Absorption and transformation of laser energy in picosecond laser-plasma experiments at intensity of 1016 to 1019 W/cm2

V. G. Borodin, A. V. Charukchev, V. N. Chernov, O. N. Gilev, A. L. Zapysov, V. V. Il'in, V. M. Komarov, V. A. Malinov, V. M. Migel, N. V. Nikitin, V. Saprikin
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引用次数: 0

Abstract

The interaction of a 1053 nm picosecond laser pulse with a solid target for focused intensities of up to 1019 W/cm2 are studied by measurements of the absorption of the laser light in the plasma and by measurements of the production of hard x-rays. Absorption measurements are made by collecting the scattered light in set of calorimeters. Light scattered in backward and specular directions is collected separately. Measurements are presented for both high and low Z targets. Hard x-ray spectrum in range 15-1000 keV and hot electron production in range 1-22 MeV are measured using a multichannel filter/scintillator and filter/semiconductor spectrometers. Spatial parameters of fast ions are studied.
皮秒激光等离子体实验中强度为1016 ~ 1019 W/cm2激光能量的吸收和转化
通过测量等离子体中激光的吸收和硬x射线的产生,研究了1053 nm皮秒激光脉冲与聚焦强度高达1019 W/cm2的固体目标的相互作用。吸收测量是通过在一组量热计中收集散射光来完成的。光散射在反向和镜面方向分别收集。给出了高Z和低Z目标的测量结果。使用多通道滤波器/闪烁体和滤波器/半导体光谱仪测量了15-1000 keV范围内的硬x射线光谱和1-22 MeV范围内的热电子产生。研究了快离子的空间参数。
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