Solid H[sub 2] and D[sub 2]: Remarkable differences in some NMR properties

Journal Article · Tue Feb 01 00:00:00 EST 1994 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.49.3844· OSTI ID:5221852

Harris, A B ^[1]; Meyer, H; Qin, X ^[2]

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1. Department of Physics, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6396 (United States)
2. Department of Physics, Duke University, Durham, North Carolina 27708-0305 (United States)

The differences in the observed properties of solid H[sub 2] and D[sub 2] are reviewed, and in particular those encountered in NMR experiments. The failure to detect a sharp NMR ([ital I]=1) impurity isolated pair'' spectrum in [ital p]-D[sub 2] is discussed in terms of a larger crystalline field than in H[sub 2], where an intense and sharp pair spectrum has been observed. Furthermore, we discuss the dramatic ([ital I]=1) solid echo signal loss with decreasing temperature which is observed in solid D[sub 2], but not for solid H[sub 2]. A theory of the solid echo damping through orientational fluctuations is developed. This theory accounts for the observed solid echo decay in D[sub 2] as a function of the pulse spacing time [tau] and leads to an estimation of the order parameter fluctuation amplitude and the correlation time [tau][sub [ital c]]. However, the theory cannot account for the loss of spin (as determined from Curie's law), which must occur for very small values of [tau] that are not covered by the theory.

• OSTI ID: 5221852
• Journal Information: Physical Review, B: Condensed Matter; (United States), Vol. 49:6; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
DEUTERIUM
NMR SPECTRA
SPIN ORIENTATION
HYDROGEN
CRYSTAL FIELD
DIFFUSION
EXPERIMENTAL DATA
SOLIDS
SPIN ECHO
SPIN-LATTICE RELAXATION
SPIN-SPIN RELAXATION
DATA
ELEMENTS
HYDROGEN ISOTOPES
INFORMATION
ISOTOPES
LIGHT NUCLEI
NONMETALS
NUCLEI
NUMERICAL DATA
ODD-ODD NUCLEI
ORIENTATION
RELAXATION
SPECTRA
STABLE ISOTOPES
665430* - Other Topics in Quantum Fluids & Solids- (1992-)