Investigation of spectra unfolded for a filtered x-ray diode array with improved smoothness

被引：12

作者：

Li, Jing ^{[1
,2
]}

Huang, Xian-Bin ^{[2
]}

Zhang, Si-Qun ^{[2
]}

Yang, Li-Bing ^{[2
]}

Xie, Wei-Ping ^{[2
]}

Pu, Yi-Kang ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Engn Phys, Beijing 100084, Peoples R China

[2] CAEP, Inst Fluid Phys, Mianyang 621900, Peoples R China

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2009年 / 80卷 / 06期

基金：

中国国家自然科学基金;

关键词：

diodes; plasma diagnostics; plasma X-ray sources; splines (mathematics); X-ray spectra; Z pinch; Z-PINCH; SPECTROMETER; TIME; DIAGNOSTICS; RESOLUTION; PLASMAS; POWER; MJ;

D O I：

10.1063/1.3157042

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

An unfolding algorithm using parabolic B-splines to smoothly reconstruct the soft x-ray spectra from the measurements of a filtered x-ray diode array is proposed. This array has been fabricated for the study of the soft x ray emitted by Z-pinch plasma. Unfolding results show that for the simulated noise-free blackbody spectra with temperature ranging from 20 to 250 eV, both the spectra and the total power are accurately recovered. Typical experimental waveforms along with the unfolded spectra and total power of x rays are presented. Possible defects due to the adoption of parabolic B-splines instead of conventionally used histograms are discussed.

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