Academic literature on the topic 'THz emission sources'

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Journal articles on the topic "THz emission sources"

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Andronov, A. A., A. V. Ikonnikov, K. V. Maremianin, et al. "THz stimulated emission from simple superlattice in positive differential conductivity region." Физика и техника полупроводников 52, no. 4 (2018): 463. http://dx.doi.org/10.21883/ftp.2018.04.45812.01.

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AbstractNarrow band emissions at 2.6–2.8 THz are observed out of liquid helium cooled 1 mm disk chips prepared of a wafer with the very low n type doped weak barrier GaAs–GaAlAs superlattice of 1000 periods. The emissions are at about 8.0–18.0 V pulsed voltage applied to the chips in region of the chips positive DC differential conductivity that guaranties absence of inhomogeneous electric field domains in the chips. The emission frequency bands are estimated with a cyclotron resonance filter; the measurements show that the band width is of about that of the THz quantum cascade laser. By using
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Wang, Maorong, Yifan Zhang, Leilei Guo, Mengqi Lv, Peng Wang, and Xia Wang. "Spintronics Based Terahertz Sources." Crystals 12, no. 11 (2022): 1661. http://dx.doi.org/10.3390/cryst12111661.

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Terahertz (THz) sources, covering a range from about 0.1 to 10 THz, are key devices for applying terahertz technology. Spintronics-based THz sources, with the advantages of low cost, ultra-broadband, high efficiency, and tunable polarization, have attracted a great deal of attention recently. This paper reviews the emission mechanism, experimental implementation, performance optimization, manipulation, and applications of spintronic THz sources. The recent advances and existing problems in spintronic THz sources are fully present and discussed. This review is expected to be an introduction of
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Hu, Qing. "Generation of Terahertz Emission Based on Intersubband Transitions." International Journal of High Speed Electronics and Systems 12, no. 04 (2002): 995–1024. http://dx.doi.org/10.1142/s0129156402001897.

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In this chapter, we present our work on the development of coherent THz sources based on intersubband transition in quantum-well structures. The main focus is on electrically pumped or quantum-cascade structures, which have been quite successful in generating coherent radiation at mid-infrared frequencies. Relevant issues, such as various depopulation intersubband scattering rates, the role of complex phonon spectra, and coherent vs. incoherent tunneling are discussed in details. Optically pumped sources, including optical parametric amplifiers, and both intersubband and interband pumped THz e
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Wang, Suyun. "Terahertz Emission Modeling of Lunar Regolith." Remote Sensing 16, no. 21 (2024): 4037. http://dx.doi.org/10.3390/rs16214037.

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We investigate the terahertz (THz) scattering and emission properties of lunar regolith by modeling it as a random medium with rough top and bottom boundaries and a host medium situated beneath. The total scattering and emission arise from three sources: the rough boundaries, the volume, and the interactions between the boundaries and the volume. To account for these sources, we model their respective phase matrices and apply the matrix doubling approach to couple these phase matrices to compute the total emission. The model is then used to explore insights into lunar regolith scattering and e
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Minkevičius, Linas, Liang Qi, Agnieszka Siemion, et al. "Titanium-Based Microbolometers: Control of Spatial Profile of Terahertz Emission in Weak Power Sources." Applied Sciences 10, no. 10 (2020): 3400. http://dx.doi.org/10.3390/app10103400.

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Terahertz (THz) imaging and spectroscopy set-ups require fine optical alignment or precise control of spatial mode profile. We demonstrate universal, convenient and easy-to-use imaging—resonant and broadband antenna coupled ultrasensitive titanium-based—dedicated to accurately adjust and control spatial mode profiles without additional focusing optical components of weak power THz sources. Versatile operation of the devices is shown using different kinds of THz—electronic multiplier sources, optical THz mixer-based frequency domain and femtosecond optoelectronic THz time-domain spectrometers a
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Chen, Yuxuan, Yuhang He, Liyuan Liu, Zhen Tian, Jianming Dai, and Xi-Cheng Zhang. "Backward THz Emission from Two-Color Laser Field-Induced Air Plasma Filament." Sensors 23, no. 10 (2023): 4630. http://dx.doi.org/10.3390/s23104630.

