Nuclear Techniques ›› 2019, Vol. 42 ›› Issue (9): 90603-090603.doi: 10.11889/j.0253-3219.2019.hjs.42.090603

• NUCLEAR ENERGY SCIENCE AND ENGINEERING • Previous Articles     Next Articles

Study on uranium film distribution of fission chamber used in nuclear instrumentation system

Guangzhi SUN1,Cai REN1,Congji MAO2,Mi ZHANG2,Shucheng LI3,Wenzhen LIU3,Le ZENG1,Shunli QIU1,Hui CHENG1,Hongyi FENG1,Ling XU1,Yiyuan WANG1   

  1. 1. Wuhan Secondary Institute of Ships, Wuhan 430064, China
    2. Nuclear and Radiation Safety Center, Beijing 100082, China
    3. State Nuclear Power Automation System Engineering Company,Ltd, Shanghai 200241, China
  • Received:2019-05-07 Revised:2019-06-20 Online:2019-09-10 Published:2019-09-18
  • About author:SUN Guangzhi, male, born in 1981, graduated from Lanzhou University with a doctoral degree in 2009, senior engineer, focusing on nuclear detector and NIS
  • Supported by:
    National Science and Technology Major Project(2019ZX06002012)

Abstract: Background

The uniformity of uranium film thickness in fission chamber used in nuclear instrumentation system (NIS) has a great influence on its measurement accuracy.


This study aims to explore appropriate plating process and test method.


Based on the study of the distribution of uranium foil in the fission chamber of the NIS system, an instrument which can measure the thickness of uranium film on the inner surface of cylinder electrode of the chamber was set up. Two fission chamber samples, one was coated with a vertical electrodepositing techniques and the other was coated with a horizontal electrodepositing techniques, were measured by the instrument. The difference between them was analyzed and the mechanism of uranium film formation and causes of distribution differences were investigated.


The results of the experiment are coincident with theoretical analysis.


This study can be used to guide the production process control of fission chamber.

Key words: Fission chamber, Electrodeposition, Uranium film, PIPS detector

CLC Number: 

  • TL816+.3