Broad-band laser optical pumping of Rb for the creation of nuclear polarisation in {sup 3}He

Journal Article · Mon Jan 31 04:00:00 EST 2000 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2000V030N01ABEH001664· OSTI ID:21440412

Kolachevsky, Nikolai N; Papchenko, A A; Sobel'man, Igor I; Sorokin, Vadim N ^[1]; Prokof'ichev, Yu V; Skoi, V R ^[2]

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1. P.N. Lebedev Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)
2. I.M. Frank Neutron Physics Laboratory, Joint Institute of Nuclear Research, Dubna, Moscow region (Russian Federation)

A large volume (30 cm{sup 3}) of dense (up to 10{sup 15} cm{sup -3}) Rb vapour was pumped optically by a high-power laser diode array. The conditions for the propagation of high-power broad-band optical pump radiation through an optically dense medium were examined. A spectroscopic method was developed for determination of the polarisation of Rb. The dependence of the polarisation of Rb on its vapour pressure was investigated at buffer gas pressures of 1, 8, and 13 bar. Under optimal conditions a 15-W diode laser made it possible to polarise at least 10{sup 18} of {sup 3}He atoms per second during collisions between Rb and {sup 3}He atoms, sufficient for the creation of an efficient neutron polariser. (laser applications and other topics in quantum electronics)

• OSTI ID: 21440412
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Journal Name: Quantum Electronics (Woodbury, N.Y.) Journal Issue: 1 Vol. 30; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
ALKALI METALS
ATOM COLLISIONS
BARYONS
BUFFERS
COLLISIONS
ELEMENTARY PARTICLES
ELEMENTS
EVEN-ODD NUCLEI
FERMIONS
HADRONS
HELIUM 3
HELIUM ISOTOPES
ISOTOPES
LASERS
LIGHT NUCLEI
METALS
NEUTRONS
NUCLEI
NUCLEONS
OPTICAL PUMPING
PHYSICAL PROPERTIES
POLARIZATION
PUMPING
RUBIDIUM
STABLE ISOTOPES
THERMODYNAMIC PROPERTIES
VAPOR PRESSURE