| 摘要 |
PROBLEM TO BE SOLVED: To provide a radiation image conversion panel that has excellent brightness and sharpness.SOLUTION: In a radiation image conversion panel of the present invention having a phosphor layer or a stimulable phosphor layer containing an alkali metal halide fluorescent material provided on a support by an evaporation method, the alkali metal halide fluorescent material has a columnar crystal, and the abundance ratio of an activator between the surface and inside of the columnar crystal is 0.7 to 20, or the brightness distribution by cathode luminescence inside the columnar crystal is 50% or less. |
