Orbital dependent nucleonic pairing in the lightest known isotopes of tin
Nuclear Experiment
2010-10-27 v1 Nuclear Theory
Abstract
By studying the 109Xe-->105Te-->101Sn superallowed alpha-decay chain, we observe low-lying states in 101Sn, the one-neutron system outside doubly magic 100Sn. We find that the spins of the ground state (J = 7=2) and first excited state (J = 5=2) in 101Sn are reversed with respect to the traditional level ordering postulated for 103Sn and the heavier tin isotopes. Through simple arguments and state-of-the-art shell model calculations we explain this unexpected switch in terms of a transition from the single-particle regime to the collective mode in which orbital-dependent pairing correlations, dominate.
Keywords
Cite
@article{arxiv.1009.2162,
title = {Orbital dependent nucleonic pairing in the lightest known isotopes of tin},
author = {Iain G. Darby and Robert K. Grzywacz and Jon C. Batchelder and Carrol R. Bingham and Lucia Cartegni and Carl J. Gross and Morten Hjorth-Jensen and David T. Joss and Sean N. Liddick and Witold Nazarewicz and Stephen Padgett and Robert D. Page and Thomas Papenbrock and Mustafa M. Rajabali and Jimmy Rotureau and Krzysztof P. Rykaczewski},
journal= {arXiv preprint arXiv:1009.2162},
year = {2010}
}
Comments
5 pages 3 figures