| 摘要 |
PROBLEM TO BE SOLVED: To forecast to calculate the distribution density of positron radiator species in a target cavity from a gamma ray sensing position in a positron photographing equipment, and sensing time data. SOLUTION: Simultaneous counting line data are used in the positron photographing equipment, the coincidence line by the gamma ray which came out of positron radiator species to the same position utilizes the fact of being in position or position at which it crosses mutually of a torque which approached mutually. A pair of two simultaneous counting lines in position or position at which it crosses mutually of a torque which adjoined mutually is calculated by computer processing of harvest data. It utilizes that the number of pairs detected by this result of computation is proportional to the mass density of positron radiator species in the concerned position, and the forecasting calculation of the mass density distribution of the positron radiator species in a target cavity is carried out. COPYRIGHT: (C)2007,JPO&INPIT
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