Article
Physics, Applied
Jian He, Zhiqiang Zhen
Summary: The study utilized the collision-excitation model for Sulfur plasma to accurately diagnose electron temperature, revealing that specific transitions of Sulfur III can be utilized for temperature calculation, with the line ratio of transitions affecting electron temperature. This has significance for plasma electron temperature diagnostics.
MODERN PHYSICS LETTERS B
(2021)
Article
Optics
Xie-Qiu Yu, Yu-Shan Zeng, Li-Wei Song, De-Yin Kong, Si-Bo Hao, Jia-Yan Gui, Xiao-Jun Yang, Yi Xu, Xiao-Jun Wu, Yu-Xin Leng, Ye Tian, Ru-Xin Li
Summary: Using terahertz surface waves, electron energy gain of up to 1.1 MeV and effective acceleration gradient of up to 210 MV m(-1) can be achieved, enabling potential phase-space control and application in compact microscopy, radiation sources, and cancer therapies.
Article
Multidisciplinary Sciences
Francesco Gabriele, Mattia Udina, Lara Benfatto
Summary: The study demonstrates that THz light can induce two-plasmon excitations of both out-of-plane and in-plane phase modes, leading to markedly different resonant and thermal effects due to the strong anisotropy of the Josephson couplings.
NATURE COMMUNICATIONS
(2021)
Article
Physics, Fluids & Plasmas
V Laporta, L. Vialetto, V Guerra
Summary: A full set of vibrationally-resolved cross sections for electron impact excitation of NO(X-2 pi, v) molecules is calculated, and the electron-vibration energy exchanges in non-equilibrium thermodynamic conditions are studied. The calculated vibration relaxation times are in good agreement with the experimental data. The new vibrational excitation cross sections play an important role in obtaining non-equilibrium electron energy distributions functions and calculating electron transport parameters in NO.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2022)
Article
Physics, Multidisciplinary
D. A. Bandurin, E. Monch, K. Kapralov, I. Y. Phinney, K. Lindner, S. Liu, J. H. Edgar, I. A. Dmitriev, P. Jarillo-Herrero, D. Svintsov, S. D. Ganichev
Summary: Deviation from cyclotron resonance behavior in graphene is reported, showing overtone resonances due to ultraslow magnetoplasmonic excitations. Absorption of radiation via non-local collective modes can facilitate a strong photoresponse, potentially useful for infrared and terahertz technology.
Article
Mathematics, Interdisciplinary Applications
Haifa A. Alyousef, Alvaro H. Salas, M. R. Alharthi, S. A. El-Tantawy
Summary: In this study, new hypotheses and techniques are presented to obtain new analytical solutions to the generalized Kawahara equation. Traveling wave solutions to both the Kawahara equation and the modified Kawahara equation are derived, with periodic and soliton solutions obtained. The solutions can be applied to the study of nonlinear waves propagating in plasma.
Article
Physics, Multidisciplinary
Vijay Bagul, Prithvi Singh
Summary: In this study, we investigate the results of previous plane wave and current twisted wave electron double ionisation (e, 3e) near the threshold energy using the second Born approximation. We compare the impact of different m parameters on orbital angular momentum and find that the theoretical twisted wave results are in good agreement with experimental non-twisted (i.e., plane wave) results.
Article
Multidisciplinary Sciences
Seyyed Mehdi Hosseini Jenab, Gert Brodin, James Juno, Ioannis Kourakis
Summary: A new distribution function for electron holes in plasma kinetic theory is proposed in this study, with nonlinear solutions obtained through kinetic simulations showing velocities twice the electron thermal speed. The propagation characteristics and stability of these electron holes are established through long-time evolution and analysis of their behavior in mutual collisions.
