Relevant bibliographies by topics / He-3 detectors

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'He-3 detectors'

Author: Grafiati
Published: 4 June 2021
Last updated: 19 February 2022

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Journal articles on the topic "He-3 detectors"

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Metwally, Walid A. "Existing NaI detectors; an efficient alternative to He-3 detectors." Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 338 (November 2014): 48–51. http://dx.doi.org/10.1016/j.nimb.2014.08.001.

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Glesius, F., and T. Kniss. "He/sup 3/ neutron detectors for hostile environments." IEEE Transactions on Nuclear Science 35, no. 1 (1988): 867–71. http://dx.doi.org/10.1109/23.12849.

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Rees, Lawrence B., and J. Bart Czirr. "Optimizing moderation of He-3 neutron detectors for shielded fission sources." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 691 (November 2012): 72–80. http://dx.doi.org/10.1016/j.nima.2012.07.004.

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Manolopoulou, M., M. Fragopoulou, S. Stoulos, S. Petalas, and M. Zamani. "Monte Carlo calculation of the response of He-3 counter with Geant4." HNPS Proceedings 14 (December 5, 2019): 161. http://dx.doi.org/10.12681/hnps.2266.

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Monte Carlo calculations with Geant4 were performed to calculate the response of He-3 proportional counters for neutrons of the energy region of 230 keV – 7 MeV. The results are compared with experimental data obtained by irradiation of the detectors with monoenergetic neutron beams produced by 7Li(p,n)7Be and 2H(d,n)3He reactions in the Tandem accelerator, NSCR Demokritos Athens.
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Jia, Tao, Chao Wan, Limin Zhao, et al. "Temperature dependence of niobium superconducting nanowire single-photon detectors in He-3 cryocooler." Chinese Science Bulletin 59, no. 28 (2014): 3549–53. http://dx.doi.org/10.1007/s11434-014-0538-5.

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ALBERTINI, G., V. CALBUCCI, F. CARDONE, et al. "EVIDENCE OF ALPHA EMISSION FROM COMPRESSED STEEL BARS." International Journal of Modern Physics B 27, no. 23 (2013): 1350124. http://dx.doi.org/10.1142/s0217979213501245.

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Four cylindrical steel bars of 2 cm diameter and 20 cm height were subjected to compression cycles each of them consisting of a loading phase at fixed stress rate followed by a rapid stress release. Different compression rates were used for the same sample. The area surrounding the loaded samples was monitored in order to check whether ionizing particles were emitted. To this aim, three ZnS(Ag) detectors, a Geiger counter, and some polycarbonate CR39 detectors of alpha particles were used. An 3 He proportional detector of neutrons was also used. The whole set of results is discussed and proposed as an evidence of alpha particles emission from the bars during the compression cycles.
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Pappalardo, A., C. Vasi, and P. Finocchiaro. "Direct comparison between solid state Silicon+ 6 LiF and 3 He gas tube neutron detectors." Results in Physics 6 (2016): 12–13. http://dx.doi.org/10.1016/j.rinp.2015.11.012.

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Kashchuk, A. P., and O. V. Levitskaya. "Position-Sensitive Thermal and Cold Neutron Detectors with $$_{2}^{3}{\text{He}}$$ Gas Converter (Review)." Technical Physics 65, no. 4 (2020): 493–513. http://dx.doi.org/10.1134/s1063784220040118.

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NAKAE, L. F., G. F. CHAPLINE, A. M. GLENN, et al. "THE USE OF FAST NEUTRON DETECTION FOR MATERIALS ACCOUNTABILITY." International Journal of Modern Physics: Conference Series 27 (January 2014): 1460140. http://dx.doi.org/10.1142/s2010194514601409.

