Hyperdeformed rotational bands observed in the actinide region

A. Krasznahorkay, M. Csatlós, Y. Eisermann, T. Faestermann, G. Graw, J. Gulyás, D. Habs, M. N. Harakeh, R. Hertenberger, M. Hunyadi, H. J. Maier, Z. Máté, O. Schaile, P. G. Thirolf, H. J. Wirth

Research output: Conference contribution

1 Citation (Scopus)

Abstract

The fission probability of 234,236U as a function of the excitation energy has been measured with high energy resolution using the 233,235U(d, pf) reactions in order to study hyperdeformed (HD) rotational bands. Rotational band structures with a moment of inertia of = 238 ± 42 2/MeV and = 217 ± 38 2/MeV have been observed for 234,236U, respectively, corresponding to hyperdeformed configurations. From the level density of the rotational bands the excitation energy of the ground state in the third minimum was determined to be E III = 3.1 ± 0.4 MeV and EIII = 2.7 ± 0.4 MeV, for 234U and for 236U, respectively. The excitation energy of the lowest hyperdeformed transmission resonance and the energy dependence of the fission isomer population probability enabled the determination of the height of the inner fission barrier of 236U EA = 5.15±0.20 MeV and its curvature parameter ωA=1.2 MeV. Using this new method the long-standing uncertainties in determining the height of the inner potential barrier in uranium isotopes could be resolved.

Original languageEnglish
Title of host publicationCAPTURE GAMMA-RAY SPECTROSCOPY AND RELATED TOPICS
Subtitle of host publication12th International Symposium
Pages439-446
Number of pages8
DOIs
Publication statusPublished - márc. 13 2006
Event12th International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics - Notre Dame, IN, United States
Duration: szept. 4 2005szept. 9 2005

Publication series

NameAIP Conference Proceedings
Volume819
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other12th International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics
CountryUnited States
CityNotre Dame, IN
Period9/4/059/9/05

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Krasznahorkay, A., Csatlós, M., Eisermann, Y., Faestermann, T., Graw, G., Gulyás, J., Habs, D., Harakeh, M. N., Hertenberger, R., Hunyadi, M., Maier, H. J., Máté, Z., Schaile, O., Thirolf, P. G., & Wirth, H. J. (2006). Hyperdeformed rotational bands observed in the actinide region. In CAPTURE GAMMA-RAY SPECTROSCOPY AND RELATED TOPICS: 12th International Symposium (pp. 439-446). (AIP Conference Proceedings; Vol. 819). https://doi.org/10.1063/1.2187897