(EC+β<sup>+</sup>) decay study of <sup>130</sup>Ce and it’s radiochemical separation

ZHANG Tianmei  1  DU Jinzhou  2  XU Shuwei  1  XIE Yuanxiang  1  LI Zhankui  1  1

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(EC+β⁺) decay study of ¹³⁰Ce and it’s radiochemical separation

更新时间：2021-03-12

- (EC+β⁺) decay study of ¹³⁰Ce and it’s radiochemical separation
- NUCLEAR TECHNIQUES Issue 1, (2002)
- 作者机构：
  
  1. 中国科学院近代物理研究所
  2. 兰州大学现代物理系
  3. 中国科学院近代物理研究所,兰州,730000
- 作者简介：
- 基金信息：
  
  国家自然科学基金 (19775 0 5 5 );中国科学院“八五”重大项目课题 (KJ85 - )资助
- DOI：
  CLC： O615.11
- Published：01 January 2002
- 稿件说明：
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[1]张天梅,杜金洲,徐树威,谢元祥,李占魁.~(130)Ce(EC+β~+)衰变研究及其放射化学分离[J].核技术,2002(01):9-14.

ZHANG Tianmei 1 DU Jinzhou 2 XU Shuwei 1 XIE Yuanxiang 1 LI Zhankui 1 1. (EC+β⁺) decay study of ¹³⁰Ce and it’s radiochemical separation[J]. Nuclear techniques, 2002, (1): 9-14.
[1]张天梅,杜金洲,徐树威,谢元祥,李占魁.~(130)Ce(EC+β~+)衰变研究及其放射化学分离[J].核技术,2002(01):9-14. DOI：

ZHANG Tianmei 1 DU Jinzhou 2 XU Shuwei 1 XIE Yuanxiang 1 LI Zhankui 1 1. (EC+β⁺) decay study of ¹³⁰Ce and it’s radiochemical separation[J]. Nuclear techniques, 2002, (1): 9-14. DOI：

摘要

利用兰州SFC加速的16O束轰击同位素118Sn

由熔合蒸发 4n反应产生目标核13 0 Ce。为了消除本底干扰并指定13 0 Ce核

采用溶剂萃取法对He - jet带传输系统从靶室传输出来的反应产物进行了离线分离与纯化。将目标核13 0 Ce从大量的靶材料、反应产物及母核中分离出来

快速制成薄源后在铅室中进行γ单谱测量及X -γ、γ -γ符合测量。从化学分离后的产物中观察到了半衰期为 2 2 .9min的 10 8条γ射线

其中 10 7条是新发现的

该活性被指定为13 0 Ce。在此基础上

进一步研究这些γ线的级联关系

建立了缺中子同位素13 0 Ce较完整的（EC + β+ ）衰变纲图。为118Sn（16O

4n） 13 0 Ce反应体系建立的放化分离流程的分离时间仅 10min

化学产额大于70 %。化学分离除去 98%以上的核反应生成的13 0 La

对其它杂质的去污完全满足13 0 Ce（EC + β+ ）衰变研究的要求。

Abstract

The nuclide 130 Ce was produced by a ( 16O

4n) reaction carried out at the SFC accelerator of IMP on an enriched 118 Sn target. Reaction products were moved to a shielded location by a He-jet tape-transport system

then using a radiochemical separation procedure in which a solvent extraction and precipitation with oxalic acid method was applied

Ce was separated

purified and made into thin sample rapidly

and then a single spectrum as well as X-γ

γ-γ coincidence measurements was performed . A 22.9min activity in chemical separated sample was identified as 130 Ce. The decay scheme was proposed for the first time. The scheme included 108 lines of γ rays

among which 107 being new. Total separation time of this new chemical procedure was about 10min

and the chemical yield was about 70%. More than 98% La produced in nuclear reaction was removed

decontamination of other impurities also satisfied the requirement of study of 130 Ce (EC+β +) decay scheme.

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(EC+β+) decay study of 130Ce and it’s radiochemical separation

DOI：

摘要

Abstract

关键词

Keywords

references

(EC+β⁺) decay study of ¹³⁰Ce and it’s radiochemical separation