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

Understand

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.