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Two-color laser field-induced plasma filaments are efficient broadband terahertz (THz) sources with intense THz waves emitted mainly in the forward direction, and they have been investigated intensively. However, investigations on the backward emission from such THz sources are rather rare. In this paper, we theoretically and experimentally investigate the backward THz wave radiation from a two-color laser field-induced plasma filament. In theory, a linear dipole array model predicts that the proportion of the backward emitted THz wave decreases with the length of the plasma filament. In our e
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Huang, Hsin-hui, Takeshi Nagashima, Wei-hung Hsu, Saulius Juodkazis, and Koji Hatanaka. "Dual THz Wave and X-ray Generation from a Water Film under Femtosecond Laser Excitation." Nanomaterials 8, no. 7 (2018): 523. http://dx.doi.org/10.3390/nano8070523.

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Simultaneous emission of the THz wave and hard X-ray from thin water free-flow was induced by the irradiation of tightly-focused femtosecond laser pulses (35 fs, 800 nm, 500 Hz) in air. Intensity measurements of the THz wave and X-ray were carried out at the same time with time-domain spectroscopy (TDS) based on electro-optic sampling with a ZnTe(110) crystal and a Geiger counter, respectively. Intensity profiles of the THz wave and X-ray emission as a function of the solution flow position along the incident laser axis at the laser focus show that the profile width of the THz wave is broader
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Hawecker, J., E. Rongione, A. Markou, et al. "Spintronic THz emitters based on transition metals and semi-metals/Pt multilayers." Applied Physics Letters 120, no. 12 (2022): 122406. http://dx.doi.org/10.1063/5.0079955.

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Spintronic terahertz (THz) emitters based on the inverse spin Hall effect in ferromagnetic/heavy metal (FM/HM) heterostructures have become important sources for THz pulse generation. The design, materials, and control of these interfaces at the nanometer level have become vital to engineer their THz emission properties. In this work, we present studies of the optimization of such structures through a multi-pronged approach, taking advantage of material and interface engineering to enhance THz spintronic emission. This includes the application of multi-stacks of HM/FM junctions and their appli
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Lange, Simon Jappe, Matthias C. Hoffmann, and Peter Uhd Jepsen. "Lightwave-driven electron emission for polarity-sensitive terahertz beam profiling." APL Photonics 8, no. 1 (2023): 016105. http://dx.doi.org/10.1063/5.0125947.

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The full exploitation of advanced light sources in the terahertz (THz) frequency range requires versatile experimental tools to fully characterize the spatial, temporal, and spectral shapes of the THz electric field. Several techniques for passive THz beam profiling exist that offer information about the temporally integrated intensity. Thus, any information about the electric field itself is lost. Here, we show that a UV–visible light emission produced via a lightwave-driven field emission from single-layer metasurfaces can be used to visualize the peak electric field distribution of THz beam
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Consolino, Luigi, Malik Nafa, Michele De Regis, et al. "Direct Observation of Terahertz Frequency Comb Generation in Difference-Frequency Quantum Cascade Lasers." Applied Sciences 11, no. 4 (2021): 1416. http://dx.doi.org/10.3390/app11041416.

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Terahertz quantum cascade laser sources based on intra-cavity difference frequency generation from mid-IR devices are an important asset for applications in rotational molecular spectroscopy and sensing, being the only electrically pumped device able to operate in the 0.6–6 THz range without the need of bulky and expensive liquid helium cooling. Here we present comb operation obtained by intra-cavity mixing of a distributed feedback laser at λ = 6.5 μm and a Fabry–Pérot device at around λ = 6.9 μm. The resulting ultra-broadband THz emission extends from 1.8 to 3.3 THz, with a total output powe
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Dissertations / Theses on the topic "THz emission sources"

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Abdul, Hadi Zeinab. "Terahertz emission spectroscopy of multiferroic bismuth ferrite : insights into ultrafast currents and phonon dynamics." Electronic Thesis or Diss., Le Mans, 2024. http://www.theses.fr/2024LEMA1030.

