journal article·2020-06-01Open access

Electron temperature and soft x-ray intensity scaling in laser heavy element plasma interaction

Hiromu Kawasaki, Atsushi Sunahara, Yuta Shimada, Takeo Ejima, Weihua Jiang, Gerry O’Sullivan, Masaharu Nishikino, Shinichi Namba, Takeshi Higashiguchi

AIP Advances· Volume 10· Issue 6

Abstract

We achieved a relative optically thin state in laser-produced heavy element plasmas at determined electron temperatures, which has been predicted by power balance and collisional-radiative models. We also mapped the power-loss processes in sub-nanosecond and nanosecond laser-produced high-Z plasmas. The electron temperature evaluation was in good agreement with the power balance model and was supported by the spectral analysis. The output flux in the soft x-ray region was stronger at a higher critical density.
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Research context

OpenAlex topics: Atomic and Molecular Physics · Laser-induced spectroscopy and plasma · Laser-Plasma Interactions and Diagnostics

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Electrical and Electronic Engineering, Faculty of Engineering, Utsunomiya University 1 , 7-1-2 Yoto, Utsunomiya, Tochigi 321-8585, Japan

Center for Materials Under Extreme Environment (CMUXE), School of Nuclear Engineering, Purdue University 2 , West Lafayette, Indiana 47907, USA

Institute of Laser Engineering, Osaka University 3 , 2-6 Yamadaoka, Suita, Osaka 565-0871, Japan

Institute of Multidisciplinary Research for Advanced Materials, Tohoku University 4 , 2-1-1, Katahira, Aoba-ku, Sendai 980-8577, Japan

Department of Electrical Engineering, Nagaoka University of Technology 5 , Nagaoka, Niigata 940-2188, Japan

School of Physics, University College Dublin 6 , Belfield, Dublin 4, Ireland

Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology (QST) 7 , Kizugawa, Kyoto 619-0215, Japan

Graduate School of Engineering, Hiroshima University 8 , 1-4-1 Kagamiyama, Higashihiroshima, Hiroshima 739-8527, Japan

Funding

Japan Society for the Promotion of Science

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