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For many years at LLNL, we have been developing time-correlated neutron detection techniques and algorithms for applications such as Arms Control, Threat Detection and Nuclear Material Assay. Many of our techniques have been developed specifically for the relatively low efficiency (a few percent) inherent in man-portable systems. Historically, thermal neutron detectors (mainly 3 He ) were used, taking advantage of the high thermal neutron interaction cross-sections, but more recently we have been investigating the use of fast neutron detection with liquid scintillators, inorganic crystals, and in the near future, pulse-shape discriminating plastics that respond over 1000 times faster (nanoseconds versus tens of microseconds) than thermal neutron detectors. Fast neutron detection offers considerable advantages, since the inherent nanosecond production timescales of fission and neutron-induced fission are preserved and measured instead of being lost in the thermalization of thermal neutron detectors. We are now applying fast neutron technology to the safeguards regime in the form of high efficiency counters. Faster detector response times and sensitivity to neutron momentum show promise in measuring, differentiating, and assaying samples that have modest to very high count rates, as well as mixed neutron sources (e.g., Pu oxide or Mixed Cm and Pu ). Here we report on measured results with our existing liquid scintillator array and promote the design of a nuclear material assay system that incorporates fast neutron detection, including the surprising result that fast liquid scintillator becomes competitive and even surpasses the precision of 3 He counters measuring correlated pairs in modest (kg) samples of plutonium.
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Ohzu, A., M. Takase, M. Haruyama, et al. "Numerical evaluation of the light transport properties of alternative He-3 neutron detectors using ceramic scintillators." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 798 (October 2015): 62–69. http://dx.doi.org/10.1016/j.nima.2015.07.020.

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Dissertations / Theses on the topic "He-3 detectors"

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Pedicini, Eowyn E. "Passive Neutron Detection in Ports for Homeland Security Applications." Thesis, 2013. http://hdl.handle.net/1969.1/149402.

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The smuggling of special nuclear material (SNM) has long been a concern. In April 2009, President Obama declared that a terrorist acquiring a nuclear weapon was the most immediate threat to global security. The Second Line of Defense (SLD) initiative was stood up by the National Nuclear Security Administration to deter, detect, and interdict illicit trafficking of nuclear and radioactive materials across international borders and maritime shipping. The SLD initiative does not provide for the detection of SNM being carried on small, personal watercraft. Previous work examined the possibility of using active neutron detectors to induce fission in SNM and detect the response. This thesis examines the possibility of detecting SNM using passive 3He neutron detectors. Monte Carlo N-Particle (MCNP) simulations were run to determine the best detector configuration. Detecting sources at increasing depths, detecting moving sources and the effects of waves were also simulated in MCNP. Comparisons with experimental measurements showed that detectors parallel to the surface of water were best at detecting neutron sources below the surface. Additionally, stacking detectors and placing a cadmium sheet between the polyethylene blocks resulted in a greater ability to determine the height of a source by taking the ratio of count rates in the lower and upper detectors. Using this configuration, a source of strength 3.39 x 10^5 n/s could be detected to a depth of 12.00 in below the water surface. Count rates in the presence of waves did not average out to count rates taken above a flat plane of water. Detectors closer to the water performed worse than above a flat plane while detectors placed higher recorded more counts than above a flat plane. Moving sources were also simulated; sources under water, 3.00 ft from the detectors, and moving at 5.8 kts could be detected above background.
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Book chapters on the topic "He-3 detectors"

1

Stöckel, Klaus. "Germanium Detector Based Study of the $$^{2}$$ H(p, $$\gamma $$ ) $$^{3}$$ He Cross Section at LUNA." In Springer Proceedings in Physics. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-13876-9_83.

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Conference papers on the topic "He-3 detectors"

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"Diamond Neutron Detectors as He-3 alternative." In 2013 IEEE Nuclear Science Symposium and Medical Imaging Conference (2013 NSS/MIC). IEEE, 2013. http://dx.doi.org/10.1109/nssmic.2013.6829582.

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Seabury, E. H., and D. L. Chichester. "A study of 3He detectors for active interrogation." In 2009 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC 2009). IEEE, 2009. http://dx.doi.org/10.1109/nssmic.2009.5402101.

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Lacy, Jeffrey L., Athanasios Athanasiades, Christopher S. Martin, Liang Sun, and Gerson J. Vazquez-Flores. "Replacement of 3He in constrained-volume homeland security detectors." In 2011 IEEE Nuclear Science Symposium and Medical Imaging Conference (2011 NSS/MIC). IEEE, 2011. http://dx.doi.org/10.1109/nssmic.2011.6154509.

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Lacy, J. L., A. Athanasiades, Liang Sun, C. S. Martin, and G. J. Vazquez-Flores. "Boron coated straw detectors as a replacement for 3He." In 2009 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC 2009). IEEE, 2009. http://dx.doi.org/10.1109/nssmic.2009.5401846.

