An apparatus for nuclear lifetime measurement with recoil-distance Doppler-shift method

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An apparatus for nuclear lifetime measurement with recoil-distance Doppler-shift method

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- An apparatus for nuclear lifetime measurement with recoil-distance Doppler-shift method
- NUCLEAR TECHNIQUES Issue 8, (1996)
- 作者机构：
  
  中国科学院近代物理研究所
- 作者简介：
- 基金信息：
- DOI：
  CLC： O571
- Published：01 August 1996
- 稿件说明：
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[1]陈新峰,郭应祥,孙相富,雷祥国,周晓红,刘忠,金寒涓,刘明义,罗亦孝.多普勒能移反冲距离法测核寿命的技术[J].核技术,1996(08):466-472.

An apparatus for nuclear lifetime measurement with recoil-distance Doppler-shift method[J]. Nuclear techniques, 1996, (8).
[1]陈新峰,郭应祥,孙相富,雷祥国,周晓红,刘忠,金寒涓,刘明义,罗亦孝.多普勒能移反冲距离法测核寿命的技术[J].核技术,1996(08):466-472. DOI：

An apparatus for nuclear lifetime measurement with recoil-distance Doppler-shift method[J]. Nuclear techniques, 1996, (8). DOI：

摘要

自行研制了多普勒能移反冲距离法测量寿命的装置，对装置的性能作了测试，并首次在国内用于核实验。用３１Ｐ轰击９３Ｎｂ靶测得了１２０Ｘｅ基带能级寿命及１２１Ｃｓ和１１７Ｉ的部分能级的寿命。实验结果表明，用多普勒能移反冲距离法能测量１０－１２－１０－９ｓ范围核激发态寿命。

Abstract

The recoil-distance Doppler-shift （RDDS） methods is an accurate and direct method to measure lifetime of nuclear levels in 10-12-10-9s range. An apparatus based on the RDDS method was designed and tested. An in-beam experiment with the apparatus was first performed in China. Lifetimes were measured for the levels of 120Xe ground band and a few levels of 121Cs and 117I which are produced by bombardment on 93Nb target with 31p beam.

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