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

Journal Article · Mon Jun 15 00:00:00 EDT 2009 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.3157042· OSTI ID:22053576

Jing, Li ^[1]; Xianbin, Huang; Siqun, Zhang; Libing, Yang; Weiping, Xie ^[2]; Yikang, Pu ^[1]

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1. Department of Engineering Physics, Tsinghua University, Beijing 100084 (China)
2. Institute of Fluid Physics, CAEP, Mianyang 621900 (China)

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.

• OSTI ID: 22053576
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 6 Vol. 80; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALGORITHMS
EV RANGE
MATHEMATICS
PINCH EFFECT
PLASMA
ROUGHNESS
SIMULATION
SOFT X RADIATION
SPECTRA UNFOLDING
WAVE FORMS
X-RAY SPECTRA