Possible evidence for four-particle, four-hole excitations in sup 146 Gd

Journal Article · Mon Jan 01 04:00:00 EST 1990 · Physical Review, C (Nuclear Physics); (USA)

DOI:https://doi.org/10.1103/PhysRevC.41.280· OSTI ID:6915144

Heyde, K ^[1]; Meyer, R A ^[2]

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1. Institute for Nuclear Physics, Proeftuinstraat 86, B-9000 Gent, (Belgium) Institute for Theoretical Physics, Proeftuinstraat 86, B-9000 Gent, Belgium (BE)
2. Division of Nuclear Physics, U.S. Department of Energy, Washington, D.C. 20545 Nuclear Chemistry Division, Lawrence Livermore National Laboratory, Livermore, California 94550 (USA)

Excitation in the reaction {sup 148}Gd({ital p},{ital t}){sup 146}Gd to a 0{sup +} level at 4.534 MeV can be identified with a proton two-particle, two-hole (2p-2h), neutron 2p-2h configuration where the proton 2p-2h configurations act across the {ital Z}=64 gap (particle moving in the 1{ital h}{sub 11/2} orbital) and the neutron 2p-2h configuration acts across the {ital N}=82 closed shell. Here holes are moving mainly in the 1{ital h}{sub 11/2} orbital, and the particles move in the high-{ital j} 2{ital f}{sub 7/2}, 1{ital h}{sub 9/2}, and 1{ital i}{sub 13/2} orbitals. A calculation for the position of this 0{sup +} 4p-4h configuration was performed starting from the proton and neutron pairing excitations and using a four-level model with residual proton-neutron interactions. This model predicts an energy of 4.76 MeV for the 4p-4h 0{sup +} state, and the resultant model wave functions can qualitatively explain the transfer reaction cross sections. Existence of a 4p-4h band structure is discussed.

• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6915144
• Journal Information: Physical Review, C (Nuclear Physics); (USA), Journal Name: Physical Review, C (Nuclear Physics); (USA) Vol. 41:1; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

653001* -- Nuclear Theory-- Nuclear Structure
Moments
Spin
& Models
653003 -- Nuclear Theory-- Nuclear Reactions & Scattering
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR MOMENTUM
BAND THEORY
BARYON REACTIONS
BARYON-BARYON INTERACTIONS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DAYS LIVING RADIOISOTOPES
DIRECT REACTIONS
ELECTRON CAPTURE RADIOISOTOPES
ENERGY LEVELS
EVEN-EVEN NUCLEI
FUNCTIONS
GADOLINIUM 146
GADOLINIUM 148 TARGET
GADOLINIUM ISOTOPES
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
INTERACTIONS
INTERMEDIATE MASS NUCLEI
ISOTOPES
MATHEMATICAL MODELS
MULTI-NUCLEON TRANSFER REACTIONS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUCLEON-NUCLEON INTERACTIONS
PARITY
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
PARTICLE-HOLE MODEL
PICKUP REACTIONS
PROTON REACTIONS
PROTON-NEUTRON INTERACTIONS
PROTON-NUCLEON INTERACTIONS
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
SHELL MODELS
SPIN
TARGETS
TRANSFER REACTIONS
TRITONS
TWO-NUCLEON TRANSFER REACTIONS
WAVE FUNCTIONS