Universität zu Köln

Kotthaus, T., Reiter, P., Bruyneel, B., Chatzistamatiou, M., Eberth, J., Gersch, G., Hess, H., Stefanescu, I., Warr, N., Weisshaar, D., Wiens, A., Morgan, T., Lutter, R., Schwerdtfeger, W., Thirolf, P. G., Bringel, P., Huebel, H. and Neusser-Neffgen, A. (2013). Spectroscopy of excited states in U-234 and search for a two-phonon state in U-234. Phys. Rev. C, 88 (6). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1089-490X

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Abstract

Excited states of the isotope U-234 were studied employing the one-neutron transfer reaction U-235(d, t)U-234 at a beam energy of 11 MeV. The reaction channel was selected by an identification of the outgoing tritons in a Delta E-E measurement. In coincidence with the tritons, gamma rays were also detected with the highly efficient MINIBALL spectrometer. Based on the analysis of gamma gamma coincidence data, the level scheme of U-234 was extended. The 4(+) state at an energy of 1886.7 keV provides evidence for a possible two-phonon gamma gamma excitation, which is based on three gamma transitions from this state to the gamma vibrational band. However, this state is populated with a high cross section via the one-neutron transfer reaction, which is not expected for a highly collective excitation. The situation is compared to other known cases from the rare-earth region and to the neighboring isotone Th-232, which so far is the only known case for a two-phonon excitation in the actinide region.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Kotthaus, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Reiter, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bruyneel, B. UNSPECIFIED UNSPECIFIED UNSPECIFIED Chatzistamatiou, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Eberth, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Gersch, G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Hess, H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Stefanescu, I. UNSPECIFIED UNSPECIFIED UNSPECIFIED Warr, N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Weisshaar, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Wiens, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Morgan, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Lutter, R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Schwerdtfeger, W. UNSPECIFIED UNSPECIFIED UNSPECIFIED Thirolf, P. G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bringel, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Huebel, H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Neusser-Neffgen, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-470260
DOI:	10.1103/PhysRevC.88.064306
Journal or Publication Title:	Phys. Rev. C
Volume:	88
Number:	6
Date:	2013
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	1089-490X
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language COULOMB-EXCITATION; VIBRATIONAL-STATES; TRANSITIONS; NUCLEI Multiple languages Physics, Nuclear Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/47026