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La technologie térahertz (THz) a suscité un intérêt significatif dans la communauté scientifique en raison de sa position unique dans le spectre électromagnétique, complétant le gap entre les régions des micro-ondes et de l'infrarouge. Cette radiation est non ionisante et peut pénétrer divers matériaux sans les endommager, ce qui la rend très attirante pour de nombreuses applications potentielles. Les avancées récentes dans la technologie des lasers ultra-rapides ont élargi l'exploration du rayonnement THz à un large éventail de technologies passionnantes. Elle est désormais utilisée dans des
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Ayoub, Anas. "Sources laser ultrarapides performantes dans le moyen IR et le Tz." Thesis, Normandie, 2020. http://www.theses.fr/2020NORMR044.

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La sonde atomique tomographique est un instrument d’analyse de la matière à trois dimensions avec une résolution atomique. Cet instrument s’appuie sur l’effet de champ électrique généré à l’extrémité d’un échantillon taillé sous la forme d’une aiguille nanométrique pour faire évaporer les atomes de surface qui sont collectés par un détecteur à deux dimensions. La mesure du temps de vol des ions dont l’évaporation est déclenchée par une impulsion électrique ou optique permettent de remonter à la composition chimique en plus de la localisation 3D des atomes. Dans les sondes atomiques actuelles,
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Copperwheat, C. M. "The optical emission from ultraluminous X-ray sources." Thesis, University College London (University of London), 2007. http://discovery.ucl.ac.uk/1445395/.

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Ultraluminous X-ray sources (ULXs) are point-like, non-nuclear sources which exceed the Eddington luminosity for a stellar mass black hole (BH). The emission from these sources might be beamed or super-Eddington, but it has also been pro posed that the compact object in these sources are intermediate mass BHs (IMBHs), which fit in the mass range between the two known populations of BH in the galaxy. The existence of IMBHs is under intense debate, and study of the X-ray data has been unable to resolve this issue. This thesis describes a model I have constructed in order to examine the optical/I
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Xiu, Meng. "Evaluating the emission of air pollutants from different sources." Thesis, Queensland University of Technology, 2022. https://eprints.qut.edu.au/235386/1/Meng%2BXiu%2BThesis%284%29.pdf.

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This thesis is an evaluative study of air pollution emissions from different sources in Australia and overseas. It investigates indoor and outdoor sources, including indoor combustion, electric equipment, asphalt pavement, forest fires and vehicular traffic. Based on evaluating sources, a simple practical method is proposed to identify pollution sources. This research has important scientific implications and potential for future practical applications, given the paucity of quantitative air quality studies available for pollution control.
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Domański, Grzegorz. "The contribution of different sources to the total CO2 emission from soils /." Stuttgart : Inst. für Bodenkunde und Standortslehre, 2003. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=012802754&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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Lohmann, Rainer. "Studies on the atmospheric sources, fate and behaviour of dioxins and furans." Thesis, Lancaster University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322093.

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Holt, Joanna. "An observational study of the emission line systems in compact radio sources." Thesis, University of Sheffield, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.419256.

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Hunter, Gillian C. "The behaviour of plumes from point sources in stratified flows." Thesis, Open University, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.315334.

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Ursini, Francesco. "Constraining the high energy emission sources in the environment of supermassive black holes." Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAY062/document.

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Des trous noirs supermassifs de plusieurs centaines de millions de masses solaires résident au centre de la plupart des galaxies massives. Dans 90% des cas, ces trous noirs sont dans état quiescent, très peu lumineux. Cependant, dans les 10% restant, des processus extrêmement violents sont observés, avec la libération d'énorme quantités d'énergie no- tamment en UV, X et gamma. On observe aussi parfois des jets puissants de matière pouvant s'étendre sur plusieurs centaines de kpc. Le coeur de ces galaxies sont appelés Noyaux Actifs de Galaxie (NAG). Ce sont parmis les objets les plus lumineux d
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Falcetelli, Francesco. "Modelling of Pencil-Lead Break Acoustic Emission Sources using the Time Reversal Technique." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/16554/.

