Scintillation Properties and Internal Background Study of $^{40}$Ca$^{100}$MoO$_{4}$ Crystal Scintillators for Neutrino-Less Double Beta Decay Search

Scintillation properties and radioactive contamination of calcium molybdate scintillating crystals depleted in
$^{48}$
Ca and enriched in
$^{100}$
Mo (
$^{40}$
Ca
$^{100}$
MoO
$_{4}$
) have been studied to prepare a
$^{100}$
Mo-based neutrinoless double beta decay experiment. The prospects of a neutrinoless double beta decay experiment using
$^{40}$
Ca
$^{100}$
MoO
$_{4}$
crystals are discussed.