Search

Article

x

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

Electrical properties of alpha-particle detectors based on CVD diamond films

Wang Lin-Jun Liu Jian-Min Su Qing-Feng Shi Wei-Min Xia Yi-Ben

Electrical properties of alpha-particle detectors based on CVD diamond films

Wang Lin-Jun, Liu Jian-Min, Su Qing-Feng, Shi Wei-Min, Xia Yi-Ben
PDF
Get Citation
Metrics
  • Abstract views:  3205
  • PDF Downloads:  1207
  • Cited By: 0
Publishing process
  • Received Date:  05 July 2005
  • Accepted Date:  02 November 2005
  • Published Online:  20 May 2006

Electrical properties of alpha-particle detectors based on CVD diamond films

  • 1. 上海大学材料科学与工程学院,上海 200072

Abstract: The influences of the applied bias voltage and the pre-irradiation treatment by alpha particles on the electrical properties of sandwich structural diamond film detectors under 5.5 MeV 241Am alpha-particle irradiation were investigated. Results of current- voltage(I-V) and pulse height distribution measurements showed that the dark current of the diamond film detector would increase due to the pre-irradiation by alpha particles. Under the alpha irradiation, the detector under negative bias voltage had a higher response current and a better signal-to-noise ratio than that under a positive bias. Raman scattering studies directly demonstrated that the above phenomenon resulted mainly from the different structural imperfection distributions along the thickness direction. An energy resolution of about 25.0% was obtained for the detector under a negative bias voltage and 38.4% under a positive bias voltage. With increasing alpha-particle irradiation time, both the response current and the charge collection efficiency increased obviously.

Catalog

    /

    返回文章
    返回