High spin states in 89Y
States of 89Y, populated through the 87Rb(α, 2n) reaction in the energy range Eα = 30 to 55 MeV. were studied using in-beam γ-ray spectroscopy techniques. Excitation functions, γ-ray angular distributions and γ-γ coincidences were measured. Nine hitherto unknown states above 3.3 MeV were found and t...
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todo:paper_03759474_v306_n1-2_p113_Davidson2023-10-03T15:30:40Z High spin states in 89Y Davidson, M. Davidson, J. Behar, M. Bermudez, G.G. Mariscotti, M.A.J. Nuclear reaction States of 89Y, populated through the 87Rb(α, 2n) reaction in the energy range Eα = 30 to 55 MeV. were studied using in-beam γ-ray spectroscopy techniques. Excitation functions, γ-ray angular distributions and γ-γ coincidences were measured. Nine hitherto unknown states above 3.3 MeV were found and their decay modes were determined. These levels are tentatively assigned spin values from I = 13 2 up to 23 2. Their energies are found to be close to those obtained from coupling the 3-, (5)-, (6)- and(7)- states of the 88Sr core with the single-particle 9 2+ isomeric state at 908.8 keV. The validity of a weak coupling description for these high spin states is further supported by the similarites with the known 87Sr data. The analogy with 87Sr seems however to breakdown regarding the I = 15 2 highest spin member of the {3- ⊗ g9 2} multiplet. This state appears to lie significantly higher in 89Y. The data confirm the previous information existing on levels below 3.3 MeV, with the exception of a level found at 2894.3 keV and for which a tentative I = 13 2+ assignment is proposed. © 1978. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_03759474_v306_n1-2_p113_Davidson |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Nuclear reaction |
| spellingShingle |
Nuclear reaction Davidson, M. Davidson, J. Behar, M. Bermudez, G.G. Mariscotti, M.A.J. High spin states in 89Y |
| topic_facet |
Nuclear reaction |
| description |
States of 89Y, populated through the 87Rb(α, 2n) reaction in the energy range Eα = 30 to 55 MeV. were studied using in-beam γ-ray spectroscopy techniques. Excitation functions, γ-ray angular distributions and γ-γ coincidences were measured. Nine hitherto unknown states above 3.3 MeV were found and their decay modes were determined. These levels are tentatively assigned spin values from I = 13 2 up to 23 2. Their energies are found to be close to those obtained from coupling the 3-, (5)-, (6)- and(7)- states of the 88Sr core with the single-particle 9 2+ isomeric state at 908.8 keV. The validity of a weak coupling description for these high spin states is further supported by the similarites with the known 87Sr data. The analogy with 87Sr seems however to breakdown regarding the I = 15 2 highest spin member of the {3- ⊗ g9 2} multiplet. This state appears to lie significantly higher in 89Y. The data confirm the previous information existing on levels below 3.3 MeV, with the exception of a level found at 2894.3 keV and for which a tentative I = 13 2+ assignment is proposed. © 1978. |
| format |
JOUR |
| author |
Davidson, M. Davidson, J. Behar, M. Bermudez, G.G. Mariscotti, M.A.J. |
| author_facet |
Davidson, M. Davidson, J. Behar, M. Bermudez, G.G. Mariscotti, M.A.J. |
| author_sort |
Davidson, M. |
| title |
High spin states in 89Y |
| title_short |
High spin states in 89Y |
| title_full |
High spin states in 89Y |
| title_fullStr |
High spin states in 89Y |
| title_full_unstemmed |
High spin states in 89Y |
| title_sort |
high spin states in 89y |
| url |
http://hdl.handle.net/20.500.12110/paper_03759474_v306_n1-2_p113_Davidson |
| work_keys_str_mv |
AT davidsonm highspinstatesin89y AT davidsonj highspinstatesin89y AT beharm highspinstatesin89y AT bermudezgg highspinstatesin89y AT mariscottimaj highspinstatesin89y |
| _version_ |
1807315275672977408 |