METHOD AND PLANAR SIMULATING SOURCE FOR DETERMINING CONTENT OF RADIONUCLIDES Russian patent published in 1999 - IPC

FIELD: radiation safety; radiation monitoring of building materials, environment, miscellaneous loose and crushed materials, and solid parts. SUBSTANCE: method involves use of enclosed planar simulating source as internal standard which is placed directly in analyzed sample coaxially to detector without contacting sample material by active substance. Simulating source is standard source wherein surface-distributed point sources simulate activity of homogeneous three-dimensional sample which makes it possible to take into account geometry of measurements and absorption of gamma-ray photons in analyzed sample material. EFFECT: enlarged functional capabilities, facilitated procedure. 3 cl, 2 dwg, 2 tbl, 1 ex