@Article{NEXTCollaboration_etal2020,
author="NEXT Collaboration
and Carcel, S.
and Carrion, J. V.
and Felkai, R.
and Kekic, M.
and Lopez-March, N.
and Martin-Albo, J.
and Martinez, A.
and Martinez-Lema, G.
and Mu{\~{n}}oz Vidal, J.
and Novella, P.
and Palmeiro, B.
and Querol, M.
and Romo-Luque, C.
and Sorel, M.
and Uson, A.
and Yahlali, N.",
title="Mitigation of backgrounds from cosmogenic Xe-137 in xenon gas experiments using He-3 neutron capture",
journal="Journal of Physics G",
year="2020",
publisher="Iop Publishing Ltd",
volume="47",
number="7",
pages="075001--17pp",
optkeywords="gaseous detectors; scintillators; scintillation and light emission processes; solid; gas and liquid scintillators",
abstract="Xe-136 is used as the target medium for many experiments searching for 0 nu beta beta. Despite underground operation, cosmic muons that reach the laboratory can produce spallation neutrons causing activation of detector materials. A potential background that is difficult to veto using muon tagging comes in the form of Xe-137 created by the capture of neutrons on Xe-136. This isotope decays via beta decay with a half-life of 3.8 min and a Q(beta) of similar to 4.16 MeV. This work proposes and explores the concept of adding a small percentage of He-3 to xenon as a means to capture thermal neutrons and reduce the number of activations in the detector volume. When using this technique we find the contamination from Xe-137 activation can be reduced to negligible levels in tonne and multi-tonne scale high pressure gas xenon neutrinoless double beta decay experiments running at any depth in an underground laboratory.",
optnote="WOS:000537753800001",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=4423), last updated on Wed, 18 May 2022 07:43:14 +0000",
issn="0954-3899",
doi="10.1088/1361-6471/ab8915",
opturl="https://arxiv.org/abs/2001.11147",
opturl="https://doi.org/10.1088/1361-6471/ab8915",
language="English"
}