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

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 r...

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Bibliographic Details
Published in:Review of scientific instruments 2024-10, Vol.95 (10)
Main Authors: Kraus, B. F., Kriz, E., McPoyle, S. P., Atay, K., Malko, S., Hill, K. W., Gao, Lan, Efthimion, P. C., Hollinger, R. C., Wang, Shoujun, King, J., Zahedpour Anaraki, S., Rocca, J. J.
Format: Article
Language:English
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Summary: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. 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.
ISSN:0034-6748
1089-7623
1089-7623
DOI:10.1063/5.0218767