RADIATION DETECTION APPARATUS AND RADIATION DETECTON METHOD

摘要

A radiation detection apparatus includes a selecting unit that allows a light having a light emission wavelength and a polarization direction to pass thorough the selecting unit, an optical system that forms an image of the light, a photon detecting unit that observes the image formed by the optical system, and detects the photon in whole range of the image, a counting unit that calculates the number of the alpha ray based on a result of counting the photon derived from the light emission of gas excited by the alpha ray, and is possible to sufficiently eliminate background light (noise light) even if background light is strong, and therefore observe weak light emission.

主权项

1. A radiation detection apparatus comprising:
a wavelength selecting unit that allows light having a wavelength selected as a wavelength when a light emission of gas excited by an alpha ray is occurred to pass through the wavelength selecting unit; a first polarization selecting unit that receives the light from the wavelength selecting unit, selects a polarization direction, and allows a light of the selected polarization directions to pass through the first polarization selecting unit; an optical system that forms an image of the light passed through the wavelength selecting unit and the first polarization selecting unit; a photon detecting unit that observes the image formed by the optical system, and detects the photon in whole range of the image; and a counting unit that counts the photon detected by the photon detecting unit, identifies the photon derived from the light emission of gas excited by the alpha ray based on a value obtained from a result of counting the detected photon, counts the identified photon, and calculates the number of the alpha ray based on a result of counting the identified photon.