Article
Instruments & Instrumentation
J. W. Brooks, E. M. Tejero, M. C. Palliwoda, M. S. McDonald
Summary: This work presents two advancements in plasma impedance probes (PIPs): a streamlined analytical model for interpreting PIP-monopole measurements and techniques for achieving =1 MHz time-resolved PIP measurements. The improved model includes measuring sheath thickness and provides a more accurate method for measuring electron density and damping. The time resolution is enhanced by using higher-frequency hardware, updated analysis algorithms, and a more rigorous approach to RF calibration.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2023)
Article
Instruments & Instrumentation
M. Simeni Simeni, A. S. Davies, A. Diallo
Summary: We demonstrate the feasibility of streaked collective Thomson scattering measurements on laser-produced tin plasmas for extreme ultraviolet lithography. A probe laser beam with a wavelength of 532 nm is used to simultaneously measure the electron plasma wave (EPW) and ion acoustic wave (IAW) spectra. Absolute photon counts for laser scattering off both waves are calculated, taking into account probe laser electron heating and bremsstrahlung background radiation effects. While a large spatiotemporal region can be probed based on the IAW feature, the low signal to noise ratio restricts the EPW measurements to only one location. We propose a portable/traveling tabletop system for practical implementation.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2023)
Article
Meteorology & Atmospheric Sciences
A. T. Evan, W. Porter, R. Clemesha, A. Kuwano, R. Frouin
Summary: This study presents observations of a dust storm that occurred in the northwestern Sonoran Desert on 22 February 2020. The study found that evaporative cooling from cold frontal orographic precipitation led to the generation of a density current, which caused dust uplift as it traveled over the desert surface. Measurements from a ceilometer located downwind of the initial dust emission event showed a well-developed density current structure, and the top of the density current cold pool exhibited Kelvin-Helmholtz instability. The study suggests that the internal circulation of a density current modifies the timing and patterns of dust emission and concentration.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2022)
Article
Physics, Fluids & Plasmas
Yuanfu Yue, Peter J. Bruggeman
Summary: Plasma driven solution electrochemistry has attracted attention for various applications, including nanomaterial synthesis. This study investigated the electron density and temperature of a negative pulsed DC discharge in helium with N-2 shielding gas using Thomson scattering spectroscopy. The results showed stable radial plasma contraction and plasma-enhanced N-2 mixing. It was also observed that the plasma enhanced N-2 mixing significantly affected the plasma morphology and electron properties. The increase in electron temperature near the anode surface suggested the presence of hot electrons and their potential role in non-equilibrium electron-driven reactions in the liquid phase.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2022)
Article
Optics
Hengyi Zheng, Fukang Yin, Tie-Jun Wang, Yaoxiang Liu, Yingxia Wei, Bin Zhu, Kainan Zhou, Yuxin Leng
Summary: The temporal evolutions of electron density and plasma diameter of 1 kHz femtosecond laser filament in air were experimentally investigated. A model based on scalar diffraction theory was proposed to extract the spatial phase shift of the probe pulse from the diffraction patterns by the laser air plasma channel. The experimental observation is in agreement with numerical simulation results by solving the rate equations of the charged particles.
CHINESE OPTICS LETTERS
(2022)
Article
Physics, Fluids & Plasmas
G. J. Boyle, M. Thevenet, J. Chappell, J. M. Garland, G. Loisch, J. Osterhoff, R. D'Arcy
Summary: A model describing the evolution of plasma temperature inside a discharge capillary device is developed, simplifying calculations by using an analytic quasistatic description and replacing typical MHD simulations with a single ordinary differential equation. The model is validated against existing simulations and shown to be accurate and reliable, providing a quick and easy tool for evaluating plasma conditions in discharge capillary devices.
