Linear polarization sensitivity of SeGA detectors

被引：9
作者：
Miller, D. [1 ]
Chester, A.
Moeller, V.
Starosta, K.
Vaman, C.
Weisshaar, D.
机构：
[1] Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA
[2] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2007年 / 581卷 / 03期
基金：
美国国家科学基金会;
关键词：
segmented germanium detectors; polarization sensitivity; gamma-ray compton polarimeters;
D O I：
10.1016/j.nima.2007.07.141
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Parity is a key observable in nuclear spectroscopy. Linear polarization measurements of gamma-rays are a probe to access the parities of energy levels. Utilizing the segmentation of detectors in the Segmented Germanium Array (SeGA) at the NSCL and analyzing the positions of interaction therein allows the detectors to be used as Compton polarimeters. Unlike other segmented detectors, SeGA detectors are irradiated from the side to utilize the transversal segmentation for better Doppler corrections. Sensitivity in such an orientation has previously been untested. A linear polarization sensitivity Q approximate to 0.14 has been measured in the 350-keV energy range for SeGA detectors using (alpha-gamma correlations from a Cf-249 source. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：713 / 718
页数：6
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