High-energy x-ray backlighter spectrum measurements using calibrated image plates

被引：153

作者：

Maddox, B. R. ^{[1
]}

Park, H. S. ^{[1
]}

Remington, B. A. ^{[1
]}

Izumi, N. ^{[1
]}

Chen, S. ^{[1
]}

Chen, C. ^{[1
]}

Kimminau, G. ^{[2
]}

Ali, Z. ^{[3
]}

Haugh, M. J. ^{[3
]}

Ma, Q. ^{[4
]}

机构：

[1] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[2] Univ Oxford, Dept Phys, Clarendon Lab, Oxford OX1 3PU, England

[3] Natl Secur Technol LLC, Livermore, CA 94550 USA

[4] Argonne Natl Lab, DND CAT, Argonne, IL 60439 USA

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2011年 / 82卷 / 02期

关键词：

DEPENDENCE;

D O I：

10.1063/1.3531979

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The x-ray spectrum between 18 and 88 keV generated by a petawatt laser driven x-ray backlighter target was measured using a 12-channel differential filter pair spectrometer. The spectrometer consists of a series of filter pairs on a Ta mask coupled with an x-ray sensitive image plate. A calibration of Fuji (TM) MS and SR image plates was conducted using a tungsten anode x-ray source and the resulting calibration applied to the design of the Ross pair spectrometer. Additionally, the fade rate and resolution of the image plate system were measured for quantitative radiographic applications. The conversion efficiency of laser energy into silver K alpha x rays from a petawatt laser target was measured using the differential filter pair spectrometer and compared to measurements using a single photon counting charge coupled device. (C) 2011 American Institute of Physics. [doi:10.1063/1.3531979]

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