Measuring device
According to an embodiment, a measuring device includes a plurality of scintillators, plurality of receiving elements, and a processor. The scintillators each convert incident radiation into light. The receiving elements each convert scintillation light received by a light receiving surface thereof into an electric signal. The processor acquires a value corresponding to an intensity of the incident radiation based on the electric signal. Each of the scintillators includes an incident surface on which the radiation is incident. The incident surface includes an inclination that has a predetermined angle with respect to the light receiving surface and that is asymmetric with respect to a center of the incident surface. The scintillators are arrayed on a plane including the light receiving surface.
1. A measuring device comprising:
a plurality of scintillators to each convert incident radiation into light;
a plurality of receiving elements to each convert scintillation light received by a light receiving surface thereof into an electric signal; and
a processor to acquire a value corresponding to an intensity of the incident radiation based on the electric signal, wherein
each of the scintillators has an end that is an incident surface and has another end at which the light receiving surface is provided,
the incident surface includes an inclination that has a predetermined angle with respect to the light receiving surface and that is asymmetric relative to a direction connecting the incident surface to the light receiving surface, with respect to a center of the incident surface,
the plurality of scintillators are arrayed on a plane including the light receiving surface, and
another scintillator having a lower density than that of the plurality of scintillators is arranged on the incident surface.
2. The device according to claim 1 , wherein, among the plurality of scintillators, a first scintillator having the inclination in a first direction and a second scintillator having the inclination in a second direction intersecting the first direction are arranged adjacent to each other.
3. The device according to claim 1 , wherein the scintillator includes one inclination.
4. The device according to claim 1 , wherein the inclination forms an acute angle of 45° or smaller with respect to a direction orthogonal to the light receiving surface.
5. The device according to claim 1 , wherein one light receiving element is provided for one scintillator.
6. The device according to claim 1 , wherein one light receiving element is provided for the plurality of scintillators.
7. The measuring device claim 1 , wherein the processor performs signal detection by simultaneously counting the electric signals output from the light receiving elements adjacent to each other.
8. The device according to claim 1 , wherein
when the processor has acquired first energy based on the electric signal detected from a first light receiving element serving as a target among the light receiving elements, and has acquired, at the same time, second energy in a specific energy region specific to material of the scintillator based on the electric signal detected from a second light receiving element neighboring the first light receiving element,
the processor acquires, as energy corresponding to the intensity of the radiation incident on the scintillator corresponding to the first light receiving element, energy obtained by adding the second energy to the first energy.
9. The device according to claim 1 , wherein the scintillators are arrayed in a grid.