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A flat-field soft X-ray spectrometer for X-ray absorption spectroscopy measurement of warm dense matter

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Title
A flat-field soft X-ray spectrometer for X-ray absorption spectroscopy measurement of warm dense matter
Author(s)
Gyeongbo Kang; Kim M.; Bae L.; Seong Hyeok Yang; Min Sang Cho; Chuin Hong Yap; Jung J.H.; Seung Woo Kang; Il Woo Choi; Chang Hee Nam; Byoung Ick Cho
Subject
High power laser, ; Laser plasma, ; Soft X-ray spectrometer, ; Warm dense matter, ; X-ray spectroscopy
Publication Date
2019-04
Journal
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, v.922, pp.114 - 118
Publisher
ELSEVIER SCIENCE BV
Abstract
A flat-field soft X-ray spectrometer operating in the spectral range of 250–1240 eV was designed and built for warm dense matter and high-energy density plasma physics. It employs a grazing incidence toroidal mirror as a focusing optic, an aberration-corrected varied line-spacing concave grating with 2400 lines/mm as a dispersive element, and a charge coupled device as an X-ray detector. The dispersion and energy resolution are calibrated with a high-power laser-produced plasma and X-ray free electron laser sources. A resolving power over 370 was achieved over the entire spectral range. A super broadband spectrum in the range of 250–1000 eV was measured from the laser-produced bismuth plasma. The signal-to-noise ratio of 130 was obtained with an average of 10 pulses. These results demonstrate the capability of the spectrometer for single laser shot based experiments for warm dense matter and high energy density plasma research. © 2018 Elsevier B.V
URI
https://pr.ibs.re.kr/handle/8788114/5643
DOI
10.1016/j.nima.2018.12.053
ISSN
0168-9002
Appears in Collections:
Center for Relativistic Laser Science(초강력 레이저과학 연구단) > 1. Journal Papers (저널논문)
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