Pressure dependence of X-rays produced by an LiTaO3 single crystal over a wide range of pressure

Katsumi Hanamoto; Takahiro Kataoka; Kiyonori Yamaoka

doi:10.1016/j.apradiso.2018.01.019

Pressure dependence of X-rays produced by an LiTaO₃ single crystal over a wide range of pressure

Appl Radiat Isot. 2018 May:135:40-42. doi: 10.1016/j.apradiso.2018.01.019. Epub 2018 Jan 17.

Authors

Katsumi Hanamoto¹, Takahiro Kataoka², Kiyonori Yamaoka²

Affiliations

¹ Graduate School of Health Sciences, Okayama University, 2-5-1 shikata-cho, Kita-ku, Okayama-shi, Okayama 700-8558, Japan. Electronic address: hana@md.okayama-u.ac.jp.
² Graduate School of Health Sciences, Okayama University, 2-5-1 shikata-cho, Kita-ku, Okayama-shi, Okayama 700-8558, Japan.

PMID: 29360055
DOI: 10.1016/j.apradiso.2018.01.019

Abstract

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 X-rays produced by the LiTaO₃ single crystal was compared with the previous works and discussed in relation to the distance between the crystal surface and the target.

Keywords: LiTaO(3); Pressure; Pyroelectric crystal; X-ray.