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In Acoustic Emissions (AE), Hsu-Nielsen Pencil-Lead Breaks (PLB) are used to generate sound waves enabling the characterization of acoustic wave speed in complex structures. The broadband signal of a PLB represents a repeatable emission, which can be applied at different regions of the structure, and therefore can be used to calibrate the localization algorithms of the AE system. In recent years, the use of Finite Element Method (FEM) has flourished for modelling acoustic Lamb wave propagation, which is present in thin plate-like structures. The primary challenge faced by the AE community is t
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Books on the topic "THz emission sources"

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California Environmental Protection Agency. Air Resources Board. Stationary Source Division., California Environmental Protection Agency. Air Resources Board. Mobile Source Division., and California Environmental Protection Agency. Air Resources Board., eds. Mobile source emission reduction credits: Guidelines for the generation and use of mobile source emission reduction credits. State of California, California Environmental Protection Agency, Air Resources Board, 1993.

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F, Jones B., and United States. National Aeronautics and Space Administration., eds. Optical spectroscopy of IRAS sources with the infrared emission bands. National Aeronautics and Space Administration, 1987.

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United States. Environmental Protection Agency. Office of Air Quality Planning and Standards. Technical Support Division and Atmospheric Research and Exposure Assessment Laboratory (U.S.). Quality Assurance Division, eds. Protocol for the field validation of emission concentrations from stationary sources. Technical Support Division, Office of Air Quality Planning and Standards and Quality Assurance Division, Atmospheric Research and Exposure Assessment Laboratory, U.S. Environmental Protection Agency, 1991.

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Daywitt, William C. 10-60 GHz G/T measurements using the sun as a source: A preliminary study. National Bureau of Standards, Dept. of Commerce, 1986.

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Daywitt, William C. 10-60 GHz G/T measurements using the sun as a source: A preliminary study. National Bureau of Standards, Dept. of Commerce, 1986.

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Daywitt, William C. 10-60 GHz G/T measurements using the sun as a source: A preliminary study. National Bureau of Standards, Dept. of Commerce, 1986.

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Daywitt, William C. 10-60 GHz G/T measurements using the sun as a source: A preliminary study. National Bureau of Standards, Dept. of Commerce, 1986.

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Kananaskis Centre for Environmental Research. Results of the emission source surveys: Emission inventory of sulphur oxides and nitrogen oxides in Alberta. s.n, 1987.

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Anuradha, Koratkar, and United States. National Aeronautics and Space Administration., eds. The nature of the energy source in LINERs. National Aeronautics and Space Administration, 1996.

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International Vacuum Electron Sources Conference (5th 2004 Beijing, China). IVESC2004: The 5th International Vacuum Electron Sources Conference : proceedings : September 6-10, 2004, the Media Center Hotel, Beijing, China. IEEE, 2004.

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Book chapters on the topic "THz emission sources"

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Zaman, M., K. Kleineidam, L. Bakken, et al. "Methane Production in Ruminant Animals." In Measuring Emission of Agricultural Greenhouse Gases and Developing Mitigation Options using Nuclear and Related Techniques. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-55396-8_6.

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AbstractAgriculture is a significant source of GHGsglobally and ruminant livestock animals are one of the largest contributors to these emissions, responsible for an estimated 14% of GHGs (CH4and N2O combined) worldwide. A large portion of GHG fluxes from agricultural activities is related to CH4 emissions from ruminants. Both direct and indirect methods are available. Direct methods include enclosure techniques, artificial (e.g. SF6) or natural (e.g. CO2) tracer techniques, and micrometeorological methods using open-path lasers. Under the indirect methods, emission mechanisms are understood,
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Horváth, Ján, Janka Szemesová, and Lenka Zetochová. "Sustainable Transport Roadmap to Support Sustainable Economy in the Slovak Republic." In Lecture Notes in Mobility. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-89444-2_56.

