GAMMA-GAMMA DIRECTIONAL CORRELATIONS IN Eu$sup 149$ DECAY

Thesis/Dissertation · Mon Jan 01 04:00:00 EST 1962

OSTI ID:4702408

Ventrice, C A

Gamma-gamma directional correlation measurements are performed on the radiation which arises from the electron-capture decay of Eu/sup 149/ in order to determine the spins of the excited states of Sm/sup 149/, which arise from this decay, and the multipolarity of the de-excitation radiation. Slow and fast-slow coincidence techniques were used in conjunction with an RIDL 400 channel analyzer. In addition, coincidence and half life investigations were performed in order to establish the existence of a gamma transition between the 558.3 and 277.2 kev levels of Sm/sup 149/. Spins of 7/2,9/2,9/2, 7/2 or 1/2, and 7/2 were assigned to the spectively. The 178.4, 72.9, 327.7, 281, and 277.2 kev gamma transitions from the decay were all found to contain quadrupole admixtures of 30% or greater. The spin and quadrupole admixture assignments were found to be consistent with beta and gamma decay theory. (Dissertation Abstr. 23: May 1963)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-17-026632
• OSTI ID: 4702408
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ANGULAR DISTRIBUTION
CAPTURE
COINCIDENCE METHODS
DECAY
ELECTRONS
ENERGY LEVELS
EUROPIUM 149
EXCITATION
GAMMA RADIATION
HALF- LIFE
MEASURED VALUES
PHYSICS
PULSE ANALYZERS
SAMARIUM 149
SPIN
TRANSITIONS