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In-situ relative calibration of Bragg crystals with Monte Carlo line ratio analysis

Journal Article · · Review of Scientific Instruments
DOI:https://doi.org/10.1063/5.0218767· OSTI ID:2475828
 [1];  [2];  [1];  [1];  [1];  [1];  [1];  [1];  [3];  [3];  [3];  [3];  [3]
  1. Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
  2. McGill Univ., Montreal, QC (Canada)
  3. Colorado State Univ., Fort Collins, CO (United States)
+ Show Author Affiliations

X-ray line emission spectra can thoroughly characterize hot plasmas, especially when line shapes and ratios convey distinct aspects of plasma conditions. However, the high spectral resolution required for observing line shapes is often at odds with the large bandwidth required to observe many line ratios across a wide spectral range. One strategy to obtain high spectral resolution over a wide bandwidth is to use multiple crystals with calibrated reflectivity so that line intensities across different crystals can be compared. Here, we explore the use of a low-resolution, wide-bandwidth mica survey spectrometer to infer relative reflectivity of two high-resolution, narrow-bandwidth quartz crystals. Finally, a Monte Carlo error analysis determines comparable x-ray line ratios measured from both spectrometers, resulting in an in situ calibration factor and associated uncertainty for the relative reflectivity of the high-resolution crystals.

Research Organization:
Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Fusion Energy Sciences (FES); USDOE Laboratory Directed Research and Development (LDRD) Program
Grant/Contract Number:
SC0021246; AC02-09CH11466; SC0022129
OSTI ID:
2475828
Journal Information:
Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 10 Vol. 95; ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

References (9)

X-Ray Interactions: Photoabsorption, Scattering, Transmission, and Reflection at E = 50-30,000 eV, Z = 1-92 journal July 1993
Hybrid atomic models for spectroscopic plasma diagnostics journal May 2007
High-energy x-ray backlighter spectrum measurements using calibrated image plates journal February 2011
Challenges of x-ray spectroscopy in investigations of matter under extreme conditions journal March 2019
Dielectronic Satellite Spectra for Highly-Charged Helium-Like Ion Lines journal October 1972
Solid-Density Ion Temperature from Redshifted and Double-Peaked Stark Line Shapes journal November 2021
Ablating Ion Velocity Distributions in Short-Pulse-Heated Solids via X-Ray Doppler Shifts journal December 2022
An overview of EBIT data needed for experiments on laser-producedplasmas journal January 2008
085  PW laser operation at 33  Hz and high-contrast ultrahigh-intensity λ = 400  nm second-harmonic beamline journal January 2017

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Related Subjects

47 OTHER INSTRUMENTATION
Monte Carlo methods
X-ray spectroscopy
calibration methods
crystal optics
crystal spectroscopy
emission spectroscopy
signal-to-noise ratio