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Thematische Bibliographien / Ion current measurements / Zeitschriftenartikel

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Zeitschriftenartikel zum Thema „Ion current measurements“

Autor: Grafiati

Veröffentlicht am 14. März 2023

Zuletzt aktualisiert am 31. Juli 2025

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1

ONUMA, Yoshiaki, Norihiko YOSHIKAWA, Masahiko UMETANI, and Kaszuhiro KIMURA. "Ion current measurements in turbulent diffusion flames." Transactions of the Japan Society of Mechanical Engineers Series B 52, no. 475 (1986): 1151–57. http://dx.doi.org/10.1299/kikaib.52.1151.

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2

Muzyukin, I. L., and P. S. Mikhailov. "The measurements of vacuum arc behaviour at threshold current." Journal of Physics: Conference Series 2064, no. 1 (2021): 012015. http://dx.doi.org/10.1088/1742-6596/2064/1/012015.

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Abstract The measurements of vacuum arc current parameters at the threshold current were made. The threshold currents for Cu, W, graphite cathodes were measured. It was shown that the current that vacuum arc chops with, has a statistical distribution. The vacuum arc current chopping is accompanied with significant ion current burst. The ion current of W and Cu cathodes contains intensive peaks with 30-50 ns duration. It was shown that the cathode materials that have intense peaks have a significant threshold current.

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3

Gaus, A. D., W. T. Htwe, J. A. Brand, T. J. Gay, and M. Schulz. "Energy spread and ion current measurements of several ion sources." Review of Scientific Instruments 65, no. 12 (1994): 3739–45. http://dx.doi.org/10.1063/1.1144500.

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4

Kishimoto, Yuta, Sachiko Ide, Toyohiro Naito, Yuta Nakashima, Yoshitaka Nakanishi, and Noritada Kaji. "Development of a Microfluidic Ion Current Measurement System for Single-Microplastic Detection." Journal of Robotics and Mechatronics 35, no. 5 (2023): 1193–202. http://dx.doi.org/10.20965/jrm.2023.p1193.

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Microplastics (MPs) can adsorb heavy metals and metalloids and may cause a potential health hazard. Precise measurements of their size, shape, composition, and concentration at a single-MP level are important to evaluate their potential toxicity and identify their original source. However, current single-MP analytical methods such as micro-Raman spectroscopy and scanning electron microscopy have low throughput. Therefore, in this study, we applied the ion current sensing method, which has been used for single cell analysis, to single-MP analysis and examined whether size measurement and compos

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Lazuchenkov, D. N., and N. M. Lazuchenkov. "Mathematical simulation of ionospheric plasma diagnostics by electric current measurements using an insulated probe system." Technical mechanics 2024, no. 2 (2024): 112–23. http://dx.doi.org/10.15407/itm2024.02.112.

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The goal of this work is to theoretically substantiate the possibility of determining the charged particle density in the ionospheric plasma by separately measuring the electric currents of an insulated probe system in the electron saturation region. The ionospheric plasma composition is modeled by two ion species with significantly different masses and electrons to keep the plasma quasi-neutrality. The probe system, which is electrically insulated from the spacecraft structure, consists of cylindrical electrodes: a probe and a reference electrode. The reference electrode to probe current-coll

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Rawat, Bharat Singh, S. K. Sharma, B. Choksi, V. Prahlad, and U. K. Baruah. "Measurement system for ion beam profiles using fixed parallel wires and Faraday cup array." AIP Advances 12, no. 12 (2022): 125103. http://dx.doi.org/10.1063/5.0117836.

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The radial profiles of ion current density are measured using a combination of two techniques—fixed parallel wires and a Faraday cup array—in a ring cusp ion source. These measurements are carried out for Ar+ ion beam current in the range of 20–90 mA and energy in the range of 850–1650 eV. Current density profiles near the extraction plane of the ion source are obtained by Abel inversion of the profiles of current measured using the parallel wires. In addition, the Faraday cup array provides radial profiles of ion current density at two different locations along the beam axis. A numerical mode

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Wollgarten, J. Christopher, Nikolaos Zarzalis, Fabio Turrini, and Antonio Peschiulli. "Experimental investigations of ion current in liquid-fuelled gas turbine combustors." International Journal of Spray and Combustion Dynamics 9, no. 3 (2017): 172–85. http://dx.doi.org/10.1177/1756827716688477.