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King, Michael J., Tsahi Gozani, Donald B. Hilliard, Marianne E. Hamm, and Robert W. Hamm. "Development of [sup 10]B-Based [sup 3]He Replacement Neutron Detectors." In APPLICATIONS OF NUCLEAR TECHNIQUES: Eleventh International Conference. AIP, 2011. http://dx.doi.org/10.1063/1.3665317.

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"Optical guide property of alternative He-3 neutron detectors using solid scintillators for nuclear safeguards." In 2013 IEEE Nuclear Science Symposium and Medical Imaging Conference (2013 NSS/MIC). IEEE, 2013. http://dx.doi.org/10.1109/nssmic.2013.6829640.

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Ohzu, A., M. Takase, N. Kurata, et al. "Evaluation of light transport property in alternative He-3 neutron detectors using ceramic scintillators by a ray-tracing simulation." In 2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC). IEEE, 2014. http://dx.doi.org/10.1109/nssmic.2014.7431175.

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Zhang, Feng, Fei Qiu, Qunwei Fang, et al. "AN ACCURATELY DETERMINING POROSITY METHOD FROM PULSED-NEUTRON ELEMENT LOGGING IN UNCONVENTIONAL RESERVOIRS." In 2021 SPWLA 62nd Annual Logging Symposium Online. Society of Petrophysicists and Well Log Analysts, 2021. http://dx.doi.org/10.30632/spwla-2021-0115.

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Unconventional reservoirs have low porosity and complex mineral composition containing quartz, feldspar, calcite, dolomite, pyrite and kerogen, which may seriously reduce the accuracy of the porosity measurement. The multi-detector pulsed neutron logging technique was already used for determining porosity through the combination of inelastic and capture gamma ray information in different spacing. In this paper, the new parameter, which is characterized by thermal neutron count ratio and lithology factor based on element content, is proposed to determine porosity from the three-detector pulsed neutron element logging in unconventional reservoir. To evaluate mineral composition, lithology, and gas/oil/water saturation in unconventional reservoir, a new multi-detector pulsed neutron logging tool was put out. The instrument consists of two He-3 thermal neutron detectors and a LaBr3 gamma detector. Therefore, the combination of thermal neutron count ratio between near detector and long detector with lithology factor of element content can measure neutron porosity and eliminate the influence of complex lithology. Based on some calibration pit data measured in laboratory, as well as the numerical simulation method, the influences of different lithological characters and mineral types on the neutron count ratio were studied. Meanwhile, large numbers of stratigraphic models with different lithological characters and different mineral compositions were established using Monte Carlo simulation method, and the content of silicon, calcium, hydrogen, oxygen, magnesium, aluminum and iron under different stratigraphic conditions was determined by the spectral element solution. A regression analysis was conducted to establish the relationship between the content of elements and the lithologic factor. The count ratio difference stemming from different lithological and mineral compositions was eliminated through a combination of lithological correction factor and thermal neutron count ratio. Different mineral compositions of stratigraphic simulation models were set up for verification. The absolute error of porosity measurement was less than 1.0p.u. in the formations with porosity less than 15p.u., which verified the accuracy of this method for neutron porosity evaluation in complex lithological characters formations. Two field examples were processed by this new parameter which in combination of thermal neutron count ratio and formation elements content information from the three-detector pulsed neutron instrument, which indicated a good accuracy for unconventional oil and gas reservoir evaluation.
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Lacy, Jeffrey L., Athanasios Athanasiades, Christopher S. Martin, Liang Sun, and Gerson J. Vazquez-Flores. "Straw-based Portal Monitor 3He replacement detector with expanded capabilities." In 2011 IEEE Nuclear Science Symposium and Medical Imaging Conference (2011 NSS/MIC). IEEE, 2011. http://dx.doi.org/10.1109/nssmic.2011.6152486.

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Makino, S., A. Sumita, T. Onodera, Y. Tanaka, N. Hikida, and K. Ishizawa. "Development of high-counting-rate measurement system for 3He position sensitive detector." In 2008 IEEE Nuclear Science Symposium and Medical Imaging conference (2008 NSS/MIC). IEEE, 2008. http://dx.doi.org/10.1109/nssmic.2008.4774547.

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