Physical design of the positron induced Auger electron spectrometer

QIN Xiubo1; 2 WANG Ping1 JIANG Xiaopan1; 2 YU Runsheng1 WANG Baoyi1 WEI Long1 1

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Physical design of the positron induced Auger electron spectrometer

更新时间：2021-03-12

- Physical design of the positron induced Auger electron spectrometer
- NUCLEAR TECHNIQUES Vol. 32, Issue 4, (2009)
- 作者机构：
  
  1. 中国科学院高能物理研究所核分析技术重点实验室
  2. 中国科学院研究生院
- 作者简介：
- 基金信息：
  
  国家自然科学基金(10835006,60606011,10705031)资助
- DOI：
  CLC： O572.212
- Published：01 April 2009
- 稿件说明：
移动端阅览
[1]秦秀波,王平,姜小盼,于润升,王宝义,魏龙.正电子湮没诱发俄歇电子能谱装置的物理设计[J].核技术,2009,32(04):264-268.

QIN Xiubo1, 2 WANG Ping1 JIANG Xiaopan1, 2 YU Runsheng1 WANG Baoyi1 WEI Long1 1. Physical design of the positron induced Auger electron spectrometer[J]. Nuclear techniques, 2009, 32(4): 264-268.
[1]秦秀波,王平,姜小盼,于润升,王宝义,魏龙.正电子湮没诱发俄歇电子能谱装置的物理设计[J].核技术,2009,32(04):264-268. DOI：

QIN Xiubo1, 2 WANG Ping1 JIANG Xiaopan1, 2 YU Runsheng1 WANG Baoyi1 WEI Long1 1. Physical design of the positron induced Auger electron spectrometer[J]. Nuclear techniques, 2009, 32(4): 264-268. DOI：

摘要

与X射线、高能电子或中子激发俄歇电子能谱相比

正电子湮没诱发俄歇电子能谱（PAES）具有极表面选择性、高信噪比、低辐照损伤等特点。本文介绍北京慢正电子强束流的PAES装置

采用4×10-3T磁场对正电子和俄歇电子进行输运

强弱磁场梯度对俄歇电子进行平行化

法拉第筒对俄歇电子的能量进行调制

使得整个系统的能量分辨优于2eV。

Abstract

Positron Annihilation Induced Auger Electron Spectroscopy(PAES) has several advantages over those excited by X-rays

high energy electrons or neutrons

such as excellent surface selectivity

high signal-to-noise ratio

low radiation damage

etc.A physical design of time of flight PAES(TOF-PAES) apparatus based on the Beijing Intense Slow Positron Beam(BIPB) is described in this paper.The positrons and electrons are transported in a 4×10-3 T uniform magnetic field

and the gradient of magnetic field is designed to parallelize the Auger electrons emitted with 2π angle.The Auger electron energy is adjusted by a Faraday cage to optimize the energy resolution

which can be better than 2 eV.

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