Pressure dependence of X-rays produced by an LiTaO 3 single crystal over a wide range of pressure

The energy spectra of X-rays produced by an LiTaO3 single crystal have been measured at the pressures of 8 × 10-4-4Pa. The energy spectra showed that the endpoint energy steadily increased with decrease of pressure at 2-4Pa and gradually decreased with decrease of pressure at 0.1-2Pa, and became almost constant below 0.1Pa. The amount of X-rays steadily increased with decrease of pressure at 2-4Pa and almost saturated below 0.5Pa. The change of...