Speaker
Description
Recently there has been considerable interest in the development of crystal scintillators of the Cs$_2$MCl$_6$ family of metal hexachlorides (M = Hf or Zr) due to their exceptional properties: a high light yield (up to 35000 photons/ MeV ), good linearity in the energy response, excellent energy resolution ($< 3.5\%$ at 662 keV in the best configuration) and excellent ability to discriminate the pulse shape (PSD) between $\gamma$($\beta$) and $\alpha$ particles. In particular, an experiment was performed using three Cs$_2$ZrCl$_6$ (CZC) crystals and one Cs$_2$HfCl$_6$ (CHC) crystal scintillator in optimized geometry. Low-background measurements have been carried out deep underground at the DAMA/CRYS setup of LNGS. The crystal growth technique, raw material purification, and post-growth material treatment are discussed. Moreover, the three CZC crystals were grown using starting materials with different purities to study their resulting characteristics and were encapsulated using a silicone-based sealant. Result on the $\alpha$ decay to the ground state of $^{174}$Hf is also presented here together with the future perspectives of these measurements.
Details
Alice Leoncini, University of Rome Tor Vergata
| Internet talk | Maybe |
|---|---|
| Is this an abstract from experimental collaboration? | Yes |
| Name of experiment and experimental site | DAMA/CRYS, LNGS |
| Is the speaker for that presentation defined? | Yes |