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This work covers investigations of the static and dynamic behaviour of a confined, co-swirled and liquid-fuelled airblast injection system. The focus lies on the application of ion current sensors for the qualitative measurement of the heat release rate or for flame monitoring purposes in complex technical combustion processes. The ion current sensor is to operate in a feedback control loop in order to react on combustion dynamics in real time. The first part of the work analyses experimental data, which were obtained with different techniques, e.g. dynamic pressure, chemiluminescence, fine-wi

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Shepherd, A., T. Patton, A. Pimazzoni, et al. "Direct current measurements of the SPIDER beam: a comparison to existing beam diagnostics." Journal of Instrumentation 18, no. 07 (2023): C07019. http://dx.doi.org/10.1088/1748-0221/18/07/c07019.

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Abstract For negative ion beam sources there are several methods of measuring the accelerated beam current, most commonly electrical measurements at the power supply and calorimetric measurements. On SPIDER, the ITER Heating Neutral Beam full-scale beam source prototype, electrical measurements at the acceleration grid power supply (AGPS) are complemented by polarizing the diagnostic calorimeter STRIKE to provide an additional electrical measurement of the accelerated current. This is in addition to the calorimetric measurements provided by STRIKE. These diagnostics give differing measurements

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Urban, Radovan, Robert A. Wolkow, and Jason L. Pitters. "Evaluating Angular Ion Current Density for Atomically Defined Nanotips." Microscopy and Microanalysis 20, no. 5 (2014): 1514–20. http://dx.doi.org/10.1017/s1431927614001627.

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AbstractIn this paper we investigate methods to characterize angular current density from atomically defined gas field ion sources. We show that the ion beam emitted from a single apex atom is described by a two-dimensional Gaussian profile. Owing to the Gaussian shape of the beam and the requirement to collect the majority of the ion current, fixed apertures have inhomogeneous illumination. Therefore, angular current density measurements through a fixed aperture record averaged angular current density. This makes comparison of data difficult as averaged angular current density depends on aper

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Soares, Rudi, Alexander Bessman, Oskar Wallmark, Göran Lindbergh, and Pontus Svens. "An Experimental Setup with Alternating Current Capability for Evaluating Large Lithium-Ion Battery Cells." Batteries 4, no. 3 (2018): 38. http://dx.doi.org/10.3390/batteries4030038.

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In the majority of applications using lithium-ion batteries, batteries are exposed to some harmonic content apart from the main charging/discharging current. The understanding of the effects that alternating currents have on batteries requires specific characterization methods and accurate measurement equipment. The lack of commercial battery testers with high alternating current capability simultaneously to the ability of operating at frequencies above 200 Hz, led to the design of the presented experimental setup. Additionally, the experimental setup expands the state-of-the-art of lithium-io

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Scharmann, Steffen, Konstantin Keil, Jana Zorn, et al. "Thrust measurement of an ion thruster by a force probe approach and comparison to a thrust balance." AIP Advances 12, no. 4 (2022): 045218. http://dx.doi.org/10.1063/5.0066401.

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A key parameter when characterizing the performance of an electric propulsion system is obviously its thrust. The thrust can be either determined directly using a so-called thrust balance or deduced from indirect measurements. Here, we present a comparison of thrust measurements of the same radio frequency ion thruster in the thrust range from 250 μN to 1.5 mN using three different approaches: a conventional direct measurement employing a thrust balance and two indirect measurements, one based on a force probe located stationary in the thruster’s plume in conjunction with a scan of the ion bea

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Belianinov, Alex, Songkil Kim, Cannon Buechley, Matthew Burch, Olga Ovchinnikova, and Stephen Jesse. "Ion Beam Induced Current Measurements of Solar Cells with Helium Ion Microscopy." Microscopy and Microanalysis 23, S1 (2017): 2084–85. http://dx.doi.org/10.1017/s1431927617011084.

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13

Jimbo, Kouichi, and Masashi Iima. "Negative ion current measurements with the modified JAERI probe." Review of Scientific Instruments 62, no. 3 (1991): 772–74. http://dx.doi.org/10.1063/1.1142082.

