Plasma Sci. Technol., 2021 23(1) Published: 16 November 2020 Previous Issue Next Issue
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Yahong XIE (谢亚红), Chundong HU (胡纯栋), Jianglong WEI (韦江龙), et al.
Plasma Sci. Technol. 2021, 23(1): 012001; doi: 10.1088/2058-6272/abc46b
Abstract ( 26) PDF (2463KB) ( 73 )
In order to understand the physics and pre-study the engineering issues for radio frequency (RF) negative beam source, a prototype source with a single driver and three-electrode accelerator was developed. Recently, the beam source was tested on the RF source test facility with RF plasma generation, negative ion production and extraction. A magneti... -
Yue YANG (杨月), Boyuan LI (李博原), Yuchi WU (吴玉迟), et al.
Plasma Sci. Technol. 2021, 23(1): 015001; doi: 10.1088/2058-6272/abbd37
Abstract ( 24) PDF (799KB) ( 47 )
The transport of sub-picosecond laser-driven fast electrons in nanopore array targets is studied. Attributed to the generation of micro-structured magnetic fields, most fast electron beams are proven to be effectively guided and restricted during the propagation. Different transport patterns of fast electrons in the targets are observed in experime... -
Fangping WANG(王芳平), Juanfang HAN (韩娟芳) and Wenshan DUAN (段文山)
Plasma Sci. Technol. 2021, 23(1): 015002; doi: 10.1088/2058-6272/abc676
Abstract ( 17) PDF (910KB) ( 48 )
By performing modulational instability analysis of the the nonlinear coupled dimensionless equations between a fast magnetosonic wave (FMSW) propagating obliquely with the magnetic field and a low-frequency slow Alfvén wave (SAW), we obtain the dispersion relation of the perturbation wave. The growth rate of the perturbation wave is obtained. It is... -
Nureli YASEN, Baisong XIE (谢柏松), and Weiyuan LIU (刘维媛)
Plasma Sci. Technol. 2021, 23(1): 015003; doi: 10.1088/2058-6272/abcaed
Abstract ( 12) PDF (1302KB) ( 41 )
We use quantum electrodynamics particle-in-cell simulation to study the generation of dense electron–positron plasma and strong γ-ray bursts in counter-propagating laser beam interactions with two different solid targets, i.e. planar (type I) and convex (type II). We find that type II limits fast electron flow most effectively. while the photon den... -
Hongyu WANG (王虹宇) , Pengfei LIU (刘鹏飞) , Zhihong LIN (林志宏) , et al.
Plasma Sci. Technol. 2021, 23(1): 015101; doi: 10.1088/2058-6272/abc871
Abstract ( 13) PDF (2513KB) ( 30 )
Global linear gyrokinetic simulations using realistic DIII-D tokamak geometry and plasma profiles find co-existence of unstable reversed shear Alfvén eigenmodes (RSAE) with low toroidal mode number n and electromagnetic ion temperature gradient (ITG) instabilities with higher toroidal mode number n. For intermediate n=[10, 12], RSAE and ITG co-e... -
Zifeng SONG (宋仔峰), Bin ZHU (朱斌), Yunqing XIAO (肖云青), et al.
Plasma Sci. Technol. 2021, 23(1): 015201; doi: 10.1088/2058-6272/abc46a
Abstract ( 19) PDF (1457KB) ( 7 )
In this work, the gas-Cherenkov detector with an off-axis parabolic reflector (OprGCD) is designed using the Geant4 Monte Carlo simulation toolkit, which is helpful to improve the collection efficiency of Cherenkov photons. The method to study the performance of OprGCD based on femtosecond laser-wakefield-accelerated electron beams is presented. Ch... -
Zun ZHANG (张尊), Zhe ZHANG (章喆), Haibin TANG (汤海滨), et al.
Plasma Sci. Technol. 2021, 23(1): 015401; doi: 10.1088/2058-6272/abae4a
Abstract ( 33) PDF (1549KB) ( 33 )
The characteristics of electrons play a dominant role in determining the ionization and acceleration processes of plasmas. Compared with electrostatic diagnostics, the optical method is independent of the radio frequency (RF) noise, magnetic field, and electric field. In this paper, an optical emission spectroscope was used to determine the plasma ... -
Weijie HUO (霍卫杰), Jing HU (胡静), Xiaotong CAO (曹晓彤), et al.
Plasma Sci. Technol. 2021, 23(1): 015402; doi: 10.1088/2058-6272/abc823
Abstract ( 11) PDF (1744KB) ( 12 )
In order to investigate the process of optically triggered discharge formation, a model of ion space-charge formation based on classical plane electrodes and revised for a characteristic hollow-cathode discharge (HCD) configuration is proposed in this paper. The primary modified factor in our model is the penetrating electric-field parameter, which... -
Tianyuan HUANG (黄天源), Peiyu JI (季佩宇), Jianjun HUANG (黄建军), et al.
Plasma Sci. Technol. 2021, 23(1): 015403; doi: 10.1088/2058-6272/abcb55
Abstract ( 18) PDF (2036KB) ( 8 )
Modification of exposure conditions downstream in the diffusion chamber has been performed in helicon antenna-excited helium plasma by adjusting the magnetic field (intensity and geometry). In the inductively coupled mode (H mode), a reduction in ion and heat fluxes is found with increasing magnetic field intensity, which is further explained by th... -
Jiahui ZHANG (张珈珲), Xin JI (吉欣), Keyuan YANG (杨克元), et al.
Plasma Sci. Technol. 2021, 23(1): 015404; doi: 10.1088/2058-6272/abc946
Abstract ( 18) PDF (2304KB) ( 16 )
Energy dissipation and power deposition of electromagnetic waves (EMW) in the reentry plasma sheath provide an opportunity to investigate 'communication blackout' phenomena. Based on a finite element method (FEM) simulation, we analyze variation of EMW energy dissipation and power deposition profiles dependent on the wave polarization, wave inciden... -
Sijia NI (倪思佳), Yixi CAI (蔡忆昔), Yunxi SHI (施蕴曦), et al.
Plasma Sci. Technol. 2021, 23(1): 015405; doi: 10.1088/2058-6272/abc822
Abstract ( 10) PDF (1717KB) ( 12 )
Packed-bed reactors (PBRs) hold great promise for environmental applications, but a deeper understanding of the behavior of plasma discharge within PBRs is required. To this end, a partial-discharge alternative equivalent circuit for PBRs was established in this work. Dielectric particles (glass beads or glass sand) were used to place focus on the ...
