A new method of alpha ray measurement using a Quadrupole Mass Spectrometer

Details A new method of alpha ray measurement using a Quadrupole Mass Spectrometer A new method of alpha ray measurement using a Quadrupole Mass Spectrometer

2007-04-16

arxiv.org/abs/0704.1944v1

Nucl.Instrum.Meth.A577:619-622,2007

Physics

Nuclear Physics

Nuclear Experiment

8 pages, 6 figures

Scientific paper

10.1016/j.nima.2007.04.123

We propose a new method of alpha($\alpha$)-ray measurement that detects helium atoms with a Quadrupole Mass Spectrometer(QMS). A demonstration is undertaken with a plastic-covered $^{241}$Am $\alpha$-emitting source to detect $\alpha$-rays stopped in the capsule. We successfully detect helium atoms that diffuse out of the capsule by accumulating them for one to 20 hours in a closed chamber. The detected amount is found to be proportional to the accumulation time. Our method is applicable to probe $\alpha$-emitting radioactivity in bulk material.

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