arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2402.09652astro-ph.IMnucl-exphysics.ins-det
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基于多层CdTe康普顿相机的核伽马射线偏振测量演示

Demonstration of nuclear gamma-ray polarimetry based on a multi-layer CdTe Compton Camera

S. Go, Y. Tsuzuki, H. Yoneda, Y. Ichikawa, T. Ikeda, N. Imai, K. Imamura, M. Niikura, D. Nishimura, R. Mizuno, S. Takeda, H. Ueno, S. Watanabe, T. Y. Saito, S. … 展开作者

S. Go, Y. Tsuzuki, H. Yoneda, Y. Ichikawa, T. Ikeda, N. Imai, K. Imamura, M. Niikura, D. Nishimura, R. Mizuno, S. Takeda, H. Ueno, S. Watanabe, T. Y. Saito, S. Shimoura, S. Sugawara, A. Takamine, T. Takahashi

AI总结:

本文利用多层CdTe康普顿相机和847-keV极化伽马射线进行实验,验证了其作为高偏振灵敏度和合理探测效率的可靠伽马射线偏振计的能力。

摘要:

为了探测和追踪原子核的结构变化,对具有确定自旋宇称指定的核能级进行系统研究非常重要。虽然线性偏振测量已被用于确定伽马射线跃迁的电磁性质,但由于探测系统的低效率,其适用范围受到强烈限制。多层碲化镉(CdTe)康普顿相机凭借高位置灵敏度和探测效率,可以成为用于核谱学的先进伽马射线偏振计。我们通过使用由$^{56}\rm{Fe}({\it p},{\it p'}γ)$反应产生的极化847-keV伽马射线,展示了该探测器作为可靠伽马射线偏振计的运行能力。通过结合实验数据和模拟计算,成功获得了该伽马射线的调制曲线。实现了显著的高偏振灵敏度,同时兼具合理的探测效率。基于所得结果,讨论了未来可能的伽马射线偏振测量。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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