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2008
Journal Article
Titel
Investigation of lifetimes in the dipole band of 139Sm
Abstract
Lifetimes have been measured for a dipole band in 139Sm using DSAM. The deduced B(M1) and B(E2) values as well as B(M1)/B(E2) ratios are compared with calculations in the framework of the TAC (Tilted Axis Cranking) and SPAC (Shears mechanism with Principal Axis Cranking) models. The dipole band in 139Sm can be considered as a magnetic rotational band with a prolate or triaxial nuclear deformation.
Author(s)
Pasternak, A.A.
Forschungszentrum Jülich, Institut für Kernphysik, Jülich / A.F. Ioffe Physical Technical Instiute RAS, St. Petersburg, Russia
Lieder, E.O.
Forschungszentrum Jülich, Institut für Kernphysik, Jülich / iThemba LABS, Somerset West, South Africa / A.F. Ioffe Physical Technical Insitute RAS, St. Petersburg, Russia
Lieder, R.M.
Forschungszentrum Jülich, Institut für Kernphysik, Jülich / iThemba LABS, Somerset West, South Africa
Venkova, T.
Forschungszentrum Jülich, Institut für Kernphysik, Jülich / Bulgarian Academy of Sciences, Institute of Nuclear Research and Nuclear Energy, Sofia, Bulgaria
Angelis, G. de
Laboratori Nazionali di Legnaro, Istituto Nazionale de Fisica Nucleare, Legnaro, Italy
Bazzacco, D.
Dipartimento di Fisica dell'Universita and Istituto Nazionale di Fisica Nucleare, Sezione di Padova, Padova, Italy
Menegazzo, R.
Dipartimento di Fisica dell'Universita and Istituto Nazionale di Fisica Nucleare, Sezione di Padova, Padova, Italy
Lunardi, S.
Dipartimento di Fisica dell'Universita and Istituto Nazionale di Fisica Nucleare, Sezione di Padova, Padova, Italy
Tags
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alpha particle
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branching ratio
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DE-excitation
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E2-transition
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energy spectra
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experimental data
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gamma cascade
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gamma spectra
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heavy ion fusion reac...
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high spin state
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lifetime
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M1-transition
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MeV range 100-1000
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neutron
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proton
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rotational state
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ruthenium 99 target
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samarium 139
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strength function
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titanium 48 reaction