用于正电子湮没谱学的集成抗电子学器件
Integrated anti-electronics for positron annihilation spectroscopy
AI总结：
针对正电子湮没谱学现有成像依赖光栅扫描的局限，提出采用齐纳二极管二维阵列作有源慢化体的集成微电子器件，可塑形正电子束并实现高时空分辨的PALS与PAS成像。
摘要：
目前，利用正电子湮没谱学（Positron Annihilation Spectroscopy, PAS）对样品特征成像需通过光栅扫描实现，即用高度聚焦的正电子束扫描样品表面。但任意形状的束流（塑形束）可支持更灵活的单像素成像（single-pixel imaging, SPI）技术应用。本文介绍了一种采用齐纳二极管（Zener diodes）二维阵列作为有源正电子慢化体的微电子器件设计，能够以6μm分辨率塑形正电子束。再发射的正电子经微型静电透镜系统加速射向样品，可达100nm分辨率。该器件90ps的快速开启时间和250ps的关断时间，可实现兼具高时空分辨率的顶尖正电子湮没寿命谱学（positron annihilation lifetime spectroscopy, PALS）与PAS成像。
英文摘要：
Imaging the features of a sample using Positron Annihilation Spectroscopy (PAS) is currently achieved by rastering, i.e. by scanning the sample surface with a sharply focused positron beam. However, a beam of arbitrary shape (sculpted beam) would allow the application of more versatile single-pixel imaging (SPI) techniques. I introduce the design of a microelectronic device employing a 2D array of Zener diodes as an active positron moderator, capable of sculpting positron beams with 6um resolution. The re-emitted positrons are accelerated towards the sample through a miniaturised electrostatic lens system and reaching 100nm resolution. The fast switch-on (90ps) and switch-off (250ps) time of the device would enable state-of-the-art positron annihilation lifetime spectroscopy (PALS) and PAS imaging with high spatial and temporal resolution.
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。
