POLARIZATION OF He$sup 3$ GAS BY OPTICAL PUMPING

Journal Article · Sun Dec 15 04:00:00 EST 1963 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.132.2561· OSTI ID:4138604

Colegrove, F D; Schearer, L D; Walters, G K

The process of He/sup 3/ nuclear polarization by metastability exchange with optically pumped metastable He/sup3 / atoms is described andd experimental details given. Phenomenological theories are presented which explain the optical signals snd the time variation of the polarization. The polarization is measured both optically and by nuclear magnetic resonance. Relaxation of the nuclear spins by diffusion through magnetic field gradients is discussed. When gradients are small, nuclear relaxation times as long as 4000 sec were measured. The maximum polarization achieved was 40 plus or minus 5% in He/sup 3/ gas at a pressure of one mm Hg. (auth)

• Research Organization: Texas Instruments Inc., Dallas
• NSA Number: NSA-18-002451
• OSTI ID: 4138604
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 132; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ABSORPTION
ATOMS
BORON 11
BORON OXIDES
BORON SILICATES
COUPLING
DIFFUSION
ELECTRONS
GASES
GLASS
HELIUM 3
INTERACTIONS
IONS
MAGNETIC FIELDS
MEASURED VALUES
NUCLEAR MAGNETIC RESONANCE
NUCLEAR MODELS
NUCLEI
OPTICAL PUMPING
OPTICAL SYSTEMS
OXYGEN
PERTURBATION THEORY
PHYSICS
POLARIZATION
PRESSURE
PYREX
QUADRUPOLES
QUANTUM MECHANICS
RADIO WAVES
RELAXATION
RESONANCE
SIGNALS
SODIUM CARBONATES
SPECTRA
SPIN
VARIATIONS