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Spin-polarized 3He nuclear targets and metastable 4He atoms by optical pumping with a tunable, Nd:YAP laser

Bohler, C. L. and Schearer, L. D. and Leduc, M. and Nacher, P. J. and Zachorowski, L. and Milner, R. G. and McKeown, R. D. and Woodward, C. E. (1988) Spin-polarized 3He nuclear targets and metastable 4He atoms by optical pumping with a tunable, Nd:YAP laser. Journal of Applied Physics, 63 (8). pp. 2497-2501. ISSN 0021-8979. http://resolver.caltech.edu/CaltechAUTHORS:BOHjap88

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Abstract

Several Nd:YAP lasers were constructed which could be broadly tuned in the 1083-nm region which includes the helium 23S-23P transition, using a Lyot filter and thin, uncoated etalons within the laser cavity. 1 W of power could be extracted at 1083 nm through a 1% transmitting output coupler. This laser beam was used to optically pump metastable 4He and 3He 23S helium atoms in a weak discharge cell, spin polarizing the metastable ensemble. In a 3He cell the polarization is transferred to the nuclear spin system. A 3He target cell at 0.3 Torr was polarized to 52% in a few minutes. We describe the application of this system to the design of polarized targets for experiments in nuclear physics.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1063/1.341028DOIUNSPECIFIED
http://link.aip.org/link/?JAPIAU/63/2497/1PublisherUNSPECIFIED
Additional Information:Copyright © 1988 American Institute of Physics. Received 11 November 1987; accepted 10 December 1987. The authors acknowledge the interest and support of Texas Instruments, Dallas, TX (C.L.B. and L.D.S.); Centre National de la Recherche Scientifique, Paris, France (M.L. and P.J.B.); National Science Foundation Grant No. PHY85-05682 (R.G.M., R.D.M., and C.E.W.). The interest of the Scientific Affairs Division of NATO in this research is also acknowledged.
Funders:
Funding AgencyGrant Number
Texas InstrumentsUNSPECIFIED
Centre National de la Recherche ScientifiqueUNSPECIFIED
National Science FoundationPHY85-05682
NATO, Scientific Affairs DivisionUNSPECIFIED
Subject Keywords:NEODYMIUM LASERS, OPTICAL PUMPING, HELIUM 4, HELIUM 3, POLARIZED TARGETS, POLARIZATION, FABRICATION
Record Number:CaltechAUTHORS:BOHjap88
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:BOHjap88
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:11187
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:22 Jul 2008 21:37
Last Modified:26 Dec 2012 10:10

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