Nuclear resonance fluorescence in /sup 1/44Sm

Journal Article · Wed Mar 01 04:00:00 EST 1978 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.17.939· OSTI ID:6928224

Metzger, F R

Using electron bremsstrahlung with up to 5.2-MeV end-point energy, the resonant scattering of ..gamma.. rays by an enriched sample of /sup 1/44Sm has been studied. Ground-state transitions were observed from a dozen levels, and the scattering yields, measured at 96/sup 0/ and 126/sup 0/, were evaluated in terms of radiative widths and level spins. For the strongest excitations, these measurements were supplemented by self-absorption and linear-polarization studies. Some of the observed E1 transitions originate from 1/sup -/ states which, according to isobaric-analog-resonance studies, contain large neutron-particle-hole components. On the other hand, the 3.225- and 3.891-MeV levels, which exhibit the strongest E1 ground-state transitions, occur at energies which suggest that they arise from the coupling of the lowest octupole vibration to the 2/sup +//sub 1/ and 2/sup +//sub 2/ levels.

• Research Organization: Bartol Research Foundation of the Franklin Institute, University of Delaware, Newark, Delaware 19711
• OSTI ID: 6928224
• Journal Information: Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 17:3; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651723* -- Nuclear Properties & Reactions
A=90-149
Experimental-- Energy Levels & Transitions-- (-1987)
651725 -- Nuclear Properties & Reactions
A=90-149
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
ANGULAR MOMENTUM
BREMSSTRAHLUNG
DISTRIBUTION
ELECTROMAGNETIC RADIATION
ENERGY LEVELS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
FLUORESCENCE
GAMMA SPECTRA
GROUND STATES
INELASTIC SCATTERING
LUMINESCENCE
MEV RANGE
MEV RANGE 01-10
NUCLEAR REACTIONS
PARITY
PARTICLE PROPERTIES
PHOTONUCLEAR REACTIONS
RADIATIONS
RESONANCE SCATTERING
SAMARIUM 144 TARGET
SCATTERING
SPECTRA
SPIN
TARGETS