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14

Narula, H. S., and J. G. Harris. "A time-based VLSI potentiostat for ion current measurements." IEEE Sensors Journal 6, no. 2 (2006): 239–47. http://dx.doi.org/10.1109/jsen.2006.870142.

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15

Akiyama, T., R. L. Boivin, M. W. Brookman, et al. "Fast wave interferometer for ion density measurement on DIII-D." Journal of Instrumentation 17, no. 01 (2022): C01052. http://dx.doi.org/10.1088/1748-0221/17/01/c01052.

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Abstract A fast wave interferometer (FWI), which can measure ion mass density, has been developed on DIII-D for its use on future fusion reactors, as well as for the study of ion behavior in current plasma devices. The frequency of the fast waves used for the FWI is around 60 MHz, and require antennas and coaxial cables or waveguides, which, unlike traditional mirror-based optical interferometers, are less susceptible to neutron/gamma-ray radiation and are relatively immune to impurity deposition and erosion as well as alignment issues. The bulk ion density evaluated using FWI show good agreem

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16

Pirnaris, Panagiotis, and Theodoros Sarris. "Analysis of in situ measurements of electron, ion and neutral temperatures in the lower thermosphere–ionosphere." Annales Geophysicae 41, no. 2 (2023): 339–54. http://dx.doi.org/10.5194/angeo-41-339-2023.

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Abstract. Simultaneous knowledge of the temperatures of electrons, ions and neutrals is key to the understanding and quantification of energy transfer processes in planetary atmospheres. However, whereas electron and ion temperature measurements are routinely obtained from ground-based incoherent scatter radars, simultaneous measurements of electron, ion and neutral temperature measurements can only be made in situ. For the Earth's lower thermosphere–ionosphere, the only available comprehensive in situ dataset of electron, ion and neutral temperatures to date is that of the Atmosphere Explorer

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17

Uchizono, N. M., R. E. Wirz, A. L. Collins, C. Marrese-Reading, S. M. Arestie, and J. K. Ziemer. "A diagnostic for quantifying secondary species emission from electrospray devices." Review of Scientific Instruments 94, no. 2 (2023): 025008. http://dx.doi.org/10.1063/5.0117666.

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Measuring the polydisperse beam of charged species emitted by an electrospray device requires accurate measurements of current. Secondary species emission (SSE) caused by high-velocity nanodroplet or molecular ion impacts on surfaces contributes to substantial uncertainty in current measurements. SSE consists of both positive and negative species; hence, mitigating measurement uncertainty requires different considerations other than plasma diagnostic techniques. The probe and analysis methods described herein distinguish between current contributions from positive SSE, negative SSE, and primar

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Zhang, Huzhong, Detian Li, Peter Wurz, et al. "Performance of a Low Energy Ion Source with Carbon Nanotube Electron Emitters under the Influence of Various Operating Gases." Nanomaterials 10, no. 2 (2020): 354. http://dx.doi.org/10.3390/nano10020354.

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Low energy ion measurements in the vicinity of a comet have provided us with important information about the planet’s evolution. The calibration of instruments for thermal ions in the laboratory plays a crucial role when analysing data from in-situ measurements in space. A new low energy ion source based on carbon nanotube electron emitters was developed for calibrating the ion-mode of mass spectrometers or other ion detectors. The electron field emission (FE) properties of carbon nanotubes (CNTs) for H2, He, Ar, O2, and CO2 gases were tested in the experiments. H2, He, Ar, and CO2 adsorbates

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Von Reden, Karl F., Ann P. McNichol, Ann Pearson та Robert J. Schneider. "14C AMS Measurements of <100 μG Samples with a High-Current System". Radiocarbon 40, № 1 (1997): 247–53. http://dx.doi.org/10.1017/s0033822200018117.

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The NOSAMS facility at Woods Hole Oceanographic Institution has started to develop and apply techniques for measuring very small samples on a standard Tandetron accelerator mass spectrometry (AMS) system with high-current hemispherical Cs sputter ion sources. Over the past year, results on samples ranging from 7 to 160 μg C showed both the feasibility of such analyses and the present limitations on reducing the size of solid carbon samples. One of the main factors affecting the AMS results is the dependence of a number of the beam optics parameters on the extracted ion beam current. The extrac

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Lee, Y., R. A. Gough, W. B. Kunkel, et al. "Ion energy spread and current measurements of the rf-driven multicusp ion source." Review of Scientific Instruments 68, no. 3 (1997): 1398–402. http://dx.doi.org/10.1063/1.1147948.