Article
Instruments & Instrumentation
Y. Ohtani, R. Imazawa
Summary: This study demonstrates a three-color laser interferometer composed of three Mach-Zehnder-type, one-color laser interferometers with heterodyne detection and coaxial laser beams. The noise floor can be assessed from two sets of two-color laser interferometers, and subtracting it from the measurement value obtained with the other two-color laser interferometer can reduce the noise floor. Compared to the two sets of the two-color laser interferometers in the three-color laser interferometer, a 15% noise reduction was achieved for lasers with wavelengths of 9.25 μm, 10.59 μm, and 532 nm. A 53% reduction in 100 Hz noise was achieved, and other frequency noises were equal to or less than the smallest noise achieved by the two-color laser interferometers. The 100 Hz noise floor is caused by vibration noise due to the non-coaxiality of the three beams.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2023)
Article
Physics, Fluids & Plasmas
Shubo Li, K. M. Rabadanov, E. A. Bogdanov, A. A. Kudryavtsev, N. A. Ashurbekov, Chengxun Yuan, Zhongxiang Zhou
Summary: This study investigates the formation of the electron energy distribution function (EEDF) in argon dusty plasma at low pressure, finding that dust has little effect on EEDF. The spatial profiles of the fields should be chosen carefully when obtaining the nonlocal EEDF. Significant changes in the nonlocal EEDF at the discharge periphery are observed.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2021)
Article
Astronomy & Astrophysics
S. Usman, A. Mushtaq
Summary: The study investigates the magnetorotational instability in complex quantum plasma, considering the effect of spin magnetization. It is found that the dust mass significantly affects the dispersion and growth rate of the magnetorotational mode, while the spin magnetization force plays an important role in high-density plasmas found in white dwarfs and neutron stars. Due to the complexity of the dispersion relation, MHD assumptions are used to define the instability criteria.
ASTROPHYSICAL JOURNAL
(2021)
Article
Materials Science, Multidisciplinary
Toshio Ogawa, Shogo Namizaki, Yoshitaka Adachi, Ken Takata
Summary: This study successfully detected the microstructural evolution during tensile deformation in interstitial-free (IF) steel using in-situ electrical resistivity measurements. The electrical resistivity gradually increased at the stage of uniform elongation, while it significantly increased at the stage of local elongation.
Article
Physics, Fluids & Plasmas
Vitaliy Zhuravlyov, J. Goree, Jack F. Douglas, Paolo Elvati, Angela Violi
Summary: An analysis of experimental data showed that the static structure factor S(k) of a two-dimensional dusty plasma in its liquid state is particularly small at long wavelengths, specifically for small k values. Comparison with previously published experiments with other liquids revealed that the magnitude of S(k) at small k is typically in the range of 0.02-0.13, while for the dusty plasma liquid, it was found to be as small as 0.0139. Another significant finding is that S(k) at small k generally increases with temperature in the dusty plasma liquid, with its lowest value occurring near the melting point. Simulations of the dusty plasma liquid were consistent with experimental results, supporting earlier theoretical suggestions for creating hyperuniform materials with exceptionally low S(0) values using condensed materials that have soft interparticle interactions.
Article
Physics, Applied
Fan Wu, JiaYin Li, FengWu Liu, XinPei Lu
Summary: This paper investigates the ignition phase of a plasma scalpel by analyzing the electrical waveforms, vaporization dynamics, plasma production, and the plasma spectrum. Two types of vapor layers are formed during plasma production, one generated by Joule heating and the other by plasma heating. The study reveals that a thin vapor layer can sustain the plasma and the electron density is estimated at about 7.1 x 10(15) cm(-3) based on the broadening of the H-alpha line.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Sung Il Cho, Hyun Keun Park, Surin An, Sang Jeen Hong
Summary: Plasma is crucial in semiconductor processes, especially in the miniaturization and integration of devices. However, the increase in wafer surface temperature caused by the high RF power has posed challenges to the etching process. This study investigates the plasma characteristics using invasive and non-invasive diagnostic methods and proposes a real-time calculation of heat flux to anticipate wafer temperatures and address ion heating issues.
APPLIED SCIENCES-BASEL
(2023)
Article
Physics, Multidisciplinary
Zhe Ding, Jingfeng Yao, K. M. Rabadanov, E. A. Bogdanov, A. A. Kudryavtsev, N. A. Ashurbekov, Shubo Li, Chengxun Yuan, G. Sh Shakhsinov, Zhongxiang Zhou
Summary: This study examines the nonlocal electron kinetics of the positive column in a low-pressure argon glow discharge, particularly in the presence of high dust particle density. It is found that the presence of dust particles significantly affects the formation of the electron energy distribution function (EEDF) and other plasma characteristics, leading to large differences between the local and nonlocal EEDF.
CHINESE JOURNAL OF PHYSICS
(2022)
Review
Physics, Multidisciplinary
Lenaic Couedel
Summary: This article discusses the dynamics of temporal complex plasma afterglow, presents experimental and theoretical results, and introduces the basics of temporal afterglow modeling.