SCIENTIFIC REPORTS
(2021)
Article
Multidisciplinary Sciences
Mikhail Yu Morozov, Vyacheslav V. Popov, Denis Fateev
Summary: The study introduces a concept of an electrically controllable plasmonic directional coupler of terahertz signal based on a dual grating gate, and calculates its characteristics. Excitation of plasmons using the grating gate provides effective coupling of incident electromagnetic waves to plasmons, with a transformation coefficient exceeding unity due to amplification of plasmons in the structure.
SCIENTIFIC REPORTS
(2021)
Article
Multidisciplinary Sciences
Shahrina Akter, M. G. Hafez
Summary: This paper investigates the head-on collision between two-counter propagating positron acoustic solitons and double layers in an unmagnetized collisionless plasma. The derived equations provide insights into the effect of dimensionless parameters on the propagation characteristics of solitons and double layers. The findings are significant for both space, astrophysical, and laboratory studies.
SCIENTIFIC REPORTS
(2022)
Article
Materials Science, Multidisciplinary
Sunidhi Singla, N. S. Saini
Summary: This investigation focuses on the head-on collision of ion-acoustic multi-solitons and characteristics of ion acoustic rogue waves in an unmagnetized plasma. The Korteweg-de Vries equation is derived and the effects of electron beam parameters on IA solitons are analyzed. Additionally, nonlinear Schrodinger equation is derived from the KdV equation to study different orders rogue waves.
RESULTS IN PHYSICS
(2021)
Article
Physics, Fluids & Plasmas
Y. M. Aliev, M. Kraemer
Summary: New guided electrostatic and electromagnetic modes in a nonuniform magnetized plasma with plane geometry are presented. These modes can arise in a plasma with strong inhomogeneity, leading to concentration of wave energy and localization of the modes. They are only able to propagate when the density gradient is sufficiently strong, and they do not exist in weakly nonuniform plasmas. The eigenfunctions and spectrum of these modes are determined, and their properties are studied in detail for specific profiles in the transitional layer between two uniform plane plasma regions.
PHYSICS OF PLASMAS
(2023)
Article
Physics, Fluids & Plasmas
Zhan-Bin Chen
Summary: This article proposes a fully relativistic approach to predict the characteristics of light emitted after excitation of plasma-embedded ions by electron impact. The approach takes into account the plasma shielding effects, Breit interaction, and quantum electrodynamics effects. The results show that the plasma density effect has a significant impact on atomic structures and collision cross sections, but has limited influence on polarization characteristics.
PHYSICS OF PLASMAS
(2022)
Editorial Material
Nanoscience & Nanotechnology
Xinliang Li, Hao Luo
Summary: Researchers reported high absorption approaching the theoretical upper limit in the entire terahertz band using MXene-based terahertz absorbers, and constructed an applicable alternating current impedance matching model based on these findings.
NANO-MICRO LETTERS
(2023)
Article
Physics, Fluids & Plasmas
Deepa Verma, Armelle Michau, Angela Vasanelli, Carlo Sirtori, Khaled Hassouni
Summary: The kinetic behavior of electrons in a thin semiconductor layer subjected to voltage pulses is investigated using particle-in-cell/Monte Carlo collision simulations based on the electron Boltzmann equation. The results show that highly nonlinear interactions between the space-charge field and the electrons lead to oscillations due to the relatively high plasma density. The dynamics and phase-space trajectories of the excited electron waves depend on the doping level. Strong oscillations occur during the relaxation phase and are subsequently damped with time scales between 100 and 400 fs, decreasing with doping level. The emitted power spectra exhibit a high-energy band and a low-energy peak, attributed to bounded plasma resonances and a sheath effect, respectively.
