Observation of nuclear spin waves in spin-polarized atomic hydrogen gas

Journal Article · Mon Apr 23 00:00:00 EST 1984 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.52.1508· OSTI ID:6778455

Johson, B R; Denker, J S; Bigelow, N; Levy, L P; Freed, J H; Lee, D M

We have observed narrow, distinct resonances in the NMR spectrum of dilute spin-polarized atomic hydrogen gas (nroughly-equal10/sup 16/ atoms/cm/sup 3/). The dependence of the observed spectra on temperature, density, polarization, and magnetic field gradient is consistent with theoretical predictions for spin-wave excitations damped by diffusion. We have measured the parameter ..mu.., which is a measure of the importance of exchange effects in spin transport processes, and the diffusion coefficient D/sub 0/, both of which are in reasonable agreement with theory.

• Research Organization: Laboratory of Atomic and Solid State Physics and Baker Laboratory of Chemistry, Cornell University, Ithaca, New York 14853
• OSTI ID: 6778455
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 52:17; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

640450* -- Fluid Physics-- Superfluidity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ATOMS
COLLECTIVE EXCITATIONS
DATA
ELEMENTS
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXPERIMENTAL DATA
FLUIDS
GASES
HYDROGEN
INFORMATION
MAGNETIC RESONANCE
NONMETALS
NUCLEAR MAGNETIC RESONANCE
NUCLEI
NUMERICAL DATA
ORIENTATION
QUANTUM FLUIDS
RAREFIED GASES
RESONANCE
SPIN FLIP
SPIN ORIENTATION
SPIN WAVES