# Study of $\mathrm{CdMoO_4}$ crystal for a neutrinoless double beta decay experiment with $\mathrm{{}^{116}Cd}$ and $\mathrm{{}^{100}Mo}$ nuclides

## TL;DR

This study evaluates the scintillation properties of $ ext{CdMoO}_4$ crystals and their potential use in neutrinoless double beta decay experiments, showing promising sensitivity improvements over current detectors.

## Contribution

The paper provides experimental data on $ ext{CdMoO}_4$ crystal scintillation properties and demonstrates its potential as a highly sensitive bolometric detector for double beta decay.

## Key findings

- $ ext{CdMoO}_4$ exhibits good scintillation properties for bolometer use.
- Monte Carlo simulations predict an order of magnitude higher sensitivity.
- Expected sensitivity surpasses current $etaeta$ decay limits.

## Abstract

The scintillation properties of a $\mathrm{CdMoO_4}$ crystal have been investigated experimentally. The fluorescence yields and decay times measured from 22 K to 300 K demonstrate that $\mathrm{CdMoO_4}$ crystal is a good candidate for an absorber for a bolometer readout, for both heat and scintillation signals. The results from Monte Carlo studies taking the backgrounds from $\mathrm{2\nu2\beta}$ of $\mathrm{{}_{42}^{100}Mo}$ ($\mathrm{{}_{48}^{116}Cd}$) and internal trace nuclides $\mathrm{{}^{214}Bi}$ and $\mathrm{{}^{208}Tl}$ into account show that the expected sensitivity of $\mathrm{CdMoO_4}$ bolometer for neutrinoless double beta decay experiment with an exposure of 100 $\mathrm{{kg}\cdot{years}}$ is one order of magnitude higher than those of the current sets of the $\mathrm{\lim{T^{0\nu\beta\beta}_{1/2}}}$ of $\mathrm{{}_{42}^{100}Mo}$ and $\mathrm{{}_{48}^{116}Cd}$.