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21

Viitanen, A. K., E. Saukko, H. Junninen, et al. "Atmospheric trace gas measurements using ion mobility spectrometer." Atmospheric Measurement Techniques Discussions 4, no. 4 (2011): 4957–90. http://dx.doi.org/10.5194/amtd-4-4957-2011.

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Abstract. Ion mobility spectrometer (IMS) was implemented to measure gas phase compounds from ambient air in order to study the suitability of the technique for on-line atmospheric measurements. The measurements took place at the SMEAR II station in Hyytiälä, Finland during spring periods on 2008 and 2009. We were able to separate several different atmosphere related ion mobility peaks form the measured ion mobility distributions. The hypothetic origins of these peaks are discussed accompanying the comparison with earlier trace gas measurements by different techniques. The potential of the IMS

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22

Kuuluvainen, H., J. Kannosto, A. Virtanen, et al. "Measuring condensation sink and ion sink of atmospheric aerosols with the electrical low pressure impactor (ELPI)." Atmospheric Chemistry and Physics Discussions 9, no. 4 (2009): 15867–89. http://dx.doi.org/10.5194/acpd-9-15867-2009.

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Abstract. We investigate the suitability of ELPI for condensation sink and ion sink measurements. The aim is to find the simple calibration factors by which the measured ELPI currents can be converted to condensation or ion sinks. The calibration is based on DMPS and ELPI measurements within the period 15–25 May 2005 at a boreal forest site in Southern Finland. The values of condensation sink and ion sink were calculated from the DMPS size distributions using their theoretical definitions. After that the values were compared to theoretical and measured ELPI current, and calibration factors wer

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23

Addabbo, Tommaso, Ada Fort, Elia Landi, et al. "Ion Current Sensor for Gas Turbine Condition Dynamical Monitoring: Modeling and Characterization." Sensors 21, no. 20 (2021): 6944. http://dx.doi.org/10.3390/s21206944.

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This paper aims to thoroughly investigate the potential of ion current measurements in the context of combustion process monitoring in gas turbines. The study is targeted at characterizing the dynamic behavior of a typical ion-current measurement system based on a spark-plug. Starting from the preliminary study published in a previous work, the authors propose a refined model of the electrode (spark plug), based on the Langmuir probe theory, that incorporates the physical surface effects and proposes an optimized design of the conditioning electronics, which exploits a low frequency AC square

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Harrison, Reid R., Ilya Kolb, Suhasa B. Kodandaramaiah, et al. "Microchip amplifier for in vitro, in vivo, and automated whole cell patch-clamp recording." Journal of Neurophysiology 113, no. 4 (2015): 1275–82. http://dx.doi.org/10.1152/jn.00629.2014.

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Patch clamping is a gold-standard electrophysiology technique that has the temporal resolution and signal-to-noise ratio capable of reporting single ion channel currents, as well as electrical activity of excitable single cells. Despite its usefulness and decades of development, the amplifiers required for patch clamping are expensive and bulky. This has limited the scalability and throughput of patch clamping for single-ion channel and single-cell analyses. In this work, we have developed a custom patch-clamp amplifier microchip that can be fabricated using standard commercial silicon process

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Lei, Chong, Michael F. Simpson, and Anil V. Virkar. "Investigation of Ion and Electron Conduction in the Mixed Ionic-Electronic Conductor- La-Sr-Co-Fe-Oxide (LSCF) Using Alternating Current (AC) and Direct Current (DC) Techniques." Journal of The Electrochemical Society 169, no. 1 (2022): 014506. http://dx.doi.org/10.1149/1945-7111/ac43d8.

