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Development of a Simple and Tough Alpha-Particle Detector Used at High Temperature

Toshiyuki IIDA, Fuminobu SATO, Yushi KATO, Ippei ISHIKAWA and Teruya TANAKA¹⁾

Osaka University, Suita 565-0871, Japan

1)

National Institute for Fusion Science, Toki 509-5292, Japan

(Received 4 December 2006 / Accepted 8 March 2007 / Published 20 November 2007)

Abstract

Several ceramic detectors were made by use of the insulation layer formed on two types of substrate, i.e. aluminum and silicon. Each detector was irradiated with alpha-rays from an Am-241 source and the electric charge induced in the detector was measured in the temperature range from room temperature up to 450 K. The alpha-ray detection signals were well observed with an oscilloscope at the properly high bias-voltage only for very short time from several seconds to several tens of seconds before the start of the sweeping insulation breakdown. Though this type of the simple detector made of a thin ceramic layer can be hardly used for the energy analysis, it might be effectively applicable to the measurement of the flux of alpha-particles at high temperature.

Copyright (c) 2007 The Japan Society of Plasma Science and Nuclear Fusion Research

Keywords

alpha-particle detector, ceramic detector, insulation breakdown, surface oxidation, anodic oxidation, alpha-particle flux monitor

DOI: 10.1585/pfr.2.S1085

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References

• [1] M. Sasao et al., IEEE Trans. on Plasma Scienc 33, 1872 (2005).
• [2] M. Sasao et al., Plasma Phys. Control. Fusion 46(7), S107 (2004).
• [3] S. Wernick and R. Pinner, “The Surface Treatment and Finishing of Aluminium and it's Alloys”, Robert Draper, Teddington, 4th edition (1972).
• [4] S. Gonda et al., Hakumaku Sakusei Handobukku (Formation of Thin Foils), (in Japanese) (NTS Press, 2003).

This paper may be cited as follows:

Toshiyuki IIDA, Fuminobu SATO, Yushi KATO, Ippei ISHIKAWA and Teruya TANAKA, Plasma Fusion Res. 2, S1085 (2007).