Segmented YSO scintillation detectors as a new ${\rm \beta}$-implant detection tool for decay spectroscopy in fragmentation facilities
2019
A newly developed segmented YSO scintillator detector was implemented for the first time at RI-beam Factory at RIKEN Nishina Center as an implantation-decay counter. The experiment demonstrates that this detector is a viable alternative to conventional silicon-strip detectors with its good timing resolution and high detection efficiency for ${\rm \beta}$ particles. A Position Sensitive Photo-Multiplier Tube (PSPMT) is coupled with a $48\times48$ segmented YSO crystal. To demonstrate its capabilities, a known short lived isomer in $^{76}$Ni and the ${\rm \beta}$ decay of $^{74}$Co was measured by implanting those ions into the YSO detector. The half-lives and ${\rm \gamma}$ rays observed in this work are consistent with the known values. The ${\rm \beta}$-ray detection efficiency is more than 80~\% for the decay of $^{74}$Co.
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