X-ray Emissions in Measurements of the Neutron Capture Cross Sections for the Production of ¹⁹⁷Hg and ¹⁹⁷Pt and Scoping the Science Parameter Space of Future X-ray Astrophysics Calorimeter Missions Public Deposited

http://ir.library.oregonstate.edu/concern/undergraduate_thesis_or_projects/r207tt92p

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  • A spectral fitting routine was developed to analyze X-ray emissions in neutron capture decay processes that produce ¹⁹⁷Hg and ¹⁹⁷Pt. Through correcting for X-ray emissions, the 77.3 keV γ gamma ray intensities were analyzed. The thermal cross sections for the production of ¹⁹⁷Hg and ¹⁹⁷Pt were found to be 2088 +/- 133 b and 0.62 +/- 5 b, respectively. Similarly, The resonance integrals for the production of ¹⁹⁷Hg and ¹⁹⁷Pt agree with some historical measurements and disagree with others. These cross section values agree with those determined through the analysis of the 191 keV γ gamma ray produced in the neutron capture processes that produce ¹⁹⁷Hg and ¹⁹⁷Pt. A computational routine, 'Drive XSPEC', was developed to help determine the feasibility of pursuing various science goals with future X-ray calorimeter spectrometer missions, most significantly the NASA Advanced X-ray Spectroscopic Imaging Observatory (AXSIO) mission concept, in anticipation of a Mission Design Laboratory (MDL) investigation. 'Drive XSPEC' can run large scale spectral simulations, which can be applied to developing research proposals, performing data analysis, and comparing instrument designs.
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