[en] The invention claims the design of a scintillation detector for X and soft gamma spectrometry. The scintillation material consists of substituted 3,5-dicyano-1,4-dihydropyridine as described in Czechoslovak patent document 141300. The underside of the scintillation material is bonded to a plate, e.g., a glass plate and mounted in a case, e.g., shaped as a flange, in which a tubular element is attached. The tubular element is covered with a transport grid protecting a replaceable foil forming the inlet window. The upperside of the material is provided with a thin layer of light metal. The replaceable foil is from an organic material, e.g., terephthalate. (J.P.)