3 years ago

Neutrinoless Double Beta Decay with $^{82}$SeF$_6$ and Direct Ion Imaging.

D.R. Nygren, Y. Mei, N. Lopez-march, J. Renner, F. Psihas, B.J.P. Jones

We present a new neutrinoless double beta decay concept: the high pressure selenium hexafluoride gas time projection chamber. Combining techniques pioneered in high pressure xenon gas such as topological discrimination, with the high Q-value afforded by double beta decay isotope $^{82}$Se, a promising new detection technique is outlined. Lack of free electrons in SeF$_6$ mandates the use of an ion TPC. The microphysics of ion production and drift, which have many nuances, are explored. Background estimates are produced suggesting such a detector may achieve background indices of better than 1 count per ton per year in the region of interest at the 100~kg scale, and still better at the ton-scale.

Publisher URL: http://arxiv.org/abs/1801.04513

DOI: arXiv:1801.04513v1

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