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Abstract This study underscores the increasing global commitment to address climate change and allocate emissions accurately to economic sectors. Slovakia’s innovative Air Emission Accounts methodology is pivotal in understanding emissions sources and customizing policies effectively. The transport sector, contributing significantly to GHG emissions, warrants special attention for decarbonization. Emission allocation relies on vehicle category, mileage, goods transported, and owner, providing comprehensive fleet data for each economic category. National GHG projections and proposed measures, i
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Bikam, Peter Bitta. "Technology Innovations in Green Transport." In Green Economy in the Transport Sector. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-86178-0_4.

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AbstractThe paper uses the case study of Limpopo province to discuss technology innovations in green transport in South Africa with respect to the reduction of global greenhouse emission through technology innovation. South Africa’s emission from fuel combustion is the world’s 15th largest in forms of CO emission because it contributes about 1.2% of global emissions. In a submission from the Department of Environmental Affairs (DEA) on the impact of greenhouse emissions stated that companies are required to be innovative to reduce the carbon emission levels in South Africa. Literature on road
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Zaman, M., K. Kleineidam, L. Bakken, et al. "Greenhouse Gases from Agriculture." In Measuring Emission of Agricultural Greenhouse Gases and Developing Mitigation Options using Nuclear and Related Techniques. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-55396-8_1.

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AbstractThe rapidly changing global climate due to increased emission of anthropogenic greenhouse gases (GHGs) is leading to an increased occurrence of extreme weather events such as droughts, floods, and heatwaves. The three major GHGs are carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O). The major natural sources of CO2 include ocean–atmosphere exchange, respiration of animals, soils (microbial respiration) and plants, and volcanic eruption; while the anthropogenic sources include burning of fossil fuel (coal, natural gas, and oil), deforestation, and the cultivation of land that
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Goodrick, Scott L., Leland W. Tarnay, Bret A. Anderson, et al. "Fire Behavior and Heat Release as Source Conditions for Smoke Modeling." In Wildland Fire Smoke in the United States. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-87045-4_3.

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AbstractModeling smoke dispersion from wildland fires is a complex problem. Heat and emissions are released from a fire front as well as from post-frontal combustion, and both are continuously evolving in space and time, providing an emission source that is unlike the industrial sources for which most dispersion models were originally designed. Convective motions driven by the fire’s heat release strongly couple the fire to the atmosphere, influencing the development and dynamics of the smoke plume. This chapter examines how fire events are described in the smoke modeling process and explores
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Brunetti, G., G. Setti, and A. Comastri. "On the X-Ray Emission from the Powerful Radio Galaxies." In Extragalactic Radio Sources. Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-0295-4_145.

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Papanikolaou, Apostolos, Sofia Werner, Mikael Razola, et al. "The Orcelle Project – Towards Wind-Powered Ships for Deep Sea Cargo Transport." In Lecture Notes in Mobility. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-89444-2_22.

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Abstract International regulations on greenhouse gas (GHG) emissions as well as strong market demand for zero-emission transport calls for a radical change in the shipping industry. Measures such as hull form optimization, use of alternative fuels and efficient machinery systems, new coatings, and smart routing have already improved the energy efficiency of the world fleet. However, it is far from enough. To effectively respond to the climate challenges, we must turn to emission-free energy sources. One such promising and well-proven zero-emission propulsion system for shipping is wind propuls
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Carvalho, Joel C. "On the Age of GPS Radio Sources." In Multi-Wavelength Continuum Emission of AGN. Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-010-9537-2_134.

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Röttgering, Huub. "Distant Radio Galaxies: The Strong Link between the Radio and Optical Emission." In Extragalactic Radio Sources. Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-0295-4_208.

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Bicknell, G. V., M. A. Dopita, and C. P. O’dea. "Shock Excitation of Emission Lines and the Relation to GPS Sources." In Extragalactic Radio Sources. Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-0295-4_169.

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Conference papers on the topic "THz emission sources"

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But, Dmytro B., Christophe Consejo, Frederic Teppe, Dmitry Yavorskiy, Yuri Ivonyak, and Wojciech Knap. "Cyclotron Emission From Dirac Electrons in HgCdTe Alloys For Tunable THz Sources." In 2025 International Conference on Mobile and Miniaturized Terahertz Systems (ICMMTS). IEEE, 2025. https://doi.org/10.1109/icmmts62835.2025.10926021.