PHYSICS OF PLASMAS
(2023)
Article
Optics
Anton N. Tcypkin, Evgenia A. Ponomareva, Sergey E. Putilin, Semen Smirnov, Sviatoslav A. Shtumpf, Maksim Melnik, E. Yiwen, Sergei A. Kozlov, Xi-Cheng Zhang
Article
Optics
Evgenia A. Ponomareva, Anton N. Tcypkin, Semen Smirnov, Sergey E. Putilin, E. Yiwen, Sergei A. Kozlov, Xi-Cheng Zhang
Article
Physics, Applied
Yuqi Cao, Yiwen E, Pingjie Huang, X. -C. Zhang
APPLIED PHYSICS LETTERS
(2020)
Article
Optics
Si-Chao Chen, Zheng Feng, Jiang Li, Wei Tan, Liang-Hui Du, Jianwang Cai, Yuncan Ma, Kang He, Haifeng Ding, Zhao-Hui Zhai, Ze-Ren Li, Cheng-Wei Qiu, Xi-Cheng Zhang, Li-Guo Zhu
LIGHT-SCIENCE & APPLICATIONS
(2020)
Article
Optics
Hang Zhao, Yong Tan, Liangliang Zhang, Rui Zhang, Mostafa Shalaby, Cunlin Zhang, Yuejin Zhao, Xi-Cheng Zhang
LIGHT-SCIENCE & APPLICATIONS
(2020)
Article
Optics
Kareem J. Garriga Francis, Mervin Lim Pac Chong, E. Yiwen, X. -C. Zhang
Article
Nanoscience & Nanotechnology
Yiwen E, Yuqi Cao, Fang Ling, X. -C. Zhang
Article
Engineering, Electrical & Electronic
Chen Xie, Zhangwei Huang, Yiwen E, Xi-Cheng Zhang, Xusheng Kang, Yehao Ma, Pingjie Huang, Guangxin Zhang
Summary: The performances of NMF, SMMA, and MCR-ALS were compared in complex systems, with MCR-ALS showing higher consistency and precision in resolving spectra. Experimental results demonstrate the promising potential and broad application prospects of MCR-ALS in analyzing THz spectra.
JOURNAL OF INFRARED MILLIMETER AND TERAHERTZ WAVES
(2021)
Article
Nanoscience & Nanotechnology
Xinrui Liu, Maksim S. Kulya, Nikolay V. Petrov, Yaroslav V. Grachev, Mingzhao Song, Anton N. Tcypkin, Sergey A. Kozlov, Xi-Cheng Zhang
Article
Physics, Multidisciplinary
Yong Tan, Hang Zhao, Wei-Min Wang, Rui Zhang, Yue-Jin Zhao, Cun-Lin Zhang, Xi-Cheng Zhang, Liang-Liang Zhang
Summary: In this study, a THz coherent detection scheme based on liquid water is proposed. The scheme offers high sensitivity and a wide frequency range for the time-resolved waveform of the THz field. It is sensitive to THz polarization and phase difference, and also demonstrates robustness and flexibility.
PHYSICAL REVIEW LETTERS
(2022)
Article
Optics
Qi Jin, E. Yiwen, Shenghan Gao, Xi-Cheng Zhang
ADVANCED PHOTONICS
(2020)
Proceedings Paper
Optics
Jiapeng Zhao, E. Yiwen, Kaia Williams, X-C Zhang, Robert W. Boyd
TERAHERTZ, RF, MILLIMETER, AND SUBMILLIMETER-WAVE TECHNOLOGY AND APPLICATIONS XIII, 2020
(2020)
Proceedings Paper
Optics
Evgenia A. Ponomareva, Sergey E. Putilin, Anton N. Tcypkin, E. Yiwen, Sergei A. Kozlov, Xi-Cheng Zhang
INFRARED, MILLIMETER-WAVE, AND TERAHERTZ TECHNOLOGIES VI
(2019)
Proceedings Paper
Optics
Shenghan Gao, Qi Jin, E. Yiwen, X. -C. Zhang
INFRARED, MILLIMETER-WAVE, AND TERAHERTZ TECHNOLOGIES VI
(2019)
Review
Engineering, Electrical & Electronic
Kang Liu, Pingjie Huang, Xi-Cheng Zhang
FRONTIERS OF OPTOELECTRONICS
(2019)