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Among many mixed ionic electronic conductors (MIECs), lanthanum strontium cobalt iron oxide (LSCF) has been proven as a promising material for use as cathode in SOFCs. The ion and electron conduction in LSCF need to be studied separately. To measure the ionic conductivity of LSCF, YSZ disks were applied to block the electronic current, and multilayered samples were made with YSZ disks in series with an LSCF disk. Both AC and DC techniques were used for the measurements. An LSCF(porous)/LSCF(dense)/LSCF(porous) bar-shaped sample was made to measure the electronic conductivity of LSCF. DC techni

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BADZIAK, J., S. GŁOWACZ, S. JABŁOŃSKI, P. PARYS, J. WOŁOWSKI, and H. HORA. "Laser-driven generation of high-current ion beams using skin-layer ponderomotive acceleration." Laser and Particle Beams 23, no. 4 (2005): 401–9. http://dx.doi.org/10.1017/s0263034605050573.

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Basic properties of generation of high-current ion beams using the skin-layer ponderomotive acceleration (S-LPA) mechanism, induced by a short laser pulse interacting with a solid target are studied. Simplified scaling laws for the ion energies, the ion current densities, the ion beam intensities, and the efficiency of ions' production are derived for the cases of subrelativistic and relativistic laser-plasma interactions. The results of the time-of-flight measurements performed for both backward-accelerated ion beams from a massive target and forward-accelerated beams from a thin foil target

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de Planque, Maurits R. R. "Lipid bilayer platforms for parallel ion channel recordings." Japanese Journal of Applied Physics 61, SC (2022): SC0804. http://dx.doi.org/10.35848/1347-4065/ac4f7a.

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Abstract The ion flow through channel proteins embedded in a lipid bilayer membrane can be recorded as an electrical current, enabling biophysical characterization and pharmacological drug screening at a single-channel level. These measurements are challenging because the self-assembled bilayers are fragile and the currents are in the pA–nA range. This concise review introduces the bilayer recording methodology, with an emphasis on the requirements for full electrophysiology assays. The self-assembled lipid bilayer, formed in a ∼100 μm diameter aperture in between two aqueous chambers, is crit

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Clerici, Davide, Francesca Pistorio, and Aurelio Somà. "Lithium-Ion Battery Diagnostics with Mechanical Measurements." ECS Meeting Abstracts MA2025-01, no. 5 (2025): 643. https://doi.org/10.1149/ma2025-015643mtgabs.

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During operation, lithium-ion batteries experience a mechanical deformation due to the strain induced by the electrochemical processes, involving the interaction of lithium ions with the crystal structure of the active material of the electrodes. Such deformation originating at the atomic scale has an impact on the macroscopic structural deformation of the battery [1], [2]. Measurements of this macroscopic deformation can be used to diagnose battery states, such as degradation mechanisms and state of health, and to improve state of charge estimation. This approach is enabled by the strong corr

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Lu, Li, Qinglong Yu, Shuai Jia, Zhong Xie, Jian Lan, and Yuan Chang. "Simulation of Dynamic Evolution of Ring Current Ion Flux by a Lunar Base Energetic Neutral Atom (ENA) Imaging." Astronomy 2, no. 3 (2023): 153–64. http://dx.doi.org/10.3390/astronomy2030011.

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The distribution of energetic ion flux in the ring current region, such as a meteorological cumulonimbus cloud, stores up the particle energy for a geomagnetic substorm. It is helpful to study the geomagnetic substorm mechanism by using a lunar base ENA imaging simulation of the dynamic evolution of the ring current, and establishing the corresponding relationship between key node events of the substorm. Based on the previous observation experience and our simulation results of the dynamic evolution of the ring current, we propose a macroscopic model of substorms related to the dynamic evoluti

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Allen, N. R., D. A. Ennis, S. L. Allen, et al. "Implementation of coherence imaging spectroscopy for ion flow measurements in the Compact Toroidal Hybrid experiment." Journal of Instrumentation 18, no. 06 (2023): P06030. http://dx.doi.org/10.1088/1748-0221/18/06/p06030.

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Abstract A new coherence imaging spectroscopy (CIS) system has been characterized and validated for measurements of impurity ion velocity in the Compact Toroidal Hybrid (CTH) experiment. CIS is an interferometric technique providing very high spatial resolution of line-integrated ion flows; however, these measurements are highly sensitive to environmental factors such as temperature fluctuations. A compact interferometer design housed in a thermally regulated environment yields CIS measurement variations due to thermal fluctuations of 0.25 km/s. CIS measurements of He+ flows in the outer regio

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Séran, E. "Reconstruction of the ion plasma parameters from the current measurements: mathematical tool." Annales Geophysicae 21, no. 5 (2003): 1159–66. http://dx.doi.org/10.5194/angeo-21-1159-2003.

