Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Byonghoon Seo"'
Autor:
Marietta Kaloyan, Sofiya Ghazaryan, Shreekrishna P. Tripathi, Walter Gekelman, Mychal J. Valle, Byonghoon Seo, Christoph Niemann
Publikováno v:
Instruments, Vol 6, Iss 2, p 17 (2022)
We present the first Thomson scattering measurements of electron density and temperature in the Large Plasma Device (LAPD), a 22 m long magnetized linear plasma device at the University of California Los Angeles (UCLA). The diagnostic spectrally reso
Externí odkaz:
https://doaj.org/article/56301ec0e4ef49168e509ceaf39cdb3a
Publikováno v:
Current Applied Physics. 17:1254-1259
We study the spatial distribution of the metastable-state argon atoms in high density helicon plasmas by means of laser-induced fluorescence. It is observed that the neutral argon in metastable-state has an anomalous radial distribution in density; i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd117bde8f33272d8f335aa72c05e956
https://doi.org/10.1016/j.cap.2017.05.010
https://doi.org/10.1016/j.cap.2017.05.010
We present observations of large‐amplitude (δB/B∼ 0.01) oblique whistler wave pulses generated by a spontaneous, 3‐D localized magnetic reconnection event in the Caltech jet experiment. The wave pulses are measured more than 50 ion skin depths
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c38af7637ce1106b33c2fbbf4b53cbe9
https://resolver.caltech.edu/CaltechAUTHORS:20190619-073249895
https://resolver.caltech.edu/CaltechAUTHORS:20190619-073249895
Autor:
Hui Li, Paul M. Bellan, Pakorn Wongwaitayakornkul, Byonghoon Seo, Magnus Haw, Ryan S. Marshall
Publikováno v:
Physics of Plasmas. 27:022109
We report the observations of a plasma jet evolving through a macro- to micro-scale progression sequence. This leads to a fast magnetic reconnection that results in the jet breaking off from its originating electrode and forming a force-free state. A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fe94d2bc1642798ca53f3433fb545eac
https://doi.org/10.1063/1.5140348
https://doi.org/10.1063/1.5140348
Autor:
Paul M. Bellan, Byonghoon Seo
Publikováno v:
The Review of scientific instruments. 88(12)
An interferometer is a useful diagnostic tool for measuring line-averaged electron density but is limited in its use because it generally measures at a fixed location. We report here a spatially translatable fiber-coupled interferometer that measures
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a1081dad901e633e272910889291c515
https://pubmed.ncbi.nlm.nih.gov/29289217
https://pubmed.ncbi.nlm.nih.gov/29289217
A “cutoff probe” uses microwaves to measure the electron density in a plasma. It is particularly attractive because it is easy to fabricate and use, its measurement is immune to surface contamination by dielectric materials, and it has a straight
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::23a37e88312b2d9eaf84c70220b8751c
https://resolver.caltech.edu/CaltechAUTHORS:20171206-095638236
https://resolver.caltech.edu/CaltechAUTHORS:20171206-095638236
Autor:
D. J. Seong, Byonghoon Seo, Hong-Young Chang, Kwang-Ho You, Shin-Jae You, Dae-Woong Kim, Jin-Gyu Kim, Byung-Keun Na, Y.H. Shin
Publikováno v:
Thin Solid Films. 547:250-255
A cutoff probe is a diagnostic method to find the absolute plasma density through simple means. However, when the cutoff probe is used in the high density plasma diagnostics, the probe can be faced with measurement problems because the high influx en
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc35722f4cd7d3e23b334fd55960d7cb
https://doi.org/10.1016/j.tsf.2013.01.026
https://doi.org/10.1016/j.tsf.2013.01.026
Publikováno v:
Thin Solid Films. 547:52-56
We reported the measurements of electron energy probability functions (EEPFs) in helicon discharge using laser Thomson scattering (LTS). A problematic effect in the measurement, the measured signal intensity in the ICCD camera is influenced by the ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d4f5118ae7a56d49a2ac3356793199e
https://doi.org/10.1016/j.tsf.2013.05.011
https://doi.org/10.1016/j.tsf.2013.05.011
Autor:
Jung-Hyung Kim, D. J. Seong, Deuk Chul Kwon, K. H. You, Hyo-Chang Lee, Seung-Ju Oh, Chin-Wook Chung, ChaeHo Shin, Byonghoon Seo
It is generally recognized that the electron temperature T_e either remains constant or decreases slightly with plasma power (plasma density). This trend can be simply verified using a single-step or multi-step fluid global model. In this work, howev
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b05f0a15ee1897014d3efd087772b884
https://resolver.caltech.edu/CaltechAUTHORS:20170109-095348152
https://resolver.caltech.edu/CaltechAUTHORS:20170109-095348152
Autor:
Byonghoon Seo, Paul M. Bellan
Publikováno v:
Physics of Plasmas. 25:112703
Adiabatic compression has been investigated by having an MHD-driven plasma jet impact a gas target cloud. Compression and heating of the jet upon impact were observed and compared to theoretical predictions. Diagnostics for comprehensive measurements
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e8f3552346f25d737c1403129f960db9
https://doi.org/10.1063/1.5045678
https://doi.org/10.1063/1.5045678