Výsledky vyhledávání - "Jonghyeon Ryu"

Akademický článek

Estimation of plasma parameters of X-pinch with time-resolved x-ray spectroscopy

Autor: Seunggi Ham, Jonghyeon Ryu, Hakmin Lee, Sungbin Park, Y.-C. Ghim, Y. S. Hwang, Kyoung-Jae Chung

Publikováno v: Matter and Radiation at Extremes, Vol 8, Iss 3, Pp 036901-036901-13 (2023)

We estimate the parameters of a Cu plasma generated by an X-pinch by comparing experimentally measured x-rays with synthetic data. A filtered absolute extreme ultraviolet diode array is used to measure time-resolved x-ray spectra with a spectral reso

Externí odkaz: https://doaj.org/article/823f43961b86408c89023d86d5f6a004

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Numerical study of plasma evolution X-pinches in two- and three-dimensional geometry using a MHD code, STHENO

Autor: Jae Gon Lee, Sang Jun Lee, Deok-Kyu Kim, Sang-Min Byun, Jonghyeon Ryu, Kyoung-Jae Chung, Yong-Su Na, Chanyoung Lee

Publikováno v: Journal of the Korean Physical Society. 79:818-827

This paper deals with a newly developed resistive magnetohydrodynamic code, STHENO, for X-pinch analyses on 3D (x, y, z) and 2D (r, z) geometry. The single-fluid two-temperature model is adopted by assuming collisional plasmas. The thermodynamic para

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4933b9c16f3d0898326c843518ccd3eb
https://doi.org/10.1007/s40042-021-00289-7

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Time-Resolved Analysis of SF6 Arc Plasmas in a Laboratory Model Chamber for Circuit Breaker

Autor: Jonghyeon Ryu, Kyoung-Jae Chung, Seunggi Ham, Sungbin Park, Yunji Hwang, Donghee Kim, YooSung Kim

Publikováno v: IEEE Transactions on Plasma Science. 48:3968-3974

This article presents time-resolved analysis of SF6 arc plasma generated in a laboratory-scale model chamber prepared for studying the characteristics of a circuit breaker. During the arc discharge, the optical emission spectra are measured by a high

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dd45187a6dd16e4f897f50d0a2c07d3d
https://doi.org/10.1109/tps.2020.3031316

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Measurement on the electrical conductivity of copper along the binodal curve in warm dense regime

Autor: Hakmin Lee, Sungbin Park, Kern Lee, Jonghyeon Ryu, Deok-Kyu Kim, Kyoung-Jae Chung, Yunji Hwang

Publikováno v: Applied Physics Letters. 119:174102

This paper presents the electrical conductivity data of copper along the gas branch of the binodal curve in the warm dense matter (WDM) regime as a function of mass density and temperature. All data are obtained using the underwater wire explosion te

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e898591e33132eae72eafd50d6640abc
https://doi.org/10.1063/5.0063073

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Development of a filtered AXUV diode array for X-pinch soft x-ray spectra in the energy range of 1–10 keV

Autor: H. J. Woo, Seunggi Ham, Yong-Seok Hwang, Jonghyeon Ryu, Young-chul Ghim, Kyoung-Jae Chung, Sungbin Park

Publikováno v: Review of Scientific Instruments. 92:053509

We develop a filtered absolute extreme ultraviolet (AXUV) diode array to measure the time evolution of the soft x-ray spectrum in the energy range of 1-10 keV. AXUV-HS5, the detector, has a fast rise time of 0.7 ns, a wide energy detection range, and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2dd663915ef3220bbafd784af9409394
https://doi.org/10.1063/5.0034638

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Data analysis scheme for correcting general misalignments of an optics configuration for a voltage measurement system based on the Pockels electro-optic effect

Autor: Jonghyeon Ryu, Dong-Geun Lee, Seunggi Ham, Young-chul Ghim, H. J. Woo, Seongmin Choi, Yong-Seok Hwang, Kyoung-Jae Chung, Suk-Ho Hong

Publikováno v: Review of Scientific Instruments. 92:043105

Having a sub-ns response time and not requiring physical contacts to the measurement points, a voltage measurement system based on the Pockels electro-optic effect, referred to as a PE (Pockels effect)-based voltmeter, is widely used for pulsed high

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::45ece7b5d1864b8592ec4a0ded1512e2
https://doi.org/10.1063/5.0040467

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