Optimization of soft x-ray line emission from laser-produced carbon plasma with laser intensity

被引：6

作者：

Chowdhury, A ^{[1
]}

Joshi, RA

Gupta, GP

Naik, PA

Gupta, PD

机构：

[1] Ctr Adv Technol, Laser Plasma Div, Indore 452013, India

[2] Bhabha Atom Res Ctr, Laser & Plasma Technol Div, Bombay 400085, Maharashtra, India

来源：

PRAMANA-JOURNAL OF PHYSICS | 2003年 / 61卷 / 06期

关键词：

XUV spectroscopy; laser-produced plasmas; flat-field spectrograph; Nd : phosphate glass laser;

D O I：

10.1007/BF02704407

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Absolute measurement for He-alpha resonance (1s(2) S-1(0)-1s2p (1)p(1), at 40.2 Angstrom) line emission from a laser-produced carbon plasma has been studied as a function of laser intensity. The optimum laser intensity is found to be approximate to1.3 x 10(12) W/cm(2) for the maximum emission of 3.2 x 10(13) photons sr(-1) pulse(-1). Since this line lies in the water window spectral region, it has potential application in x-ray microscopic imaging of biological sample in wet condition. Theoretical calculation using corona model for the emission of this line is also carried out with appropriate ionization and radiative recombination rate coefficients.

引用

页码：1121 / 1128

页数：8

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