SEALED ISOTOPIC FISSION FRAGMENT SOURCE BASED ON CALIFORNIUM-252 AND ITS MANUFACTURING METHOD Russian patent published in 2018 - IPC G21G4/04 

FIELD: chemistry.

SUBSTANCE: invention relates to device and method for manufacturing a sealed isotope fission fragment source based on Californium-252. On aluminum substrate Californium-252 is precipitated by the desorption of the substance under the action of its own fission fragments (self-dispersion), after which a sealing layer of aluminum oxide (Al₂O₃). Proposed invention solves the problem of manufacturing a hermetically sealed and strong source of fission fragments, which has an energy spectrum of the fragments with separation into heavy and light groups with a minimum consumption of the fissile material. Possible embodiment of the invention involves the precipitation of Californium-252, which is carried out by self-spraying in a vacuum from a parent source by scanning the entire surface of the aluminum substrate, and the alumina layer is formed by depositing an aluminum layer over the Californium-252 layer, calcining the aluminum substrate with the layers applied at a temperature close to the melting point of aluminum, and then anodically oxidized.

EFFECT: technical result is to provide a larger area of the active layer and energy spectrum of the fragments with separation into heavy and light groups with a minimum consumption of fissile material in a sealed source of fission fragments.

2 cl, 3 dwg, 1 ex