CSI(TL)-PHOTODIODE DETECTORS FOR SPECTROSCOPY AT LOW RADIATION-LEVELS

被引：14

作者：

KOTTHAUS, R

机构：

[1] Max-Planck-Institut für Physik, Werner-Heisenberg-Institut, Munich

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1993年 / 329卷 / 03期

关键词：

D O I：

10.1016/0168-9002(93)91278-U

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Some aspects of CsI(Tl)-photodiode detectors relevant for applications in low level radiation spectroscopy in the MeV energy range have been studied with a view to a sensitive search for the lepton number violating neutrinoless double beta decay of Mo-100. Energy resolutions of slightly less than 100 keV (FWHM), limited by electronic noise, have been obtained for crystal masses up to more than 3 kg. The improved energy resolution facilitates a very sensitive investigation of crystal contaminations with nuclides of the Th and U chains by spectroscopic analysis of alpha-decays. The cleanest crystal was free of U and Th contaminations at the detection limit of 0.27 alpha-decays per kg and h, a radiopurity well sufficient for applications in low level spectroscopy.

引用

页码：433 / 439

页数：7

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