| 摘要 |
PROBLEM TO BE SOLVED: To detect, in a method detecting particles containing infinitesimal fission materials contained in a collected swipe sample by the fission track method, the particles containing the fission materials in a short time and easily by eliminating sophisticated measuring techniques using special apparatus such as an atomic force microscope and eliminating effects in which the shape of the core of a fission track depends on the surface shape of the particles. SOLUTION: By eliminating the effects of particle size by adjusting the particle size when particles are collected from the swipe sample and using that the time elapsed until the fission track appears by the chemical etching on a detector and the shape of the fission track depend on the enrichment of the fission materials, the etching time for the detector is controlled. As the particle size adjustment method when collecting the particles, a two-stage particle suction method can be used. COPYRIGHT: (C)2008,JPO&INPIT
|
