Influence of hot electrons on the spectra of iron plasma irradiated by femtosecond laser pulses with 1021 W/cm2 intensities

被引：4

作者：

Stafford, A. ^{[1
]}

Safronova, A. S. ^{[1
]}

Faenov, A. Ya. ^{[2
,3
]}

Pikuz, T. A. ^{[3
,4
,5
]}

Kodama, R. ^{[2
,4
,5
]}

Kantsyrev, V. L. ^{[1
]}

Shrestha, I. ^{[1
]}

Shlyaptseva, V. V. ^{[1
]}

机构：

[1] Univ Nevada, Dept Phys, Reno, NV 89557 USA

[2] Osaka Univ, Inst Acad Initiat, Suita, Osaka 5650871, Japan

[3] Russian Acad Sci, Joint Inst High Temp, Moscow 125412, Russia

[4] Osaka Univ, PPC, Suita, Osaka 565087, Japan

[5] Osaka Univ, Grad Sch Engn, Suita, Osaka 565087, Japan

来源：

LASER AND PARTICLE BEAMS | 2017年 / 35卷 / 01期

关键词：

Relativistic laser plasma; X-ray sources; X-ray spectroscopy; X-RAY-SPECTRA; HIGH-RESOLUTION MEASUREMENTS; FE-XXV; ASTROPHYSICS; FLUORESCENCE; CLUSTERS; XVIII; LINE;

D O I：

10.1017/S026303461600077X

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The use of laboratory experiments as plasma creating sources is a valuable tool for understanding astrophysical observations. Recently plasma created through irradiation by lasers with relativistic intensities has been used to study effects of hot electrons and X-ray pumping on X-ray formation of multiply charged ions spectra. This paper discusses the formation of K-shell Fe spectra recorded from a plasma irradiated by 35 fs pulses with intensities of 10(21) W/cm(2). Modeling of the spectra suggests three different regions of plasma radiation including a cold similar to 10 eV region, a mild similar to 700 eV region, and a hot similar to 3500 eV region. The influence of hot electrons and X-ray pumping is discussed and a comparison with K-shell Fe spectra from a 1 MA X-pinch experiment is included to highlight the differences due to the shorter time frame of the laser-plasma interaction experiment.

引用

页码：92 / 99

页数：8

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