Pulse-shape discrimination with Cs2HfCl6 crystal scintillator

被引：18

作者：

Cardenas, C. ^{[1
,2
]}

Burger, A. ^{[1
,2
]}

Goodwin, B. ^{[1
]}

Groza, M. ^{[1
]}

Laubenstein, M. ^{[3
]}

Nagorny, S. ^{[3
,4
]}

Rowe, E. ^{[1
]}

机构：

[1] Fisk Univ, Dept Life & Phys Sci, Nashville, TN 37208 USA

[2] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA

[3] Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, I-67100 Assergi, Italy

[4] Gran Sasso Sci Inst, I-67100 Laquila, Italy

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2017年 / 869卷

基金：

美国国家科学基金会;

关键词：

Cs2HfCl6 crystal scintillator; alpha decay Hf isotopes; Pulse-shape discrimination; Quenching factor; ORGANIC SCINTILLATORS; DECAY; LUMINESCENCE;

D O I：

10.1016/j.nima.2017.06.041

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The results of investigation into cesium hafnium chloride (Cs2HfCl6) scintillating crystals as a promising detector to search for rare nuclear processes occurring in Hf isotopes is reported. The light output, quenching factor, and pulse-shape characteristics have been investigated at room temperature. The scintillation response of the crystal induced by alpha-particles and gamma-quanta were studied to determine possibility of particle discrimination. Using the optimal filter method we obtained clear separation between signals with a factor of merit (FOM) = 9.3. This indicates that we are able to fully separate signals originating from alpha-particles and gamma-quanta. Similar fruitful discrimination power was obtained by applying the mean time method (FOM = 7) and charge integration method (FOM = 7.5). The quenching factor for collimated 4 MeV alpha-particles is found to be 0.36, showing that alpha-particles generate more than a third of the light compared to gamma-quanta at the same energy. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：63 / 67

页数：5

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