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Sousa, Marco P. De, Rahul Kakodkar, Betsie M. Flores, et al. "Integrating Time-Varying Environmental Indicators into an Energy Systems Modeling and Optimization Framework for Enhanced Sustainability." In The 35th European Symposium on Computer Aided Process Engineering. PSE Press, 2025. https://doi.org/10.69997/sct.171539.

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Data-driven decision-making is crucial in the transition to a low-carbon economy, especially as global industries strive to meet stringent sustainability goals. Traditional life cycle assessments often rely on static emission factors, overlooking the dynamic nature of the energy grid. As renewable energy penetration increases, grid carbon intensity fluctuates significantly across time and regions, due to the inherent intermittency of renewable sources like wind and solar. This variability introduces discrepancies in emission estimations if time-averaged factors are applied, leading to sub-opti
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Oqbi, Manar Y., and Dhabia M. Al-Mohannadi. "Deciphering the Policy-Technology Nexus: Enabling Effective and Transparent Carbon Capture Utilization and Storage Supply Chains." In Foundations of Computer-Aided Process Design. PSE Press, 2024. http://dx.doi.org/10.69997/sct.185903.

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In response to the global imperative to address climate change, this research focuses on enhancing the transparency and efficiency of the Carbon Capture Utilization and Storage (CCUS) supply chain under carbon tax. We propose a decision-making framework that integrates the CCUS supply chain's optimization model, emphasizing carbon tax policies, with a blockchain network. Smart contracts play a pivotal role in automating the exchange and utilization of carbon emissions, enhancing the digitalization of the CCUS supply chain from source to sink. This automation facilitates seamless matching of ca
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Karthikeyan, Keerthana, Sampriti Chattopadhyay, Rahul Gandhi, Ignacio E. Grossmann, and Ana I. Torres. "Pareto optimal solutions for decarbonization of oil refineries under different electricity grid decarbonization scenarios." In The 35th European Symposium on Computer Aided Process Engineering. PSE Press, 2025. https://doi.org/10.69997/sct.102781.

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In response to global efforts to reduce carbon emissions, the oil refining sector, a major source of industrial emissions, has set ambitious decarbonization targets. This study analyzes trade-offs between minimizing CO2 emissions and costs through the use of Pareto optimal solutions. A superstructure optimization framework evaluates various technological pathways and timelines, employing a bi-criterion optimization approach using the ?-constraint method. Results show that cost-effective, higher-emission solutions often involve natural gas-based technologies with carbon capture, while expensive
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Kunkel, William M., Christopher P. Donahue, Dominic T. Altamura, et al. "Aerial Gas Mapping Lidar for Methane Emission Source Localization, Quantification, and Large-Scale Statistical Characterization." In CLEO: Applications and Technology. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/cleo_at.2024.ath1e.6.

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Bridger Photonics measures methane emissions throughout the oil and natural gas supply chain. We describe sensor operation and requirements for large-scale emission inventories, including equipment identification, emission rate quantification accuracy, detection sensitivity, and sample coverage.
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TANI, Masahiko, Masayoshi TONOUCHI, Kiyomi SAKAI, et al. "Emission Properties of YBCO-Film Photo-Switches as THz Radiation Sources." In 1996 International Conference on Solid State Devices and Materials. The Japan Society of Applied Physics, 1996. http://dx.doi.org/10.7567/ssdm.1996.d-5-5.

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Manohara, Harish, Wei Lien Dang, Peter H. Siegel, Michael Hoenk, Ali Husain, and Axel Scherer. "Field emission testing of carbon nanotubes for THz frequency vacuum microtube sources." In Micromachining and Microfabrication, edited by Danelle M. Tanner and Rajeshuni Ramesham. SPIE, 2004. http://dx.doi.org/10.1117/12.531403.

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Klimov, A. S. "THE SYNTHESIS OF BULK CERAMIC PRODUCTS USING FOREVACUUM PLASMA ELECTRON SOURCE." In Plasma emission electronics. Buryat Scientific Center of SB RAS Press, 2018. http://dx.doi.org/10.31554/978-5-7925-0524-7-2018-139-142.

