波谱学杂志

• 研究论文 • 上一篇    下一篇

在体EPR专用磁场装置性能的改进

袁清泉,郭俊旺,丛建波,董国福,吴可*   

  1. 军事医学科学院 放射与辐射医学研究所,北京 100850
  • 收稿日期:2012-10-18 修回日期:2012-11-27 出版日期:2013-06-05 发布日期:2013-06-05
  • 作者简介:袁清泉(1988-),男,吉林延边人,硕士研究生,研究方向为自由基生物物理. *通讯联系人:吴可,电话:010-66931249,E-mail: wuk315@163.com.
  • 基金资助:

    军队“十二五”医学科研基金资助项目.

Improvement of the Magnet System in EPR Spectrometer for In Vivo Tooth Dosimetry

YUAN Qing-quan, GUO Jun-wang, CONG Jian-bo, DONG Guo-fu, WU Ke*   

  1. Beijing Institute of Radiation Medicine, Beijing 100850, China
  • Received:2012-10-18 Revised:2012-11-27 Online:2013-06-05 Published:2013-06-05
  • About author:Wu Ke,Tel: 010-66931249,E-mail: wuk315@163.com.
  • Supported by:

    军队“十二五”医学科研基金资助项目.

摘要:

为测试在体EPR牙齿辐射剂量测量专用磁场装置,开展了初步性能试验. 针对扫描磁场非线性造成谱线的畸变情况,对在体EPR专用磁场装置性能进行了改进,给出了一种校正扫描磁场非线性的实现方法,通过对扫描磁场驱动电流进行反向刻度校正,可有效改善EPR谱线的畸变情况. 初步试验进一步证明了水平磁场在体测量方案的可行性,磁场装置性能的改进为实现X波段EPR辐射剂量在体测量向实际应用奠定基础.

关键词: 电子顺磁共振(EPR), 在体测量, 扫描磁场, 非线性校正

Abstract:

Preliminary tests were carried out to evaluate the performance of the magnet system in an EPR spectrometer dedicated for in vivo tooth dosimetry. To reduce spectrum distortion, a method was proposed to rectify the nonlinearity of the scanning field via correcting of the driving current. The results of preliminary tests also demonstrated the feasibility of using horizontal magnet field for in vivo EPR.

Key words: EPR, dose measurement, scanning field, nonlinear correction

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