Interaction of a pulsed gas target with Nd-laser radiation and laser-produced plasma

被引：14

作者：

Ragozin, EN ^{[1
]}

Levashov, VE ^{[1
]}

Mednikov, KN ^{[1
]}

Pirozhkov, AS ^{[1
]}

Sasorov, PV ^{[1
]}

机构：

[1] PN Lebedev Phys Inst, Dept Spect, Moscow 119991, Russia

来源：

ADVANCES IN LABORATORY-BASED X-RAY SOURCES AND OPTICS III | 2002年 / 4781卷

关键词：

laser-produced plasma; pulsed Xe target; soft X-rays; aperiodic multilayer mirrors; stigmatic spectrograph; charge exchange;

D O I：

10.1117/12.450964

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A spectroscopic investigation was made of a debris-free soft X-ray radiation source driven by the pulses of a solid-state laser (0.4 J, 6 ns, 1.08 microns) focused in a pulsed xenon jet Source images at a wavelength of 180 A were obtained using a concave soft X-ray multilayer mirror. To obtain space-resolved source emission spectra above 125 A, advantage was taken of a stigmatic high-transmission broadband diffraction spectrograph. The spectrograph comprised a large-aperture transmission diffraction grating (1000 or 5000 lines/mm) and a novel aperiodic focusing normal-incidence multilayer mirror possessing a uniform reflectivity in the 125-250 Angstrom range. The yield of soft X-ray radiation was determined with the aid of a fast absolute-calibrated X-ray AXUV-5 photodiode. The photoabsorption in the peripheral gas-jet regions was found to play a significant role in the soft X-ray yield. Numerical model simulations were performed to elucidate the plasma dynamics.

引用

页码：17 / 25

页数：9

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