Determination of the magnitude and sign of the sup 185,187 Re nuclear electric quadrupole coupling constants using nuclear acoustic resonance

Journal Article · Wed Aug 01 04:00:00 EDT 1990 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.42.1922· OSTI ID:6389106

Sundfors, R K ^[1]

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1. Ultrasonics Laboratory, Department of Physics, Washington University, St. Louis, MO (USA)

Acoustic nuclear electric quadrupole resonance spectra and the magnitude and sign of the coupling constants for {sup 185}Re and {sup 187}Re in rhenium-metal single crystals have been measured using nuclear acoustic resonance (NAR) in a small magnetic field. These measurements were carried out using a NAR reflection bridge spectrometer in the 37--41 MHz frequency range and at 4.2 and 77.8 K. In this hexagonal crystal, the dynamic coupling between acoustic waves and the Re nuclear spin systems is shown to be via the dynamic quadrupole interaction, which is responsible for the observation of both {Delta}{ital m}={plus minus}1 and {plus minus}2 transitions between the {plus minus}3/2 energy levels and the mixed {plus minus}1/2 energy levels. Magnetic-resonance second moments for angular-independent indirect exchange broadening and angular-dependent static electric quadrupole broadening (from a spread in the electric quadrupole coupling constant value) are determined from the measured linewidths.

• OSTI ID: 6389106
• Journal Information: Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 42:4; ISSN 0163-1829; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
656002 -- Condensed Matter Physics-- General Techniques in Condensed Matter-- (1987-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ACOUSTIC NMR
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CRYSTALS
FREQUENCY RANGE
HEAVY NUCLEI
ISOTOPES
LINE WIDTHS
LOW TEMPERATURE
MAGNETIC FIELDS
MAGNETIC RESONANCE
MHZ RANGE
MHZ RANGE 01-100
MONOCRYSTALS
NUCLEAR MAGNETIC RESONANCE
NUCLEAR QUADRUPOLE RESONANCE
NUCLEI
ODD-EVEN NUCLEI
RADIOISOTOPES
RESONANCE
RHENIUM 185
RHENIUM 187
RHENIUM ISOTOPES
STABLE ISOTOPES
ULTRALOW TEMPERATURE
YEARS LIVING RADIOISOTOPES