Abstract

To detect and track structural changes in atomic nuclei, the systematic study of nuclear levels with firm spin-parity assignments is important. While linear polarization measurements have been applied to determine the electromagnetic character of gamma-ray transitions, the applicable range is strongly limited due to the low efficiency of the detection system. The multi-layer Cadmium-Telluride (CdTe) Compton camera can be a state-of-the-art gamma-ray polarimeter for nuclear spectroscopy with the high position sensitivity and the detection efficiency. We demonstrated the capability to operate this detector as a reliable gamma-ray polarimeter by using polarized 847-keV gamma rays produced by the 56Fe(p,pγ) reaction. By combining the experimental data and simulated calculations, the modulation curve for the gamma ray was successfully obtained. A remarkably high polarization sensitivity was achieved, compatible with a reasonable detection efficiency. Based on the obtained results, a possible future gamma-ray polarimetery is discussed.

Details

Title
Demonstration of nuclear gamma-ray polarimetry based on a multi-layer CdTe Compton camera
Author
Go, S. 1 ; Tsuzuki, Y. 2 ; Yoneda, H. 3 ; Ichikawa, Y. 4 ; Ikeda, T. 5 ; Imai, N. 6 ; Imamura, K. 1 ; Niikura, M. 5 ; Nishimura, D. 7 ; Mizuno, R. 8 ; Takeda, S. 9 ; Ueno, H. 1 ; Watanabe, S. 10 ; Saito, T. Y. 11 ; Shimoura, S. 12 ; Sugawara, S. 7 ; Takamine, A. 1 ; Takahashi, T. 13 

 RIKEN Cluster for Pioneering Research, RIKEN, Wako, Japan (GRID:grid.7597.c) (ISNI:0000 0000 9446 5255); RIKEN Nishina Center for Accelerator-Based Science, RIKEN, Wako, Japan (GRID:grid.474691.9) 
 RIKEN Nishina Center for Accelerator-Based Science, RIKEN, Wako, Japan (GRID:grid.474691.9); The University of Tokyo, Department of Physics, Tokyo, Japan (GRID:grid.26999.3d) (ISNI:0000 0001 2169 1048); The University of Tokyo, Kavli Institute for the Physics and Mathematics of the Universe (WPI), Chiba, Japan (GRID:grid.26999.3d) (ISNI:0000 0001 2151 536X) 
 RIKEN Nishina Center for Accelerator-Based Science, RIKEN, Wako, Japan (GRID:grid.474691.9); Julius-Maximilians-Universität Würzburg, Lehrstuhl für Astronomie, Fakultät für Physik und Astronomie, Institut für Theoretische Physik und Astrophysik, Würzburg, Germany (GRID:grid.8379.5) (ISNI:0000 0001 1958 8658) 
 Kyushu University, Department of Physics, Fukuoka, Japan (GRID:grid.177174.3) (ISNI:0000 0001 2242 4849) 
 RIKEN Nishina Center for Accelerator-Based Science, RIKEN, Wako, Japan (GRID:grid.474691.9) 
 The University of Tokyo, Center for Nuclear Study, Wako, Japan (GRID:grid.26999.3d) (ISNI:0000 0001 2169 1048) 
 Tokyo City University, Department of Natural Sciences, Tokyo, Japan (GRID:grid.458395.6) (ISNI:0000 0000 9587 793X) 
 The University of Tokyo, Department of Physics, Tokyo, Japan (GRID:grid.26999.3d) (ISNI:0000 0001 2169 1048) 
 The University of Tokyo, Kavli Institute for the Physics and Mathematics of the Universe (WPI), Chiba, Japan (GRID:grid.26999.3d) (ISNI:0000 0001 2151 536X) 
10  Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Kanagawa, Japan (GRID:grid.450279.d) (ISNI:0000 0000 9989 8906) 
11  The University of Tokyo, Center for Nuclear Study, Wako, Japan (GRID:grid.26999.3d) (ISNI:0000 0001 2169 1048); RIKEN, Atomic, Molecular, and Optical Physics Laboratory, Wako, Japan (GRID:grid.7597.c) (ISNI:0000 0000 9446 5255) 
12  RIKEN Nishina Center for Accelerator-Based Science, RIKEN, Wako, Japan (GRID:grid.474691.9); The University of Tokyo, Center for Nuclear Study, Wako, Japan (GRID:grid.26999.3d) (ISNI:0000 0001 2169 1048) 
13  The University of Tokyo, Department of Physics, Tokyo, Japan (GRID:grid.26999.3d) (ISNI:0000 0001 2169 1048); The University of Tokyo, Kavli Institute for the Physics and Mathematics of the Universe (WPI), Chiba, Japan (GRID:grid.26999.3d) (ISNI:0000 0001 2151 536X) 
Pages
2573
Publication year
2024
Publication date
2024
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2924108377
Copyright
© The Author(s) 2024. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.