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Baldanov, B. B., A. P. Semenov, and Ts V. Ranzhurov. "SURROUND THE SOURCE OF THE PLASMA JET ON THE BASIS OF LOW-VOLTAGE NONSTATIONARY DISCHARGE." In Plasma emission electronics. Buryat Scientific Center of SB RAS Press, 2018. http://dx.doi.org/10.31554/978-5-7925-0524-7-2018-92-97.

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Koval, T. V., V. I. Shin, M. S. Vorobyev, P. V. Moskvin, V. N. Devyatkov, and N. N. Koval. "CONDITIONS FOR ENSURING MINIMAL INHOMOGENEITY OF THE ELECTRON BEAM ON THE COLLECTOR IN SOURCES WITH A GRID PLASMA CATHODE." In Plasma emission electronics. Buryat Scientific Center of SB RAS Press, 2023. http://dx.doi.org/10.31554/978-5-7925-0655-8-2023-71-76.

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Reports on the topic "THz emission sources"

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Panek, Jeffrey, Adrian Huth, James McCarthy, and Alan Krol. PR-312-18208-E01 Statistical Technique for Estimating NOx Emissions from Infrequently Operated Units. Pipeline Research Council International, Inc. (PRCI), 2020. http://dx.doi.org/10.55274/r0011681.

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This white paper presents a new approach for modeling emission inputs for dispersion modeling assessments. The approach is a paradigm shift from the current practice, which requires the simulation of source emissions by including all sources operating simultaneously for every hour during the year. This longstanding overly conservative approach does not adequately represent source emissions in some cases, especially from infrequent, non-continuously operated sources.
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Chepeliev, Maksym. Development of the Air Pollution Database for the GTAP 10A Data Base. GTAP Research Memoranda, 2020. http://dx.doi.org/10.21642/gtap.rm33.

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The purpose of this note is to document data sources and steps used to develop the air pollution database for the GTAP Data Base Version 10A. Emissions for nine substances are reported in the database: black carbon (BC), carbon monoxide (CO), ammonia (NH3), non-methane volatile organic compounds (NMVOC), nitrogen oxides (NOx), organic carbon (OC), particulate matter 10 (PM10), particulate matter 2.5 (PM2.5) and sulfur dioxide (SO2). The dataset covers four reference years – 2004, 2007, 2011 and 2014. EDGAR Version 5.0 database is used as the main data source. To assist with emissions redistrib
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Chepeliev, Maksym. Development of the Non-CO2 GHG Emissions Database for the GTAP 10A Data Base. GTAP Research Memoranda, 2020. http://dx.doi.org/10.21642/gtap.rm32.

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The purpose of this note is to document data sources and steps used to develop the non-CO2 greenhouse gas (GHG) emissions database for the GTAP Data Base Version 10A. Emissions are reported for three types of non-CO2 GHGs – CH4 (methane), N2O (nitrous oxide) and the group of fluorinated gases (F-gases), and cover four reference years – 2004, 2007, 2011 and 2014. FAOSTAT dataset is used for sourcing agricultural non-CO2 emissions, EDGAR v5.0 and v4.2 databases are used to source non-agricultural emissions. Each emission flow is associated with one of the four sets of emission drivers: output by
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McGrath, Tom, Wendy Coulson, and James McCarthy. PR-312-18209-E01 Methane Emissions from Compressors in Transmission and Storage Subpart W Sources. Pipeline Research Council International, Inc. (PRCI), 2019. http://dx.doi.org/10.55274/r0011630.

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This white paper provides a step-by-step review of the methodology and data sources for development of compressor methane emission factors (EFs), and develops updated EFs based on Subpart W compressor measurement and leak survey data. The methodology is analogous to that used in a previous GRI/EPA Methane Emissions Study. In all cases, updated T and S compressor emission factors are lower than historical emission factors, and significantly lower in some cases. The updated emission factors provide a current best-estimate of T and S compressors emissions, and can be used to update emission estim
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Coulson, Wendy, Tom McGrath, and James McCarthy. PR-312-16202-R03 Methane Emissions from Transmission and Storage Subpart W Sources. Pipeline Research Council International, Inc. (PRCI), 2019. http://dx.doi.org/10.55274/r0011619.

