Abstract
Research efforts ranging from studies of solid helium to searches for a neutron electric dipole moment require isotopically purified helium with a ratio of He3 to He4 at levels below that which can be measured using traditional mass spectroscopy techniques. We demonstrate an approach to such a measurement using accelerator mass spectroscopy, reaching the 10-14 level of sensitivity, several orders of magnitude more sensitive than other techniques. Measurements of He3/He4 in samples relevant to the measurement of the neutron lifetime indicate the need for substantial corrections. We also argue that there is a clear path forward to sensitivity increases of at least another order of magnitude.
Original language | English |
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Article number | 065502 |
Journal | Physical Review C |
Volume | 93 |
Issue number | 6 |
DOIs | |
State | Published - 13 Jun 2016 |
Bibliographical note
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