Production of a 23S Helium Beam
dc.contributor.author | Fry, E. S. | en_US |
dc.contributor.author | Williams, W. L. | en_US |
dc.date.accessioned | 2010-05-06T22:15:32Z | |
dc.date.available | 2010-05-06T22:15:32Z | |
dc.date.issued | 1969-09 | en_US |
dc.identifier.citation | Fry, E. S.; Williams, W. L. (1969). "Production of a 23S Helium Beam." Review of Scientific Instruments 40(9): 1141-1143. <http://hdl.handle.net/2027.42/70500> | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/70500 | |
dc.description.abstract | Beams of metastable helium produced by electron bombardment generally contain atoms in both the 21S and 23S states. It is important in many experiments to distinguish between these states, or at least to know the population ratio. A beam of 23S and ground state helium atoms has been produced by electron bombardment and subsequent resonant quenching of 21S atoms with 21S−21P 2 μ radiation. This radiation mixes the 21S and 21P states, the latter decaying primarily to the 11S state by emission of 584 Å radiation. The quenching has been studied as a function of beam atom velocity. The results indicate that beams of metastable helium containing less than 1% 21S atoms can be produced. | en_US |
dc.format.extent | 3102 bytes | |
dc.format.extent | 248078 bytes | |
dc.format.mimetype | text/plain | |
dc.format.mimetype | application/pdf | |
dc.publisher | The American Institute of Physics | en_US |
dc.rights | © The American Institute of Physics | en_US |
dc.title | Production of a 23S Helium Beam | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Physics | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Harrison M. Randall Laboratory of Physics, The University of Michigan, Ann Arbor, Michigan 48104 | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/70500/2/RSINAK-40-9-1141-1.pdf | |
dc.identifier.doi | 10.1063/1.1684181 | en_US |
dc.identifier.source | Review of Scientific Instruments | en_US |
dc.identifier.citedreference | E. E. Muschlitz, Jr., Science 159, 599 (1968). | en_US |
dc.identifier.citedreference | H. Holt and R. Krotkov, Phys. Rev. 144, 82 (1966). | en_US |
dc.identifier.citedreference | W. L. Williams and E. S. Fry, Phys. Rev. Lett. 20, 1335 (1968); E. S. Fry and W. L. Williams, Bull. Amer. Phys. Soc. 13, 1397 (1968). | en_US |
dc.identifier.citedreference | We are indebted to C. W. Hendee of Bendix Corp. for supplying the Channeltron multipliers used in this work. | en_US |
dc.identifier.citedreference | D. P. Donnelly, J. C. Pearl, R. A. Heppner, and J. C. Zorn, Rev. Sci. Instrum. 40, 1242 (1969). | en_US |
dc.identifier.citedreference | F. C. Fehsenfeld, K. M. Evenson, and H. P. Broida, NBS Rep. 8701 (1964). | en_US |
dc.identifier.citedreference | J. B. French and J. W. Locke, in Rarefied Gas Dynamics, C. L. Brundin, Ed. (Academic Press Inc., New York, 1967), p. 1461. | en_US |
dc.identifier.citedreference | W. E. Lamb, Jr. and R. C. Retherford, Phys. Rev. 79, 549 (1950). | en_US |
dc.identifier.citedreference | B. Schiff and C. L. Pekeris, Phys. Rev. 134, A638 (1964). | en_US |
dc.owningcollname | Physics, Department of |
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