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High-Sensitivity Measurement of 3He-4He Isotopic Ratios for Ultracold Neutron Experiments
- Publication Year :
- 2015
- Publisher :
- arXiv, 2015.
-
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 3He to 4He 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 10e-14 level of sensitivity, several orders of magnitude more sensitive than other techniques. Measurements of 3He/4He 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.<br />Comment: 11 pages, 10 figures
Details
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....dd197f2cade4bc28eb180ed482129d34
- Full Text :
- https://doi.org/10.48550/arxiv.1512.09351