Journal Title
Physical Review Letters
Publication Date
4-20-1992
Abstract
We report the first experiments in which 5-MeV alpha particles are detected via evaporation from a bath of superfluid helium. The α excites phonons and rotons in the liquid helium, and these excitations are sufficiently energetic to evaporate helium atoms when they reach the free surface of the liquid. The approximate overall efficiency of this process has been determined, and we compare this with expectations. We have also been able to detect evaporation induced by a flux of γ’s from a 137Cs source.
Subjects
Liquid helium; Solar neutrinos; Helium at low temperatures
Citation: Pilot Scholars Version (Modified MLA Style)
Bandler, S. R.; Lanou, R. E.; More, Tamar; Porter, F. S.; Seidel, G. M.; and Torii, R. H., "Particle Detection by Evaporation from Superfluid Helium" (1992). Physics Faculty Publications and Presentations. 42.
https://pilotscholars.up.edu/phy_facpubs/42
DOI
10.1103/PhysRevLett.68.2429
Peer-Reviewed
Yes
Document Type
Journal Article
Publication Information
Copyright 1992 The American Physical Society. The original published version of this article may be found at http://dx.doi.org/10.1103/PhysRevLett.68.2429.