FRONTIERS IN PHYSICS
(2022)
Article
Physics, Fluids & Plasmas
I. B. Denysenko, E. von Wahl, S. Labidi, M. Mikikian, H. Kersten, T. Gibert, E. Kovacevic, N. A. Azarenkov
PLASMA PHYSICS AND CONTROLLED FUSION
(2019)
Article
Multidisciplinary Sciences
Cedric Pattyn, Eva Kovacevic, Thomas Strunskus, Thomas Lecas, Johannes Berndt
SCIENTIFIC REPORTS
(2019)
Article
Physics, Applied
I. B. Denysenko, E. von Wahl, M. Mikikian, J. Berndt, S. Ivko, H. Kersten, E. Kovacevic, N. A. Azarenkov
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2020)
Article
Nanoscience & Nanotechnology
Neelakandan M. Santhosh, Gregor Filipic, Eva Kovacevic, Andrea Jagodar, Johannes Berndt, Thomas Strunskus, Hiroki Kondos, Masaru Hori, Elena Tatarova, Uros Cvelbar
NANO-MICRO LETTERS
(2020)
Article
Physics, Fluids & Plasmas
Michael Klute, Horia-Eugen Porteanu, Ilija Stefanovic, Wolfgang Heinrich, Peter Awakowicz, Ralf Peter Brinkmann
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2020)
Article
Nanoscience & Nanotechnology
Shahzad Hussain, Eva Kovacevic, Johannes Berndt, Neelakandan M. Santhosh, Cedric Pattyn, Ana Dias, Thomas Strunskus, Mohamed-Ramzi Ammar, Andrea Jagodar, Mireille Gaillard, Chantal Boulmer-Leborgne, Uros Cvelbar
Article
Physics, Applied
I. B. Denysenko, I Stefanovic, M. Mikikian, E. Kovacevic, J. Berndt
Summary: The study examined the properties of argon/dust and pure argon pulsed plasmas using a spatially-averaged model. The results showed a good qualitative agreement between calculated and experimental data, with a better fit observed using Druyvesteyn EEPF. Additionally, the analysis highlighted the impact of pulsing frequency on plasma properties, revealing differences in density between dusty and dust-free plasmas.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Chemistry, Physical
Damjan Blazeka, Julio Car, Nikola Klobucar, Andrea Jurov, Janez Zavasnik, Andrea Jagodar, Eva Kovacevic, Niksa Krstulovic
Article
Multidisciplinary Sciences
D. Sciacqua, C. Pattyn, A. Jagodar, E. von Wahl, T. Lecas, T. Strunskus, E. Kovacevic, J. Berndt
SCIENTIFIC REPORTS
(2020)
Article
Physics, Fluids & Plasmas
Michael Klute, Efe Kemaneci, Horia-Eugen Porteanu, Ilija Stefanovic, Wolfgang Heinrich, Peter Awakowicz, Ralf Peter Brinkmann
Summary: The MMWICP is a new plasma source using the induction principle, with a mathematical model coupled with a chemistry model to describe its performance. Experimental data shows good agreement with the model, confirming its accuracy in predicting the behavior of the plasma source.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
Eva Kovacevic, Thomas Strunskus, Neelakandan M. Santhosh, Janez Zavasnik, Wolfgang E. S. Unger, Thierry Sauvage, Mohamed-Ramzi Ammar, Uros Cvelbar, Johannes Berndt
Summary: Thermally stable hydrogenated nitrogen-rich carbon nitride nanoparticles were successfully synthesized via low-pressure low-power plasma vapour deposition technique in this study. Through various analytical methods, the thermal stability and nitrogen-rich characteristics of the material were verified. The material was found to undergo a transformation during thermal annealing, while still maintaining stability at high temperatures.
Article
Chemistry, Physical
Vitalii Kuznetsov, Wiebke Lohstroh, Detlef Rogalla, Hans-Werner Becker, Thomas Strunskus, Alexei Nefedov, Eva Kovacevic, Franziska Traeger, Peter Fouquet
Summary: The study demonstrates that the diffusion of hydrogen molecules inside layered MoS2 crystals depends on their direction parallel and perpendicular to the basal planes. Within the two-dimensional crystal layers, hydrogen molecules diffuse quickly, while diffusion perpendicular to the basal planes is significantly slower.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Physics, Fluids & Plasmas
Horia-Eugen Porteanu, Ilija Stefanovic, Nikita Bibinov, Michael Klute, Peter Awakowicz, Ralf Peter Brinkmann, Wolfgang Heinrich
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2019)
