Quantitative extraction of spectral line intensities and widths from x-ray spectra recorded with gated microchannel plate detectors

Dunham, Greg; Bailey, J. E.; Rochau, G. A.; Lake, P. W.; Nielsen-Weber, L. B.

doi:10.1063/1.2748674

Quantitative extraction of spectral line intensities and widths from x-ray spectra recorded with gated microchannel plate detectors

Journal Article · Wed Jun 27 00:00:00 EDT 2007 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.2748674· OSTI ID:1427012

Dunham, Greg ^[1]; Bailey, J. E. ^[2]; Rochau, G. A. ^[2]; Lake, P. W. ^[2]; Nielsen-Weber, L. B. ^[1]

Ktech Corp., Albuquerque, NM (United States)
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Plasma spectroscopy requires determination of spectral line intensities and widths. At Sandia National Laboratories Z facility we use elliptical crystal spectrometers equipped with gated microchannel plate detectors to record time and space resolved spectra. We collect a large volume of data typically consisting of five to six snapshots in time and five to ten spectral lines with 30 spatial elements per frame, totaling to more than 900 measurements per experiment. Also, this large volume of data requires efficiency in processing. We have addressed this challenge by using a line fitting routine to automatically fit each spectrum using assumed line profiles and taking into account photoelectron statistics to efficiently extract line intensities and widths with uncertainties. We verified that the random data noise obeys Poisson statistics. Rescale factors for converting film exposure to effective counts required for understanding the photoelectron statistics are presented. An example of the application of these results to the analysis of spectra recorded in Z experiments is presented in this paper.

Research Organization:: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC04-94AL85000

OSTI ID:: 1427012

Alternate ID(s):: OSTI ID: 20953463

Report Number(s):: SAND2007--0241J; 524295

Journal Information:: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 6 Vol. 78; ISSN 0034-6748

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

References (11)

Principles of Plasma Spectroscopy Griem, Hans R. https://doi.org/10.1017/CBO9780511524578	book	January 1997
High speed proximity focused X-ray cameras Kilkenny, J. D. Laser and Particle Beams, Vol. 9, Issue 1 https://doi.org/10.1017/S0263034600002330	journal	March 1991
X-ray imaging of targets irradiated by the Nike KrF laser Brown, C.; Seely, J.; Feldman, U. Review of Scientific Instruments, Vol. 68, Issue 1 https://doi.org/10.1063/1.1147796	journal	January 1997
Dynamic hohlraum driven inertial fusion capsules Slutz, S. A.; Bailey, J. E.; Chandler, G. A. Physics of Plasmas, Vol. 10, Issue 5 https://doi.org/10.1063/1.1565117	journal	May 2003
Measurements of the counting statistics on RAR-2497 and DEF x-ray film Dunham, Greg; Rochau, G. A.; Lake, P. Review of Scientific Instruments, Vol. 75, Issue 10 https://doi.org/10.1063/1.1788865	journal	October 2004
Time- and space-resolved elliptical crystal spectrometers for high energy density physics research Lake, P. W.; Bailey, J. E.; Rochau, G. A. Review of Scientific Instruments, Vol. 75, Issue 10 https://doi.org/10.1063/1.1788866	journal	October 2004
Dynamic hohlraum radiation hydrodynamics Bailey, J. E.; Chandler, G. A.; Mancini, R. C. Physics of Plasmas, Vol. 13, Issue 5 https://doi.org/10.1063/1.2177640	journal	May 2006
Twin-elliptical-crystal time- and space-resolved soft x-ray spectrometer Lake, P. W.; Bailey, J. E.; Rochau, G. A. Review of Scientific Instruments, Vol. 77, Issue 10 https://doi.org/10.1063/1.2227444	journal	October 2006
Energy dependent sensitivity of microchannel plate detectors Rochau, G. A.; Bailey, J. E.; Chandler, G. A. Review of Scientific Instruments, Vol. 77, Issue 10 https://doi.org/10.1063/1.2336461	journal	October 2006
Measurement and analysis of x-ray absorption in Al and MgF 2 plasmas heated by Z -pinch radiation Rochau, Gregory A.; Bailey, J. E.; MacFarlane, J. J. Physical Review E, Vol. 72, Issue 6 https://doi.org/10.1103/PhysRevE.72.066405	journal	December 2005
Hot Dense Capsule-Implosion Cores Produced by Z -Pinch Dynamic Hohlraum Radiation Bailey, J. E.; Chandler, G. A.; Slutz, S. A. Physical Review Letters, Vol. 92, Issue 8, Article No. 085002 https://doi.org/10.1103/PhysRevLett.92.085002	journal	February 2004

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Diagnosis of x-ray heated Mg/Fe opacity research plasmas Bailey, J. E.; Rochau, G. A.; Mancini, R. C. Review of Scientific Instruments, Vol. 79, Issue 11 https://doi.org/10.1063/1.3020710	journal	November 2008

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Quantitative extraction of spectral line intensities and widths from x-ray spectra recorded with gated microchannel plate detectors

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