X-ray Radiation Using Polarized in the c-axis Direction LiNbO₃ Single Crystals in a Low-Pressure Gas Ambient

Abstract

The dependence of X-ray intensity on the case material and electric surface area was investigated for LiNbO₃ single crystals polarized in the c-axis direction at pressures of approximately 1 to 30 Pa. The integrated X-ray intensity per cycle in the energy range 1 to 20 keV becomes maximum (I_max) at the pressure P_max. It was found that the integrated X-ray intensity increased rapidly around P_max because electrons are emitted from a cylinder by a photoelectric effect mainly.