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A 2018 PRCI report evaluated related emissions from compressor seals, isolation valves, and blowdown valves based on direct measurements required by Subpart W of the GHG Reporting Program. This report presents the methane emissions data from 2011 - 2016 for the balance of the Subpart W emission sources, including: facility leaks (other than from compressor isolation valves and blowdown valves), pneumatic controller venting, condensate tank dump valve leakage, and blowdown emissions from stations. Transmission pipeline blowdown emission reporting was added to the EPA regulation in late 2015, an
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McGrath, Panek, and McCarthy. L52356 Nomenclature for Natural Gas Transmission and Storage Greenhouse Gas Emissions. Pipeline Research Council International, Inc. (PRCI), 2012. http://dx.doi.org/10.55274/r0010015.

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A compilation of harmonized terminology and standardized nomenclature for natural gas transmission and storage (T and S) equipment and operations associated with greenhouse gas (GHG) emission sources and emission estimates. Criteria for natural gas industry (per segments in 40 CFR 98) for GHG inventories are also addressed. This living document is intended to be a detailed reference for practitioners and managers developing GHG inventories. The document's primary purpose is to support T and S facilities GHG emissions reporting for 40 CFR 98 Mandatory Greenhouse Gas Reporting�; however, informa
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McCarthy, James. PR-312-18209-E05 Compressor and Facility Leak EFs for T and S - Clarifying Different Program Approaches. Pipeline Research Council International, Inc. (PRCI), 2024. http://dx.doi.org/10.55274/r0000050.

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Emission factors are often used to estimate methane leak emissions for natural gas transmission and storage facilities, such as compressor leak EFs and station leak EFs. However, different approaches are used in the literature for grouping compressor and other facility leak data, which can cause confusion when comparing estimates from different reports or data sources. It is also important to understand these differences when selecting EFs to use for purposes such as facility or system methane inventory development for a particular company or within a particular state. This white paper discuss
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Coulson, Wendy, and James McCarthy. PR-312-16202-R02 GHG Emission Factor Development for Natural Gas Compressors. Pipeline Research Council International, Inc. (PRCI), 2018. http://dx.doi.org/10.55274/r0011488.

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The U.S. EPA Greenhouse Gas (GHG) Reporting Program (GHGRP) requires compressor stations and underground storage facilities to measure compressor vent, rod packing, and seal emissions for facilities subject to 40 CFR, Part 98, Subpart W. The objective of the project is to gather and evaluate 2011 - 2016 Subpart W compressor vent and seal methane emissions data from site measurements, and present final results of an analysis to develop methane Emission Factors (EFs) based on these data. The EFs and analysis of relative contribution from different sources can be used: (1) as alternatives to curr
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Crocker, Raju, and Yang. L51796 Document CEM Experience in Natural Gas Transmission Industry. Pipeline Research Council International, Inc. (PRCI), 1999. http://dx.doi.org/10.55274/r0010426.

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Since passage of the 1990 Clean Air Act Amendments (CAAA), continuous emission monitoring system (CEMS) vendors, manufacturers, research organizations, parametric emissions monitoring system (PEMS) vendors, consultants, and source owner/operators have been developing strategies to satisfy compliance monitoring requirements that may eventually apply to many gas turbines and engines. A variety of CEMS and PEMS approaches have been developed, and evaluated to determine overall performance and cost. In addition, a few natural gas transmission companies have been required to install and operate CEM
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Stulen. L51628 A Transient Far-Field Model of the Acoustic Emission in Buried Pipelines. Pipeline Research Council International, Inc. (PRCI), 1986. http://dx.doi.org/10.55274/r0011317.

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This report describes the development of an analytical model to generate synthetic acoustic emission (AE) propagating in a buried gas transmission pipeline in response to a source. The sources are assumed to be transient forces acting at a point in the pipe wall. The solution of the model is the set of displacements at a given location relative to the point source. These displacements are the representations of the AE waveforms.
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