Continuous-wave NMR in spin-polarized atomic hydrogen

Journal Article · Tue Sep 01 04:00:00 EDT 1987 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.36.3577· OSTI ID:6237544

Penttilae, S; Niinikoski, T O; Rieubland, J H; Rijllart, A

Simultaneous continuous-wave NMR and total-pressure measurements on spin-polarized atomic hydrogen gas in a 5-T magnetic field are reported. During sample loading we observe positive nuclear polarization. The rf susceptibility of the decaying sample is nonlinearly related to the density. This and the anomalous NMR line shape are discussed in light of the identical spin-rotation effect and the hydrodynamic spin-wave model. The analysis of the time evolution of the NMR signal area and of the pressure gives the two-body exchange recombination-rate coefficients K/sub a//sub a/ = 1.8 x 10/sup -19/ cm/sup 3/ s/sup -1/ and K/sub a//sub b/ = 1.6 x 10/sup -19/ cm/sup 3/ s/sup -1/, and the one-body relaxation rate G/sub 1/ = 1 x 10/sup -4/ s/sup -1/ in the absence of rf field, at T = 370 mK.

• Research Organization: European Organization for Nuclear Research, Geneva, Switzerland
• OSTI ID: 6237544
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 36:7; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
CORRELATIONS
ELEMENTS
HYDROGEN
MAGNETIC FIELDS
MAGNETIC PROPERTIES
MAGNETIC RESONANCE
MAGNETIC SUSCEPTIBILITY
NONMETALS
NUCLEAR MAGNETIC RESONANCE
ORIENTATION
PHYSICAL PROPERTIES
PRESSURE MEASUREMENT
RECOMBINATION
RESONANCE
SPIN ORIENTATION
SPIN WAVES