X-RAY TUBE AND X-RAY DETECTOR

WIPO Patent Application WO/2020/122257

A1

Provided are an X-ray tube and an X-ray detector that can bring a target as close as possible to a sample. The X-ray tube comprises: an electron generation unit; an electron acceleration unit that accelerates electrons generated by the electron generation unit with a voltage; a target with which the accelerated electrons collide so that X-rays are generated; a tubular body part in which the electron generation unit is disposed; a narrow-tube part which has a smaller outer diameter than the tubular body part and communicates with the tubular body part, and through which the accelerated electrons pass the inside thereof along a longitudinal direction; and a magnetic field lens part that focuses the electrons passing through the inside of the narrow-tube part by means of a magnetic field, wherein the target is disposed at a tip portion of the narrow-tube part, and the distance from the electron generation unit to the target along the longitudinal direction of the narrow-tube part exceeds three times the largest outer diameter of the tubular body part from the electron generation unit to the target along the longitudinal direction of the narrow-tube part.

AWATA SHOGO (JP)
AOYAMA JUNICHI (JP)
MIZUTA MASAO (JP)

PCT/JP2019/049162

June 18, 2020

December 16, 2019

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HORIBA LTD (JP)

H01J35/08; G01N23/223; G21K5/02; G21K5/08; H01J35/14; H01J35/16; H01J35/32

JPS58145049A	1983-08-29
JPH09505686A	1997-06-03
US20180286623A1	2018-10-04
JP2016536771A	2016-11-24
JPS4734508B1	1972-08-31
JP2007134325A	2007-05-31
JP2015130334A	2015-07-16

KOHNO, Hideto et al. (JP)

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