Lifetimes and electromagnetic decay properties of negative-parity states in [sup 150,152,154]Sm from ([ital n],[ital n][prime][gamma]) measurements

Journal Article · Wed Sep 01 04:00:00 EDT 1993 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.48.1005· OSTI ID:6025372

Jungclaus, A ^[1]; Belgya, T ^[2]; DiPrete, D P; Villani, M; Johnson, E L; Baum, E M; McGrath, C A; Yates, S W ^[3]; Zamfir, N V ^[4]

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1. Institut Laue-Langevin, F-38042 Grenoble, France and II. Physikalisches Institut, Universitaet Goettingen, D-3400 Goettingen (Germany)
2. Institute of Isotopes, Hungarian Academy of Sciences, H-1525 Budapest (Hungary)
3. University of Kentucky, Lexington, Kentucky 40506 (United States)
4. Brookhaven National Laboratory, Upton, New York 11973 (United States) Clark University, Worcester, Massachusetts 01610 (United States) Institute of Atomic Physics, Bucharest-Magurele (Romania)

The Doppler shifts of [gamma] rays following the decay of the 1[sub 1][sup [minus]] and 3[sub 1][sup [minus]] states in [sup 150,152,154]Sm excited by inelastic scattering of 1.3 MeV neutrons from natural Sm[sub 2]O[sub 3] have been measured. With the Winterbon theory to describe the slowing down process of the recoiling atoms in the bulk of the target material, nuclear lifetimes could be extracted from these data. These measured lifetimes are compared to the results of a recent investigation with the gamma-ray induced Doppler (GRID) broadening technique and have been used to clarify problems associated with the incomplete knowledge of the feeding pattern in heavy nuclei inherent in the GRID method. The large [ital E]1 transition rates in [sup 152]Sm obtained in the previous study are confirmed; the [ital B]([ital E]1) systematics has been extended to [sup 154]Sm and is interpreted within the framework of the interacting boson model.

• DOE Contract Number: AC02-76CH00016; FG02-88ER40417
• OSTI ID: 6025372
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 48:3; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

663110* -- General & Average Properties of Nuclei & Nuclear Energy Levels-- (1992-)
663430 -- Nucleon-Induced Reactions & Scattering-- (1992-)
663570 -- Nuclear Mass Ranges-- A=150-189-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON REACTIONS
DOPPLER BROADENING
E1-TRANSITIONS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
GAMMA SPECTROSCOPY
HADRON REACTIONS
IN-BEAM SPECTROSCOPY
INELASTIC SCATTERING
INTERACTING BOSON MODEL
LIFETIME
LINE BROADENING
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 01-10
MULTIPOLE TRANSITIONS
NEUTRON REACTIONS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEON REACTIONS
PARITY
PARTICLE PROPERTIES
SAMARIUM 150 TARGET
SAMARIUM 152 TARGET
SAMARIUM 154 TARGET
SCATTERING
SHELL MODELS
SPECTROSCOPY
TARGETS