Determination of uranium particles from swipe sample

YANG Tianli LIU Xuemei LIU Zhao TANG Lei LONG Kaiming

doi:null

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Determination of uranium particles from swipe sample

更新时间：2021-03-12

- Determination of uranium particles from swipe sample
- NUCLEAR TECHNIQUES Issue 3, (2007)
- 作者机构：
  
  1. 中国工程物理研究院核物理与化学研究所
  2. 中国工程物理研究院核物理与化学研究所,绵阳,621900
- 作者简介：
- 基金信息：
  
  中国工程物理研究院科学技术面上基金(20050760)资助
- DOI：
  CLC： TL27
- Published：01 March 2007
- 稿件说明：
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[1]杨天丽,刘雪梅,刘钊,汤磊,龙开明.擦拭样品中铀微粒甄别技术的研究[J].核技术,2007(03):208-212.

YANG Tianli LIU Xuemei LIU Zhao TANG Lei LONG Kaiming. Determination of uranium particles from swipe sample[J]. Nuclear techniques, 2007, (3): 208-212.
[1]杨天丽,刘雪梅,刘钊,汤磊,龙开明.擦拭样品中铀微粒甄别技术的研究[J].核技术,2007(03):208-212. DOI：

YANG Tianli LIU Xuemei LIU Zhao TANG Lei LONG Kaiming. Determination of uranium particles from swipe sample[J]. Nuclear techniques, 2007, (3): 208-212. DOI：

摘要

基于裂变径迹原理对擦拭样品中微米量级铀微粒筛选技术进行了研究。研究内容包括擦拭样品与载体分离、样品在裂变径迹片上沉积、样品辐照以及化学刻蚀、铀微粒筛选等。文章中对各实验环节进行细致描述和讨论。研究发现:（1）以无尘滤纸、脱脂棉、Texwipe牌TX304型棉布为擦拭载体的样品经过400℃6 h灰化为较好的分离方法;（2）经热中子辐照和化学刻蚀后裂变径迹主要呈星状和坑状。其中235U含量高的微粒对应于坑状径迹

含量低的微粒对应于星状径迹;（3）采用新的定位方法能够筛选出铀微粒。

Abstract

Based on the fission track technique

the determination of uranium particles from swipe samples has been studied.This work includes the separation of particles

disposing of the particle sample on the surface of nuclear track detector

irradiation of the sample by thermal neutrons and chemical etching

selection of uranium particles and so on.There are the following results obtained.First

the ashing in 400℃ furnace for 6 hours is a useful way for ashless filter

cotton and TX304 cloth which are the sample’s carriers during separation process.Second

after irradiation and chemical etching

the fission tracks on the nuclear track detector

which have either star shape or crater shape

can be seen clearly under the microscope.The uranium particles with less 235U may correspond to the star shape tracks and those with more 235U correspond to the crater shape tracks.Third

the uranium particle can be identified and selected exactly through the marks made by special tool in small area.

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Related Institution

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