Nuclear resonance fluorescence in /sup 142/Nd
The resonant scattering of electron bremsstrahlung by an enriched sample of /sup 142/Nd has been studied for photon energies of up to 5 MeV. It provides estimates of the radiative widths for 13 levels. Based on the relative yields at scattering angles of 96/sup 0/ and 126/sup 0/, unambiguous spin assignments were made to 6 of these levels. Where feasible, the yield measurements were supplemented by self-absorption data and by linear polarization studies. For the strongest excitation, at 3.425 MeV, the resonance fluorescence experiments led to its identification as a 1/sup -/ state with a radiative width GAMMA/sub 0/ = 370 +- 45 meV. The corresponding E1 strength is comparable to the E1 strengths measured in other even-even N = 82 nuclei for the 1/sup -/ member of the quintuplet arising from the coupling of the lowest octupole vibration to the 2/sup +//sub 1/ level. The sum of the excitation energies of the 2/sup +//sub 1/ state and the 3/sup -//sub 1/ state in /sup 142/Nd is consistent with such an interpretation of the 3.425-MeV level.
- Research Organization:
- Bartol Research Foundation of The Franklin Institute, University of Delaware, Newark, Delaware 19711
- OSTI ID:
- 6684885
- Journal Information:
- Phys. Rev., C; (United States), Vol. 18:4
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
NEODYMIUM 142
ENERGY LEVELS
NEODYMIUM 142 TARGET
PHOTONUCLEAR REACTIONS
FLUORESCENCE
RESONANCE SCATTERING
ABSORPTION
ANGULAR DISTRIBUTION
BREMSSTRAHLUNG
CROSS SECTIONS
GAMMA SPECTRA
MEV RANGE 01-10
PARITY
POLARIZATION
SPIN
ANGULAR MOMENTUM
DISTRIBUTION
ELECTROMAGNETIC RADIATION
ENERGY RANGE
EVEN-EVEN NUCLEI
INELASTIC SCATTERING
INTERMEDIATE MASS NUCLEI
ISOTOPES
LUMINESCENCE
MEV RANGE
NEODYMIUM ISOTOPES
NUCLEAR REACTIONS
NUCLEI
PARTICLE PROPERTIES
RADIATIONS
RARE EARTH NUCLEI
SCATTERING
SPECTRA
STABLE ISOTOPES
TARGETS
651723* - Nuclear Properties & Reactions
A=90-149
Experimental- Energy Levels & Transitions- (-1987)
651725 - Nuclear Properties & Reactions
A=90-149
Experimental- Nuclear Reactions & Scattering- (-1987)