Study on Improvement of Efficiency for Miniaturized X-rays Source using Pyroelectric Single Crystals

热释电单晶提高小型化X射线源效率的研究

• 批准号: 23560058
• 负责人: YOSHIKADO Shinzo
• 金额: $ 3.41万
• 依托单位: Doshisha University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23560058/
• 关键词: 焦電性結晶; X線発生メカニズム; 連続発生; 結晶沿面放電; 電荷の蓄積; 温度変化の周期; 強度の安定化; 封入式小型X線発生装置; Ｘ線発生装置; 小型化; 光電効果; 沿面放電; 小型ｘ線源; 熱励起; ｘ線強度の増大; ｘ線強度の安定化

Compared with an X-ray tube, the X ray intensity of the X-rays generating method only by the temperature change of pyroelectric crystals (LiTaO_3) is instable and discontinuous principally. The purpose of this study is to clarify the instability and improve the discontinuity. One of the factors of instability was related to creeping discharge at the surface of a crystal and was improved drastically by the optimization of the electron supply by a photoelectric effect or the cycle a temperature change. Using two or more crystals and optimizing both the cycle and phase of a temperature change, the shape, and target material, the instability of intensity was improved. The miniaturized X-rays generators with a high vacuum enclosure were fabricated and the excellent X-rays-emission characteristic was achieved.

与X射线管相比，仅通过pyroelectric晶体的温度变化（LITAO_3）的温度变化，X射线生成方法的X射线强度主要是不稳定的，并且主要是不连续的。这项研究的目的是阐明不稳定性并改善不连续性。不稳定性因素之一与晶体表面的蠕动排放有关，并通过光电效应或温度变化的循环对电子供应进行优化而大大改善。使用两个或多个晶体，并优化温度变化，形状和目标材料的循环和相位，强度的不稳定性得到了改善。制造了具有高真空围栏的微型X射线发电机，并实现了出色的X射线排放特性。

项目成果

Effects of Electrostatic Discharge on the Stability of Pryoelectric-induced X-ray Emission in LaTiO3 Crystals

静电放电对 LaTiO3 晶体热电致 X 射线发射稳定性的影响

• 发表时间: 2013
• 期刊: Key Engineering Materials
• 作者: Hiroyuki Honda;Yoshikazu Nakanishi;Shinji Fukao;Yuuki Sato;Yoshiaki Ito and Shinzo Yoshikado
• 通讯作者: Yoshiaki Ito and Shinzo Yoshikado

高真空中でLiTaO3単結晶を用いたX線源の強度の安定化

高真空下使用LiTaO3单晶稳定X射线源强度

• 发表时间: 2011
• 作者: 瀬下史人;桑島豊;重原孝臣;H. Minamide;Kitahama Yasutaka; Itoh Tamitake; Ishido Tomomi; et al.;本田博敬，深尾真司，中西義一，佐藤祐喜，伊藤嘉昭，吉門進三
• 通讯作者: 本田博敬，深尾真司，中西義一，佐藤祐喜，伊藤嘉昭，吉門進三

Mechanism of X-ray Generation using Pyroelectricity

利用热释电产生 X 射线的机制

• 发表时间: 2013
• 期刊: Key Engineering Materials.
• 作者: H. Honda; Y. Nakanishi; S. Fukao; Y. Sato; Y. Ito and S. Yoshikado
• 通讯作者: Y. Ito and S. Yoshikado

LiTaO3単結晶を用いたＸ線強度の安定性の評価

使用LiTaO3单晶评估X射线强度的稳定性

• 发表时间: 2011
• 作者: S. Hayashi;K. Nawata;K. Kawase;and H. Minamide;本田博敬，中西義一，深尾真司，佐藤祐喜，伊藤嘉昭，吉門進三
• 通讯作者: 本田博敬，中西義一，深尾真司，佐藤祐喜，伊藤嘉昭，吉門進三

Improvement of the Stability of X-ray Emission by Thermal Excitation of a Pyroelectric Songle Crystal

热释电单晶体热激发提高X射线发射稳定性

• 发表时间: 2013
• 期刊: Key Engineering Materials.
• 作者: F. Naruse; H. Honda; Y. Nakanishi; S. Fukao; Y. Sato; Y. Ito and S. Yoshikado
• 通讯作者: Y. Ito and S. Yoshikado