High resolution alpha particle spectrometry through collimation

다국어 초록 (Multilingual Abstract)

<P><B>Abstract</B></P> <P>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<SUP>®</SUP> detector under a mixture of various nuclides.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Alpha particle spectrometry with collimation a useful method for identifying nuclear materials among various radionuclides. </LI> <LI> A collimator cut off alpha particles with low angle emitted from a source. </LI> <LI> We confirm that that a collimator improves the resolution of alpha spectra through both simulation and experiments. </LI> </UL> </P>