Field emission X-ray source

2019-12-06 21:27:06

electron source emitters ray Japan

责任者: Okuyama, F. 单位: Project XR, Nagoya Inst. of Technol., Japan 来源出处: Journal of the Society of Photographic Science and Technology of Japan(J. Soc. Photogr. Sci. Technol. Jpn. (Japan)),2002/12/,65(7):468-72 摘要: Field emitters comprised of aligned carbon nanofibers are shown to be promising as a primary electron source in an X-ray tube working in a non-ultrahigh vacuum ambience. At a pressure of 2×10-7 Torr, our nanofiber emitters continue to emit electrons for more than 30 h, and yield better resolved X-ray images than do thermionic emitters, independently of whether the sample is biological or nonbiological 关键词: electron field emission;radiography;X-ray imaging;X-ray tubes;X-ray source;field emitters;aligned carbon nanofibers;primary electron source;X-ray tube;nonultrahigh vacuum ambience;resolved X-ray images;X-ray radiography;2×10-7 torr;30 h