Preparation of highly polarized nuclei: Observation and control of time-dependent polarization transfer from H{sup 35}Cl molecular rotation to {sup 35}Cl nuclear spin

Journal Article · Sun Jul 15 04:00:00 EDT 2007 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.76.012503· OSTI ID:21011207

Sofikitis, Dimitris; Rakitzis, T Peter ^[1]; Martin, Marion R; Brown, Davida J. Ankeny; Bartlett, Nathaniel C.-M.; Zare, Richard N ^[2]

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1. Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, 71110 Heraklion-Crete (Greece)
2. Department of Chemistry, Stanford University, Stanford, California 94305-5080 (United States)

We demonstrate time-dependent polarization transfer from molecular rotation to nuclear spin. The H{sup 35}Cl (v=2,J=1,M=1) state is excited with a 1.7 {mu}m laser pulse, and then dissociated with a delayed 235 nm laser pulse to produce {sup 35}Cl atoms. Time-dependent polarizations of both H{sup 35}Cl (v=2,J=1) molecules and {sup 35}Cl({sup 2}P{sub 3/2}) atoms, which vary due to hyperfine quantum beating, are measured. The {sup 35}Cl nuclear spin is highly polarized (<M{sub Cl}>{approx_equal}1.1) at a pump-probe delay of 145 ns. Densities surpassing 10{sup 14} cm{sup -3} are achieved. The technique is applicable to many atoms not amenable to optical pumping.

• OSTI ID: 21011207
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 1 Vol. 76; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
CHLORINE 35
CONTROL
DENSITY
DISSOCIATION
HYDROGEN COMPOUNDS
HYPERFINE STRUCTURE
LASER RADIATION
OPTICAL PUMPING
ORIENTED NUCLEI
PHOTOLYSIS
PHOTON-MOLECULE COLLISIONS
POLARIZATION
PULSES
ROTATION
ROTATIONAL STATES
S STATES
SPIN
TIME DEPENDENCE