Coherence features of the spin-aligned neutron-proton pair coupling scheme
2012 (English)In: Physica scripta. T, ISSN 0281-1847, Vol. T150, 014031- p.Article in journal (Refereed) Published
The seniority scheme has been shown to be extremely useful for the classification of nuclear states in semi-magic nuclei. The neutron-proton (np) correlation breaks the seniority symmetry in a major way. As a result, the corresponding wave function is a mixture of many components with different seniority quantum numbers. In this paper, we show that the np interaction may favor a new kind of coupling in N = Z nuclei, i.e. the so-called isoscalar spin-aligned np pair mode. Shell model calculations reveal that the ground and low-lying yrast states of the N = Z nuclei Pd-92 and Cd-96 may be mainly built upon such spin-aligned np pairs, each carrying the maximum angular momentum J = 9 allowed by the shell 0 g(9/2) which is dominant in this nuclear region.
Place, publisher, year, edition, pages
2012. Vol. T150, 014031- p.
Coupling scheme, Nuclear state, Quantum numbers, Shell models
Research subject SRA - E-Science (SeRC)
IdentifiersURN: urn:nbn:se:kth:diva-74416DOI: 10.1088/0031-8949/2012/T150/014031ISI: 000309605500032ScopusID: 2-s2.0-84866941222OAI: oai:DiVA.org:kth-74416DiVA: diva2:489594
FunderSwedish Research Council, 623-2009-7340 621-2010-3694 621-2010-4723Swedish e‐Science Research Center
QC 201211192012-02-032012-02-032012-11-19Bibliographically approved