Demonstration of nuclear gamma-ray polarimetry based on a multi-layer CdTe Compton Camera
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arXiv
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| Autori principali: | , , , , , , , , , , , , , , , , , |
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| Natura: | Preprint |
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2024
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| author | Go, S. Tsuzuki, Y. Yoneda, H. Ichikawa, Y. Ikeda, T. Imai, N. Imamura, K. Niikura, M. Nishimura, D. Mizuno, R. Takeda, S. Ueno, H. Watanabe, S. Saito, T. Y. Shimoura, S. Sugawara, S. Takamine, A. Takahashi, T. |
| author_facet | Go, S. Tsuzuki, Y. Yoneda, H. Ichikawa, Y. Ikeda, T. Imai, N. Imamura, K. Niikura, M. Nishimura, D. Mizuno, R. Takeda, S. Ueno, H. Watanabe, S. Saito, T. Y. Shimoura, S. Sugawara, S. Takamine, A. Takahashi, T. |
| contents | 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 $^{56}\rm{Fe}({\it p},{\it p'}γ)$ 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_09652 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Demonstration of nuclear gamma-ray polarimetry based on a multi-layer CdTe Compton Camera Go, S. Tsuzuki, Y. Yoneda, H. Ichikawa, Y. Ikeda, T. Imai, N. Imamura, K. Niikura, M. Nishimura, D. Mizuno, R. Takeda, S. Ueno, H. Watanabe, S. Saito, T. Y. Shimoura, S. Sugawara, S. Takamine, A. Takahashi, T. Instrumentation and Methods for Astrophysics Nuclear Experiment Instrumentation and Detectors 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 $^{56}\rm{Fe}({\it p},{\it p'}γ)$ 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. |
| title | Demonstration of nuclear gamma-ray polarimetry based on a multi-layer CdTe Compton Camera |
| topic | Instrumentation and Methods for Astrophysics Nuclear Experiment Instrumentation and Detectors |
| url | https://arxiv.org/abs/2402.09652 |