首页|Radiation of X-rays in Low-Pressure Gas Using LiNbO_3 Single Crystal

Radiation of X-rays in Low-Pressure Gas Using LiNbO_3 Single Crystal

扫码查看
原文链接
  • NETL
  • NSTL
  • Trans Tech Publications Ltd
The gas pressure and the types of ambient gas dependence of X-ray intensity were investigated for LiNbO_3 single crystals polarized in the c-axis direction at pressures of approximately 1 to 30 Pa. The integrated X-ray intensity showed a local maximum value at the pressure P_(max). P_(max) moved to the high-pressure side in the ambient with a large first ionization energy. P_(max) was proportional to the Boltzmann factor using the first ionization energy of each ambient gas molecule. The X-ray intensity was approximated using the quadratic function, which was convex upward for the pressure. It was found that one of the causes of the decrease in X-ray intensity on the pressure side higher than P_(max) was the adsorption of positive ions on the crystal electric surface.

LiNbO_3pyroelectricityuniaxial polarizationX-ray excitationpressure dependencepositive ions

Shinji Fukao、Yoshikazu Nakanishi、Tadahiro Mizoguchi、Yoshiaki Ito、Shinzo Yoshikado

展开 >

Faculty of Science and Engineering, Doshisha University, 1-3 Tatara-Miyakodani, Kyotanabe, Kyoto 610-0321, Japan

Institute for Chemical Research, Kyoto University, Gokasyo, Uji, Kyoto 611-0011, Japan

2010

10.4028/www.scientific.net/KEM.421-422.205

Key engineering materials

Key engineering materials

ISSN：1013-9826
年,卷(期)：2010.421/422
  • 3