Observation ofK=1/2octupole deformed bands in227Th
Hammond, N. J., Jones, G. D., Butler, P. A., Humphreys, R. D., Greenlees, P. T., Jones, P. M., Julin, R., Juutinen, S., Keenan, A., Kettunen, H., Kuusiniemi, P., Leino, M., Muikku, M., Nieminen, P., Rahkila, P., Uusitalo, J., & Khlebnikov, S. V. (2002). Observation ofK=1/2octupole deformed bands in227Th. Physical Review C : Nuclear Physics, 65(6), Article 064315. https://doi.org/10.1103/PhysRevC.65.064315
Julkaistu sarjassa
Physical Review C : Nuclear PhysicsTekijät
Päivämäärä
2002Tekijänoikeudet
© 2002 American Physical Society
High-spin states in 227Th have been populated using the reaction 226Ra(α,3n)227Th at a bombarding energy of 33 MeV. The high-spin rotational structures of this nucleus have been refined and extended. In addition, the linking of these structures with the low-spin states known from 231U α decay has allowed a comprehensive decay scheme of this nucleus to be assembled for the first time. Four previously known rotational bands are interpreted as Coriolis coupled Kπ=1/2+ and Kπ=1/2− bands, in agreement with predictions using a reflection-asymmetric mean field approach. The determination of decoupling parameters for these bands is consistent with the a(Kπ=1/2+)=−a(Kπ=1/2−) rigid octupole rotor expectation. A further rotational band is interpreted as having Kπ=3/2−. Measured D0/Q0 ratios are consistent with an interpolation of the values given for neighboring even-even nuclei, providing further evidence for the significance of strong octupole correlations in this nucleus.
Julkaisija
American Physical Society (APS)ISSN Hae Julkaisufoorumista
0556-2813Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/29313750
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