Extraction of MeV high energy cluster beams using tandem accelerator

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Extraction of MeV high energy cluster beams using tandem accelerator

更新时间：2021-03-12

- Extraction of MeV high energy cluster beams using tandem accelerator
- NUCLEAR TECHNIQUES Issue 2, (2000)
- 作者机构：
  
  1. 复旦大学现代物理研究所
  2. 应用离子束核物理实验室!上海２００４３３
- 作者简介：
- 基金信息：
  
  核工业科学基金
- DOI：
  CLC： TL52;O571.6
- Published：01 February 2000
- 稿件说明：
移动端阅览
[1]张卫东,裘元勋,孙传琛,贺勉鸿.用串列静电加速器获取MeV高能团簇离子束[J].核技术,2000(02):94-100.

Extraction of MeV high energy cluster beams using tandem accelerator[J]. Nuclear techniques, 2000, (2).
[1]张卫东,裘元勋,孙传琛,贺勉鸿.用串列静电加速器获取MeV高能团簇离子束[J].核技术,2000(02):94-100. DOI：

Extraction of MeV high energy cluster beams using tandem accelerator[J]. Nuclear techniques, 2000, (2). DOI：

摘要

利用复旦大学现有的串列静电加速器（ＮＥＣ９ＳＤＨ—２）获得了能量为１—４ＭｅＶ的硼、碳、硅及金等小型高能团簇离子束：Ｂｎ＋（ｎ＝２）、Ｃｎ＋（ｎ＜１０）、Ｓｉｎ＋（ｎ＝２，３，４）以及Ａｕｎ＋（ｎ＝２）；束流强度与团簇的种类和所含的原子数有关，为０．１—１００ｎＡ量级。注入加速器的低能团簇负离子由铯溅射离子源（ＳＮＩＣＩＩ）产生，高能团簇正离子的质量鉴别用磁分析器完成。高能碳团簇负离子Ｃ８－在与剥离气体分子Ｎ２碰撞过程中形成的团簇碎片质量谱显示出与碳团簇结构有关的奇偶效应。

Abstract

Small cluster ions such as B

（n = 2）

（n

10）

（n = 2

4） and Au

（n= 2）have been accelerated to 1-4 MeV in the 3×2MV tandem pelletron of FudanUniversity （NEC 9SDH2）. Intensities of the MeV cluster beams ranging from 0.1 to100nA depend on the type of cluster ions and the number of atom it contains. The lowenergy negative cluster ions injected were obtained from a cesium sputter source（SNICS II）. The mass analysis of the high energy cluster beams was performed by aswitching magnet. The mass spectrum of the carbon cluster beam produced in thecollisions of C

cluster ions with stripping gas molecules N

indicates that there isan odd-even effect related to the carbon cluster styucture.

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Measurement and evaluation of radiation field for a 2×2MV tandem accelerator with ¹²C²⁺ ion beam

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