Experimental study of 13C({\alpha},n)16O reactions in the Majorana Demonstrator calibration data
- MAJORANA Collaboration
- Arnquist, I. J.
- Avignone III, F. T.
- Barabash, A. S.
- Barton, C. J.
- Bhimani, K. H.
- Blalock, E.
- Bos, B.
- Busch, M.
- Buuck, M.
- Caldwell, T. S.
- Chan, Y-D.
- Christofferson, C. D.
- Chu, P. -H.
- Clark, M. L.
- Cuesta, C.
- Detwiler, J. A.
- Efremenko, Yu.
- Ejiri, H.
- Elliott, S. R.
- Giovanetti, G. K.
- Green, M. P.
- Gruszko, J.
- Guinn, I. S.
- Guiseppe, V. E.
- Haufe, C. R.
- Henning, R.
- Aguilar, D. Hervas
- Hoppe, E. W.
- Hostiuc, A.
- Kidd, M. F.
- Kim, I.
- Kouzes, R. T.
- Lannen V, T. E.
- Li, A.
- Lopez, A. M.
- Lopez-Castano, J. M.
- Martin, E. L.
- Martin, R. D.
- Massarczyk, R.
- Meijer, S. J.
- Oli, T. K.
- Othman, G.
- Paudel, L. S.
- Pettus, W.
- Poon, A. W. P.
- Radford, D. C.
- Reine, A. L.
- Rielage, K.
- Ruof, N. W.
- Tedeschi, D.
- Varner, R. L.
- Vasilyev, S.
- Wilkerson, J. F.
- Wiseman, C.
- Xu, W.
- Yu, C. -H.
- Zhu, B. X.
DOIAbstract
Neutron captures and delayed decays of reaction products are common sources of backgrounds in ultra-rare event searches. In this work, we studied $^{13}$C($\alpha,n)^{16}$O reactions induced by $\alpha$-particles emitted within the calibration sources of the \textsc{Majorana Demonstrator}. These sources are thorium-based calibration standards enclosed in carbon-rich materials. The reaction rate was estimated by using the 6129-keV $\gamma$-rays emitted from the excited $^{16}$O states that are populated when the incoming $\alpha$-particles exceed the reaction Q-value. Thanks to the excellent energy performance of the \textsc{Demonstrator}'s germanium detectors, these characteristic photons can be clearly observed in the calibration data. Fac...
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