Energies and intensities of thermal neutron capture γ rays from Cl, Al and Fe relative to N

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Abstract

A precise comparison has been made of the spectra of γ rays from chlorine and nitrogen. Chlorine has a 33 b thermal capture cross section and produces many intense γ rays between 1.5 and 8.6 MeV. These properties make it a convenient standard for energy and intensity calibrations. These results were used to calibrate the spectra from Fe and Al.

With the improved chlorine energies derived from the present results, consistency is obtained with recent high precision measurements of the iron doublet.

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The submitted manuscript has been authored under Contract no. EY-76-C-02-0016 with the Division of Basic Energy Sciences, U.S. Department of Energy. Accordingly, the U.S. Government retains a nonexclusive royalty-free license to publish or reproduce the published form of this contribution, or allow others to do so, for U.S. Government purposes.

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