Universität zu Köln

Kotthaus, T., Reiter, P., Hess, H., Kalkuehler, M., Wendt, A., Wiens, A., Hertenberger, R., Morgan, T., Thirolf, P. G., Wirth, H-F and Faestermann, T. (2012). Energy splitting between the first two quasi-particle states in Pa-230 in comparison with the isotone Th-229. Phys. Lett. B, 718 (2). S. 460 - 465. AMSTERDAM: ELSEVIER SCIENCE BV. ISSN 1873-2445

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Abstract

Excited states of the odd-odd isotope Pa-230 have been identified by means of the one-neutron transfer reaction Pa-231((d) over right arrow ,t)Pa-230 at a beam energy of 22 MeV. The ground state of Pa-230 is assigned to be a 2(-) state. A sequence of four rotational states is measured on top of the ground state up to spin values of 6h. The band head of the first excited rotational band has an excitation energy of 48 key, the corresponding rotational band is observed up to a spin value of 5h. Based on the distribution of the strength among the low-lying states, the Nilsson configuration 1/2[530](p) + 3/2[631](n) is considered the most probable configuration of the ground state, leaving 1/2[530](p) - 5/2[633](n) for the second excited band. The energy difference between the band heads of these two bands is compared to similar states in other N = 139 isotones, especially the directly neighboring odd-mass isotone Th-229. Here the two neutron orbitals 5/2[633](n) and 3/2[631](n) cause an extremely low-lying isomeric state. (C) 2012 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Kotthaus, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Reiter, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Hess, H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kalkuehler, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Wendt, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Wiens, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Hertenberger, R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Morgan, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Thirolf, P. G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Wirth, H-F UNSPECIFIED UNSPECIFIED UNSPECIFIED Faestermann, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-476911
DOI:	10.1016/j.physletb.2012.10.083
Journal or Publication Title:	Phys. Lett. B
Volume:	718
Number:	2
Page Range:	S. 460 - 465
Date:	2012
Publisher:	ELSEVIER SCIENCE BV
Place of Publication:	AMSTERDAM
ISSN:	1873-2445
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language DECAY; LEVEL Multiple languages Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/47691