HYPERFINE INTERACTIONS OF THE 2+ STATE IN Dy$sup 160$ SITUATED IN DYSPROSIUM IRON GARNET USING $gamma$$-$$gamma$ ANGULAR CORRELATION TECHNIQUE. Technical Note No. 7

Technical Report · Fri Jun 01 04:00:00 EDT 1962

OSTI ID:4739103

Cohen, S G; Gilat, G

The hyperfine interaction of the 2+ state in Dy/sup 160/ situated in ferrim-agnetic dysprosium iron garnet (DIG) was studied at room temperature by measuring the perturbation of the angular correlation of gamma-cascades passing through this state. A large rotation of the angular correlation pattern was observed when the domains were aligned in an external magnetic field perpendicular to the plane of the counters. A longitudinal external field was used to decouple the effectively static part of the hyperfine interaction and isolate the time-dependent interactions. The effective hyperfine interaction was found to be 160 ction in DDT-C/ 50 Ms/ sec. Assuming H/sub eff/ equals 6.0 ction in DDT-C/ 10/sup 5/ Oe, the g factor of the 2+ state has a calculated value of 0.32 ction in DDT-C/ 0.10. The relaxation times characterizing the time-dependent perturbations are estimated to be (1.5 ction in DDT-C/ 0.5) x 10 to the minus 12th power sec for DIG. (auth)

• Research Organization: Hebrew Univ., Jerusalem
• NSA Number: NSA-17-018888
• OSTI ID: 4739103
• Report Number(s): AD-284411
• Country of Publication: United States
• Language: English

Related Subjects

ANGULAR DISTRIBUTION
CONFIGURATION
COUNTERS
DYSPROSIUM 160
ENERGY LEVELS
GAMMA RADIATION
GYROMAGNETIC RATIO
HYPERFINE STRUCTURE
INTERACTIONS
IRON
MAGNETIC FIELDS
MAGNETIC MATERIALS
MAGNETIC MOMENTS
MEASURED VALUES
PHYSICS
POLARIZATION
RELAXATION
ROTATION
SPIN
ZONES