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Abstract. Instrument d’Analyse du Plasma (IAP) is one of the instruments of the newly prepared ionospheric mission Demeter. This analyser was developed to measure flows of thermal ions at the altitude of ~ 750 km and consists of two parts: (i) retarding potential analyser (APR), which is utilised to measure the energy distribution of the ion plasma along the sensor look direction, and (ii) velocity direction analyser (ADV), which is used to measure the arrival angle of the ion flow with respect to the analyser axis. The necessity to obtain quick and precise estimates of the ion plasma paramete

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Xie, He, Tomonori Saito, and Michael A. Hickner. "Zeta Potential of Ion-Conductive Membranes by Streaming Current Measurements." Langmuir 27, no. 8 (2011): 4721–27. http://dx.doi.org/10.1021/la105120f.

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33

Michaux, Etienne, and Stéphane Mazouffre. "Time-of-Flight Measurements in the Jet of a High-Current Vacuum Arc Thruster." Aerospace 10, no. 12 (2023): 1011. http://dx.doi.org/10.3390/aerospace10121011.

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Measurements of ion speed in the plume of a pulsed high-current vacuum arc thruster were performed by means of electrostatic probes. The probes were designed to provide direct speed measurements with minimum disturbance on the plasma jet. Typical mean values of vi for Ti and Cu cathodes are determined at different locations downstream of the electrodes, in the far field region. From one VAT discharge to another, the mean ion speed strongly varies which leads to a large statistical dispersion. Single-shot analysis allows the observation of the plume anisotropy and its high divergence as well as

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MacCoss, Michael J., Michael J. Toth, and Dwight E. Matthews. "Evaluation and Optimization of Ion-Current Ratio Measurements by Selected-Ion-Monitoring Mass Spectrometry." Analytical Chemistry 73, no. 13 (2001): 2976–84. http://dx.doi.org/10.1021/ac010041t.

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35

Sikora, Jarosław, Bartosz Kania, and Janusz Mroczka. "Thermionic Electron Beam Current and Accelerating Voltage Controller for Gas Ion Sources." Sensors 21, no. 8 (2021): 2878. http://dx.doi.org/10.3390/s21082878.

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Thermionic emission sources are key components of electron impact gas ion sources used in measuring instruments, such as mass spectrometers, ionization gauges, and apparatus for ionization cross-section measurements. The repeatability of the measurements taken with such instruments depends on the stability of the ion current, which is a function, among other things, of the electron beam current and electron accelerating voltage. In this paper, a laboratory thermionic electron beam current and accelerating voltage controller is presented, based on digital algorithm implementation. The average v

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Zanáška, Michal, Daniel Lundin, Nils Brenning, et al. "Dynamics of bipolar HiPIMS discharges by plasma potential probe measurements." Plasma Sources Science and Technology 31, no. 2 (2022): 025007. http://dx.doi.org/10.1088/1361-6595/ac4b65.

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Abstract The plasma potential at a typical substrate position is studied during the positive pulse of a bipolar high-power impulse magnetron sputtering (bipolar HiPIMS) discharge with a Cu target. The goal of the study is to identify suitable conditions for achieving ion acceleration independent on substrate grounding. We find that the time-evolution of the plasma potential during the positive pulse can be separated into several distinct phases, which are highly dependent on the discharge conditions. This includes exploring the influence of the working gas pressure (0.3–2 Pa), HiPIMS peak curr

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Sobolewski, M. A. "Measuring the ion current in electrical discharges using radio-frequency current and voltage measurements." Applied Physics Letters 72, no. 10 (1998): 1146–48. http://dx.doi.org/10.1063/1.121032.

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Kuuluvainen, H., J. Kannosto, A. Virtanen, et al. "Technical Note: Measuring condensation sink and ion sink of atmospheric aerosols with the electrical low pressure impactor (ELPI)." Atmospheric Chemistry and Physics 10, no. 3 (2010): 1361–68. http://dx.doi.org/10.5194/acp-10-1361-2010.

