Resonant tunneling through the triple-humped fission barrier of 236U

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

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

The fission probability of 236U as a function of the excitation energy has been measured with high energy resolution using the 235U(d, pf) reaction in order to study hyperdeformed (HD) rotational bands. Rotational band structures with a moment of inertia of θ=217±38 ℏ2/MeV have been observed, 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 2.7±0.4 MeV. 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 EA=5.05±0.20 MeV and its curvature parameter ℏωA=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
Pages (from-to)175-185
Number of pages11
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume615
Issue number3-4
DOIs
Publication statusPublished - Jun 2 2005

    Fingerprint

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Csatlós, M., Krasznahorkay, A., Thirolf, P. G., Habs, D., Eisermann, Y., Faestermann, T., Graw, G., Gulyás, J., Harakeh, M. N., Hertenberger, R., Hunyadi, M., Maier, H. J., Máté, Z., Schaile, O., & Wirth, H. F. (2005). Resonant tunneling through the triple-humped fission barrier of 236U. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 615(3-4), 175-185. https://doi.org/10.1016/j.physletb.2005.04.042