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Radiation detecting element, radiation detecting apparatus and manufacturing method of radiation detecting element UPDATE_EN achieved

Foreign code F190009919
File No. 08312-US
Posted date Aug 26, 2019
Country United States of America
Application number 201514838316
Gazette No. 20160061963
Gazette No. 9678221
Date of filing Aug 27, 2015
Gazette Date Mar 3, 2016
Gazette Date Jun 13, 2017
Priority data
  • P2014-172299 (Aug 27, 2014) JP
Title Radiation detecting element, radiation detecting apparatus and manufacturing method of radiation detecting element UPDATE_EN achieved
Abstract When a scintillator and a reinforcing member are bonded by using an adhesive, scattering and reflection occur at interfaces between the scintillator and the adhesive and between the adhesive and the reinforcing member. Due to this, a blurred image is formed on a sensor, and the resolution deteriorates. A radiation detecting element comprises: a substrate transparent to visible light; and a fluorescent screen that emits fluorescence in response to radiation by a dopant added to a material that is the same as a material of the substrate, wherein the fluorescent screen is thinner than the substrate, and the substrate and the fluorescent screen are bonded while maintaining continuity of a refractive index.
Outline of related art and contending technology BACKGROUND
1. Technical Field
The present invention relates to a radiation detecting element, a radiation detecting apparatus, and a manufacturing method of a radiation detecting element.
2. Related Art
It has been known that a scintillator of a measuring apparatus to measure radiation is made thin while maintaining the strength of the scintillator by bonding the scintillator and a transparent reinforcing member with an adhesive to make them thin, as described for example in Japanese Patent Application Publication No. 2012-26821.
However, when a scintillator and a reinforcing member are bonded by using an adhesive, scattering and reflection occur at interfaces between the scintillator and the adhesive and between the adhesive and the reinforcing member. Due to this, a blurred image is formed on a sensor, and the resolution deteriorates.
Scope of claims [claim1]
1. A manufacturing method of a radiation detecting element comprising:
bonding, by solid state diffusion, a substrate transparent to visible light and a fluorescent screen that emits fluorescence in response to radiation by a dopant added to a material that is the same as a material of the substrate; and
thinning the fluorescent screen, wherein
the bonding includes applying pressure to the substrate and the fluorescent screen.

[claim2]
2. The manufacturing method according to claim 1, wherein, the bonding includes applying pressure to the substrate and the fluorescent screen in the bonding directions of the substrate and the fluorescent screen.

[claim3]
3. The manufacturing method according to claim 1, wherein the thinning includes polishing the fluorescent screen.

[claim4]
4. The manufacturing method according to claim 1, wherein the bonding is performed after a bonding surface of the substrate is superposed on a bonding surface of the fluorescent screen.
  • Inventor, and Inventor/Applicant
  • KAMESHIMA Takashi
  • RIKEN
IPC(International Patent Classification)

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