College Physics >

2017 , Vol. 36 >Issue 3: 57 - 62

DOI: https://doi.org/10.16854 /j.cnki.1000-0712.2017.03.015

Measuring the density of coating film using β rays

  • ZHU Peng-rui ,
  • WEN Jie ,
  • YAO Yu-hua ,
  • LIU Li-jun ,
  • KANG Ming-ming ,
  • ZHANG Zhi-you
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  • School of physics，Sichuan University，Chengdu，Sichuan 610000，China

Received date: 2016-06-07

  Revised date: 2016-08-22

  Online published: 2017-03-20

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Abstract

We measure the density of an aluminum coating film with the relativistic effect experimental spectrometer based on β-ray attenuation and electron energy losses in materials. The systematic error in energy loss method is large due to the widely distributed electron energy spectrum leaving lots of room for improvement. The density of aluminum coating film sample measured in β-ray attenuation method is ( 2.6 ± 0.2) g /cm2 .

Key words： β-ray; attenuation; energy loss; aluminum coating film; density

Cite this article

ZHU Peng-rui , WEN Jie , YAO Yu-hua , LIU Li-jun , KANG Ming-ming , ZHANG Zhi-you . Measuring the density of coating film using β rays[J]. College Physics, 2017 , 36(3) : 57 -62 . DOI: 10.16854 /j.cnki.1000-0712.2017.03.015

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