面向低能量电子高分辨光谱的过渡边沿传感器
仪器与探测器
2026-02-26 v1
摘要
本文报告了利用能量边沿传感器 (TES) 检测 100 eV 动能范围内电子的能量分辨率研究。TES 为 Ti-Au 双层结构，有效面积为 ，临界温度约为 80 mK。电子源基于位于低温器内的垂直排列多壁碳纳米管，通过场发射产生电子。对于动能在 (92 - 99) eV 范围内的电子，我们获得完全吸收电子的高斯能量分辨率为 (0.479 0.041 0.055) eV。考虑到峰值全宽半高 (FWHM)，对应的分辨率为 (1.44 0.17 0.27) eV。前者相对于先前结果提升了 (46 - 60)%，主要归因于减小 TES 有效面积。后者则超过 20 倍，主要归功于减小电子源发射面积，这显著抑制了电子在靠近 TES 附近的背散射。这些结果标志着低能量电子高精度光谱的重要里程碑，这是 PTOLEMY 实验的关键目标之一。
引用
@article{arxiv.2602.21694,
title = {Towards Low-Energy Electron High-Resolution Spectroscopy with Transition-Edge Sensors},
author = {R. Ammendola and A. Apponi and G. Benato and M. G. Betti and R. Biondi and P. Bos and M. Cadeddu and A. Casale and O. Castellano and G. Cavoto and L. Cecchini and E. Celasco and M. Chirico and W. Chung and A. G. Cocco and A. P. Colijn and B. Corcione and N. D'Ambrosio and M. D'Incecco and G. De Bellis and M. De Deo and N. de Groot and A. Esposito and M. Farino and S. Farinon and A. D. Ferella and L. Ferro and L. Ficcadenti and G. Galbato Muscio and S. Gariazzo and H. Garrone and F. Gatti and F. Malnati and G. Mangano and L. E. Marcucci and C. Mariani and J. Mead and G. Menichetti and M. Messina and E. Monticone and M. Naafs and S. Nagorny and V. Narcisi and F. Pandolfi and R. Pavarani and C. Pepe and C. Perez de los Heros and O. Pisanti and F. M. Pofi and A. D. Polosa and I. Rago and M. Rajteri and S. Ritarossi and N. Rossi and A. Ruocco and G. Salina and A. Santucci and M. Sestu and A. Tan and V. Tozzini and C. G. Tully and I. van Rens and F. Virzi and G. Visser and M. Viviani},
journal= {arXiv preprint arXiv:2602.21694},
year = {2026}
}
备注
6 pages, 4 figures