TY - JOUR
T1 - EUV Spectra from Laser-Produced Tungsten Plasmas
AU - OHASHI, Hayato
AU - KAWASAKI, Hiromu
AU - SHIMADA, Yuta
AU - NAMBA, Shinichi
AU - O'SULLIVAN, Gerry
AU - HIGASHIGUCHI, Takeshi
N1 - Publisher Copyright:
© (2025), (Japan Society of Plasma Science and Nuclear Fusion Research). All rights reserved.
PY - 2025
Y1 - 2025
N2 - We observed the EUV emission spectra from laser-produced tungsten plasmas. The spectral structures were compared by optical thickness due to the critical density difference of 1 × 1021 and 4 × 1021 cm−3 with laser wavelengths of 1064 nm and 532 nm, respectively. We found some spectral structure changes, an increase of emission in 1 - 3 nm region under an optically thick condition while a decrease of a peak near 5 nm for unresolved transition array of 4d - 4f transitions. Some 1.3 - 2.5 nm peaks were attributed to charge states higher than W30+. We showed some dependence of the spectral behavior for the EUV emission.
AB - We observed the EUV emission spectra from laser-produced tungsten plasmas. The spectral structures were compared by optical thickness due to the critical density difference of 1 × 1021 and 4 × 1021 cm−3 with laser wavelengths of 1064 nm and 532 nm, respectively. We found some spectral structure changes, an increase of emission in 1 - 3 nm region under an optically thick condition while a decrease of a peak near 5 nm for unresolved transition array of 4d - 4f transitions. Some 1.3 - 2.5 nm peaks were attributed to charge states higher than W30+. We showed some dependence of the spectral behavior for the EUV emission.
KW - extreme ultraviolet (EUV)
KW - highly charged ion (HCI) DOI: 10.1585/pfr.20.2401014
KW - laser-produced plasma
KW - tungsten (W)
UR - http://www.scopus.com/inward/record.url?scp=85217506426&partnerID=8YFLogxK
U2 - 10.1585/pfr.20.2401014
DO - 10.1585/pfr.20.2401014
M3 - 学術論文
AN - SCOPUS:85217506426
SN - 1880-6821
VL - 20
JO - Plasma and Fusion Research
JF - Plasma and Fusion Research
M1 - 2401014
ER -