Investigation of the Relation of Decay Time Differences and $\alpha-\beta$ Ratios for Newly Developed Scintillators

Recently, we found that the decay times between
$\alpha $
particles and
$\gamma $
photons were different for the recently developed scintillators. We also noticed that
$\alpha - \beta $
ratios were different for these scintillators. We expect that there might be a relation between these two properties. Thus, we measured the
$\alpha - \beta $
ratios and the decay time differences between
$\alpha $
particles and
$\gamma $
photons for the newly developed scintillators and investigated the relationship between them. We measured the
$\alpha - \beta $
ratios and decay times for five scintillators: (LaGd)
₂
Si
₂
O
₇
(LaGPS), Gd
₂
Si
₂
O
₇
(GPS), ceramic Gd
₃
Al
₂
Ga
₃
O
₁₂
(GGAG), ceramic (YGd)
₃
(GaAl)
₅
O
₁₂
:Ce (YGAG), and single-crystal Gd
₃
Al
₂
Ga
₃
O
₁₂
(GAGG). After the measurements, we estimated the correlation between the
$\alpha - \beta $
ratios and the decay time differences between
$\alpha $
particles and
$\gamma $
photons. Among these scintillators, as the
$\alpha - \beta $
ratios increased, decay time differences decreased with the correlation coefficient (
$R^{2}$
) of more than 0.8. We conclude that there was a negative correlation between
$\alpha - \beta $
ratios and the decay time differences between
$\alpha $
particles and
$\gamma $
photons for the measured newly developed scintillators.