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Abstract. We investigate the suitability of ELPI for condensation sink and ion sink measurements. The aim is to find the simple calibration factors by which the measured ELPI current can be converted to condensation or ion sinks. The calibration is based on DMPS and ELPI measurements within the period 15–25 May 2005 at a boreal forest site in Southern Finland. The values of condensation sink and ion sink were calculated from the DMPS size distributions using their theoretical definitions. After that the values were compared to theoretical and measured ELPI current, and calibration factors were

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Artemyev, A. V., A. A. Petrukovich, L. M. Zelenyi, et al. "Comparison of multi-point measurements of current sheet structure and analytical models." Annales Geophysicae 26, no. 9 (2008): 2749–58. http://dx.doi.org/10.5194/angeo-26-2749-2008.

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Abstract. Current density profiles of 22 thin current sheets, crossed by four Cluster spacecraft in the magnetotail are compared with the self-consistent model of anisotropic 1-D equilibrium, including several species of quasi-adiabatic (transient) ions and drifting electrons. In order to examine ion-scale features of the current density profile Cluster data from the 2001 and 2004 tail seasons were used when the spacecraft separation was about 2000 and 1000 km, respectively, while electron-scale features are studied using Cluster data from the 2003 season , when the spacecraft separation was a

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Meyer, Lydia, Ryan Brow, Peter J. Weddle, Andrew Colclasure, and Jason Porter. "Investigating Li-Ion Depletion during Fast Charging with Operando FTIR." ECS Meeting Abstracts MA2024-01, no. 1 (2024): 172. http://dx.doi.org/10.1149/ma2024-011172mtgabs.

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Lithium-ion concentration polarization and slow ionic transport in the electrolyte phase hinder fast charging of electric vehicle batteries and can cause cell degradation. Although pseudo-2D (P2D) models capture concentration polarization phenomena during fast charging, experimental measurements of Li-ion concentration in the electrolyte phase have been limited. In this research, Fourier transform infrared spectroscopy (FTIR) and attenuated total reflection (ATR) were used to collect operando optical measurements of Li-ion concentration in a high-loading graphite/NMC811 full cell with 1.2M LiP

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Pastor, D., J. Olea, A. del Prado, et al. "Study of the electrical behavior in Intermediate Band-Si junctions." MRS Proceedings 1493 (2013): 85–90. http://dx.doi.org/10.1557/opl.2013.224.

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ABSTRACTIn this study we analyze the electrical behavior of a junction formed by an ultraheavily Ti implanted Si layer processed by a Pulsed Laser Melting (PLM) and the non implanted Si substrate. This electrical behavior exhibits an electrical decoupling effect in this bilayer that we have associated to an Intermediate Band (IB) formation in the Ti supersaturated Si layer. Time-of-flight secondary ion mass spectrometry (ToF-SIMS) measurements show a Ti depth profile with concentrations well above the theoretical limit required to the IB formation. Sheet resistance and Hall mobility measuremen

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Krause, Tessa, Daniel Nusko, Luciana Pitta Bauermann, Matthias Vetter, Marcel Schäfer, and Carlo Holly. "Methods for Quantifying Expansion in Lithium-Ion Battery Cells Resulting from Cycling: A Review." Energies 17, no. 7 (2024): 1566. http://dx.doi.org/10.3390/en17071566.

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Significant efforts are being made across academia and industry to better characterize lithium ion battery cells as reliance on the technology for applications ranging from green energy storage to electric mobility increases. The measurement of short-term and long-term volume expansion in lithium-ion battery cells is relevant for several reasons. For instance, expansion provides information about the quality and homogeneity of battery cells during charge and discharge cycles. Expansion also provides information about aging over the cell’s lifetime. Expansion measurements are useful for the eva

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Zhang, Haowei, Lili Sun, Chengli Song, et al. "Integrated solid-state wearable sweat sensor system for sodium and potassium ion concentration detection." Sensor Review 42, no. 1 (2022): 76–88. http://dx.doi.org/10.1108/sr-03-2021-0081.

