Investigation of the Spectral Composition of X-Ray Radiation from Femtosecond Laser Plasma by Thermoluminescent Detectors

被引：0
|
作者：
Salakhutdinov, G. H. [1 ]
Ivanov, K. A. [2 ,3 ]
Grigoryeva, I. G. [1 ]
Kushin, V. V. [1 ]
Rupasov, A. A. [3 ]
Tsymbalov, I. N. [4 ]
Savelyev-Trofimov, A. B. [2 ,3 ]
Busygina, I. A. [1 ]
Naumov, P. Yu. [1 ]
机构：
[1] Natl Res Nucl Univ MEPhI, Moscow Engn Phys Inst, Moscow 115409, Russia
[2] Moscow State Univ, Moscow 119991, Russia
[3] Russian Acad Sci, Lebedev Phys Inst, Moscow 119991, Russia
[4] Russian Acad Sci, Inst Nucl Res INR, Moscow 117312, Russia
来源：
INSTRUMENTS AND EXPERIMENTAL TECHNIQUES | 2024年 / 67卷 / 05期
基金：
俄罗斯科学基金会;
关键词：
SPECTROMETRY; COMPONENT; ELECTRONS; PULSES;
D O I：
10.1134/S002044122470163X
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A technique based on thermoluminescent LiF(Mg,Ti) lithium fluoride detectors has been developed to study the spectral composition of X-ray radiation of femtosecond laser plasma in a wide range of photon energies from 1 keV to almost 1 MeV. This technique has been experimentally tested together with matrix-type semiconductor detectors. The plasma parameters have been measured under the action of a femtosecond pulse with a peak intensity of similar to 10(18) W/cm(2) on a metal (copper) target, and good agreement is demonstrated between data from different detector types in terms of determining both the spectrum shape and the coefficient of the laser-pulse energy conversion into an X-ray flux. The temperature of hot electrons has been estimated, and its value exceeds 100 keV. The X-ray flux of copper K-lines, which exceeds 10(9) per shot, has been determined. The advantages and drawbacks of techniques for measuring spectra in problems of laser-plasma interaction are considered.
引用
收藏
页码：971 / 976
页数：6
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