| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1822499 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2015 | 4 Pages |
•Alpha particle spectrometry with collimation a useful method for identifying nuclear materials among various radionuclides.•A collimator cut off alpha particles with low angle emitted from a source.•We confirm that that a collimator improves the resolution of alpha spectra through both simulation and experiments.
Alpha particle spectrometry with collimation is a useful method for identifying nuclear materials among various nuclides. A mesh type collimator reduces the low energy tail and broadened energy distribution by cutting off particles with a low incidence angle. The relation between the resolution and the counting efficiency can be investigated by changing a ratio of the mesh hole diameter and the collimator thickness. Through collimation, a target particle can be distinguished by a PIPS® detector under a mixture of various nuclides.