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Purpose Design, fabricate and evaluate all-solid-state wearable sensor systems that can monitor ion concentrations in human sweat to provide real time health analysis and disease diagnosis capabilities. Design/methodology/approach A human health monitoring system includes disposable customized flexible electrode array and a compact signal transmission-processing electronic unit. Findings Patterned rGO (reduced-graphene oxide) layers can replace traditional metal electrodes for the fabrication of free-standing all solid film sensors to provide improved flexibility, sensitivity, selectivity, and

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Xu, Yida, Wittaya Ngeontae, Ernö Pretsch, and Eric Bakker. "Backside Calibration Chronopotentiometry: Using Current to Perform Ion Measurements by Zeroing the Transmembrane Ion Flux." Analytical Chemistry 80, no. 19 (2008): 7516–23. http://dx.doi.org/10.1021/ac800774e.

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Cipciar, D., J. Adamek, J. Horacek, J. Cavalier, and M. Hron. "Statistical properties of ion and electron temperature fluctuations in the edge of the COMPASS tokamak." Plasma Physics and Controlled Fusion 64, no. 5 (2022): 055021. http://dx.doi.org/10.1088/1361-6587/ac5a0b.

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Abstract This paper presents measurements of the plasma turbulence with an emphasis on the ion temperature fluctuations in comparison to the electron temperature and the ion saturation current fluctuations in the edge of the COMPASS tokamak. The ion temperature values are obtained by using a fast swept ball-pen probe, with temporal resolution up to 10 µs, accompanied by independent 1 µs measurements of the electron temperature and ion saturation current. The experimental results obtained for a wide range of line-averaged densities show that statistical properties of the fluctuations are in goo

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Østedgaard-Munck, David Nicolas, Jacopo Catalano, and Anders Bentien. "Direct Measurements of Electroviscous Phenomena in Nafion Membranes." Membranes 10, no. 11 (2020): 304. http://dx.doi.org/10.3390/membranes10110304.

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Investigation of electroviscous effects is of interest to technologies that exploit transport of ions through ion exchange membranes, charged capillaries, and porous media. When ions move through such media due to a hydrostatic pressure difference, they interact with the fixed charges, leading to an increased hydraulic resistance. Experimentally this is observed as an apparent increase in the viscosity of the solution. Electroviscous effects are present in all electrochemical membrane-based processes ranging from nanofiltration to fuel-cells and redox flow batteries. Direct measurements of ele

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BADZIAK, J., S. GŁOWACZ, S. JABŁOŃSKI, P. PARYS, J. WOŁOWSKI, and H. HORA. "Generation of picosecond high-density ion fluxes by skin-layer laser-plasma interaction." Laser and Particle Beams 23, no. 2 (2005): 143–47. http://dx.doi.org/10.1017/s0263034605050238.

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The possibilities of producing ultrahigh-current-density ps ion fluxes by the skin-layer interaction of a short (≤ 1ps) laser pulse with plasma were studied using two-fluid hydrodynamic simulations, and the time-of-flight measurements. Backward-emitted ion fluxes from a massive (Au) target as well as forward-emitted fluxes from various thin foil targets irradiated by a 1-ps laser pulse of intensity up to 2 × 1017W/cm2were recorded. Both the simulations and the measurements confirmed that using the short-pulse skin-layer interaction of a laser pulse with a thin pre-plasma layer in front of a so

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Bradley, M. P., and C. J. T. Steenkamp. "Time-Resolved Ion and Electron Current Measurements in Pulsed Plasma Sheaths." IEEE Transactions on Plasma Science 34, no. 4 (2006): 1156–59. http://dx.doi.org/10.1109/tps.2006.877744.

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Osswald, P. J., S. V. Erhard, A. Noel, et al. "Current density distribution in cylindrical Li-Ion cells during impedance measurements." Journal of Power Sources 314 (May 2016): 93–101. http://dx.doi.org/10.1016/j.jpowsour.2016.02.070.

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Tolstoguzov, A. B., U. Bardi, and S. P. Chenakin. "Depth profiling using secondary ion mass spectrometry and sample current measurements." Journal of Surface Investigation. X-ray, Synchrotron and Neutron Techniques 1, no. 6 (2007): 734–40. http://dx.doi.org/10.1134/s1027451007060195.

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