Neutrinoless double-β decay (0νββ) searches typically involve large-scale experiments for which backgrounds can be complex. One possible source of background near the 0νββ signature in the observed spectra is γ rays arising from inelastic neutron scattering from the materials composing or surrounding the detector. In relation to searches for the 0νββ of 136Xe to 136Ba, such as the EXO-200 and KamLAND-Zen projects, inelastic neutron scattering γ-ray production cross sections for 136Xe and 134Xe are of importance for characterizing such γ rays that may inhibit the unambiguous identification of this yet-to-be-observed process. These cross sections have been measured at the University of Kentucky Accelerator Laboratory at neutron energies from 2.5 to 4.5 MeV.
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This material is based upon work supported by the US National Science Foundation under Grant No. PHY-1606890.
Peters, Erin E.; Ross, T. J.; Liu, S. H.; McEllistrem, Marcus T.; and Yates, Steven W., "Inelastic Neutron Scattering Cross Section Measurements for 134,136Xe of Relevance to Neutrinoless Double-β Decay Searches" (2017). Chemistry Faculty Publications. 107.