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

页码：971 / 976

页数：6

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