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Enhancement of K-shell spectroscopy for temperature measuring of isochorically heated matter in the sub-keV range

A S Martynenko, T A Pikuz, I Yu Skobelev, S A Pikuz, N Iwata, T Johzaki, J Kawanaka, K F F Law, S Fujioka, R Kodama2023年Plasma Physics and Controlled FusionIF 2.2出版社

Both K-shell x-ray emission spectroscopy and fluorescence spectroscopy are well-accepted diagnostics for experimental studies of warm dense matter and hot dense matter (HDM). Until now, however, this diagnosis has been used for the study of dense matter with temperatures lower than 100 eV or with temperatures above 1 keV. In this work, we have demonstrated the possibility of using K-shell emission spectroscopy for an intermediate temperature range of 100s eV to study dense plasma. Here, we discuss an analysis of the HDM emission spectra of a solid-state copper with temperatures up to a few hundreds of electronvolts heated by laser-accelerated charged particles.

日本語訳

K殻X線発光分光法と蛍光分光法は、いずれも温かい高密度物質および高温高密度物質(HDM)の実験的研究において広く受け入れられた診断手法である。しかしながら、これまでこの診断法は、100 eV未満の温度または1 keVを超える温度の高密度物質の研究に用いられてきた。本研究では、K殻X線発光分光法を、100 eV台の中間温度領域の高密度プラズマの研究に適用できることを実証した。ここでは、レーザー加速荷電粒子によって加熱された固体状態の銅の、数百電子ボルトまでの温度におけるHDM発光スペクトルの解析について論じる。

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