Investigation of high-spin states in {sup 53}Fe

The fusion-evaporation reactions {sup 28}Si({sup 32}S,1{alpha}2p1n){sup 53}Fe at 125 MeV and {sup 24}Mg({sup 32}S,2p1n){sup 53}Fe at a 95-MeV beam energy were used to investigate excited states in {sup 53}Fe. The combination of the Gammasphere Ge detector array and ancillary devices led to the const...

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Bibliographic Details
Published in:Physical review. C, Nuclear physics Nuclear physics, 2005-07, Vol.72 (1)
Main Authors: Rietz, R. du, Rudolph, D., Ekman, J., Fahlander, C., Andreoiu, C., Mineva, M.N., Williams, S.J., Bentley, M.A., Chandler, C., Hammond, G., Axiotis, M., De Angelis, G., Gadea, A., Marginean, N., Napoli, D. R., Nespolo, M., Rusu, C., Tonev, D., Ur, C.A., Carpenter, M.P.
Format: Article
Language:English
Subjects:
ALPHA PARTICLES
BRANCHING RATIO
EXCITED STATES
GAMMA SPECTRA
GAMMA SPECTROSCOPY
GE SEMICONDUCTOR DETECTORS
HEAVY ION FUSION REACTIONS
HIGH SPIN STATES
IRON 53
LIFETIME
MAGNESIUM 24 TARGET
MATRIX ELEMENTS
MEV RANGE
MIXING RATIO
NUCLEAR PHYSICS AND RADIATION PHYSICS
SHELL MODELS
SILICON 28 TARGET
SULFUR 32 REACTIONS
TWO-BODY PROBLEM
YRAST STATES
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Summary:The fusion-evaporation reactions {sup 28}Si({sup 32}S,1{alpha}2p1n){sup 53}Fe at 125 MeV and {sup 24}Mg({sup 32}S,2p1n){sup 53}Fe at a 95-MeV beam energy were used to investigate excited states in {sup 53}Fe. The combination of the Gammasphere Ge detector array and ancillary devices led to the construction of an extensive level scheme comprising some 90 transitions connecting 40 states. The lifetime of the yrast 25/2{sup -} state and upper limits for the lifetimes of a number of additional states were determined using the Cologne plunger device coupled to the GASP {gamma}-ray spectrometer. The experimental results are compared to large-scale shell-model calculations using different sets of two-body matrix elements. In particular, predictions on electromagnetic decay properties such as lifetimes, branching ratios, and mixing ratios are studied in detail.
ISSN:0556-2813
1089-490X
DOI:10.1103/PhysRevC.72.014307