Isospin symmetry and proton decay: Identification of the 10{sup +} isomer in {sup 54}Ni

Journal Article · Fri Aug 15 04:00:00 EDT 2008 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.78.021301· OSTI ID:21192085

Rudolph, D; Hellstroem, M; Andersson, L -L; Fahlander, C; Johansson, E K ^[1]; Hoischen, R ^[1]; Pietri, S; Podolyak, Zs; Regan, P H; Steer, S J ^[2]; Garnsworthy, A B ^[2]; Becker, F; Gerl, J; Gorska, M; Kojouharov, I; Kurz, N; Schaffner, H; Wollersheim, H J ^[3]; Bednarczyk, P; GrePbosz, J ^[3]

---

1. Department of Physics, Lund University, S-22100 Lund (Sweden)
2. Department of Physics, University of Surrey, Guildford, GU2 7XH (United Kingdom)
3. Gesellschaft fuer Schwerionenforschung mbH, D-64291 Darmstadt (Germany)

The {gamma} decays from an isomeric 10{sup +} state at 6457 keV in the nucleus {sub 28}{sup 54}Ni{sub 26} have been identified using the GSI fragment separator in conjunction with the RISING Ge-detector array. The state is interpreted as the isobaric analog of the 6527-keV 10{sup +} isomer in {sub 26}{sup 54}Fe{sub 28}. The results are discussed in terms of isospin-dependent shell-model calculations. Clear evidence is presented for a discrete l=5 proton decay branch into the first excited 9/2{sup -} state of the daughter {sup 53}Co. This decay is the first of its kind observed following projectile fragmentation reactions.

• OSTI ID: 21192085
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 2 Vol. 78; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COBALT 53
FRAGMENTATION
GAMMA DECAY
GE SEMICONDUCTOR DETECTORS
ISOBARIC ANALOGS
ISOMERS
ISOSPIN
MEV RANGE 01-10
NICKEL 54
NUCLEAR REACTIONS
PROTON-EMISSION DECAY
PROTONS
SHELL MODELS
SYMMETRY