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

Journal Article · Mon Jan 31 00:00:00 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.), Vol. 30, Issue 1; Other Information: DOI: 10.1070/QE2000v030n01ABEH001664; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

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