Nuclear resonance fluorescence in /sup 142/Nd

Journal Article · Sun Oct 01 04:00:00 EDT 1978 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.18.1603· OSTI ID:6684885

Metzger, F R

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), Journal Name: Phys. Rev., C; (United States) Vol. 18:4; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ABSORPTION
ANGULAR DISTRIBUTION
ANGULAR MOMENTUM
BREMSSTRAHLUNG
CROSS SECTIONS
DISTRIBUTION
ELECTROMAGNETIC RADIATION
ENERGY LEVELS
ENERGY RANGE
EVEN-EVEN NUCLEI
FLUORESCENCE
GAMMA SPECTRA
INELASTIC SCATTERING
INTERMEDIATE MASS NUCLEI
ISOTOPES
LUMINESCENCE
MEV RANGE
MEV RANGE 01-10
NEODYMIUM 142
NEODYMIUM 142 TARGET
NEODYMIUM ISOTOPES
NUCLEAR REACTIONS
NUCLEI
PARITY
PARTICLE PROPERTIES
PHOTONUCLEAR REACTIONS
POLARIZATION
RADIATIONS
RARE EARTH NUCLEI
RESONANCE SCATTERING
SCATTERING
SPECTRA
SPIN
STABLE ISOTOPES
TARGETS