University of Surrey

Test tubes in the lab Research in the ATI Dance Research

Collapse of the N=28 Shell Closure in 42Si

Bastin, B., Grévy, S., Sohler, D., Sorlin, O., Dombrádi, Zs., Achouri, N. L., Angélique, J. C., Azaiez, F., Baiborodin, D., Borcea, R., Bourgeois, C., Buta, A., Bürger, A., Chapman, R., Dalouzy, J. C., Dlouhy, Z., Drouard, A., Elekes, Z., Franchoo, S., Iacob, S., Laurent, B., Lazar, M., Liang, X., Liénard, E., Mrazek, J., Nalpas, L., Negoita, F., Orr, N. A., Penionzhkevich, Y., Podolyák, Zs., Pougheon, F., Roussel-Chomaz, P., Saint-Laurent, M. G., Stanoiu, M., Stefan, I., Nowacki, F. and Poves, A. (2007) Collapse of the N=28 Shell Closure in 42Si Physical Review Letters, 99 (022503). ISSN 0031-9007

[img]
Preview
PDF
fulltext.pdf

Download (181kB)

Abstract

The energies of the excited states in very neutron-rich 42Si and 41,43P have been measured using in-beam gamma-ray spectroscopy from the fragmentation of secondary beams of 42,44S at 39A MeV. The low 2+ energy of 42Si, 770(19) keV, together with the level schemes of 41,43P, provides evidence for the disappearance of the Z=14 and N=28 spherical shell closures, which is ascribed mainly to the action of proton-neutron tensor forces. New shell model calculations indicate that 42Si is best described as a well-deformed oblate rotor.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
AuthorsEmail
Bastin, B.UNSPECIFIED
Grévy, S.UNSPECIFIED
Sohler, D.UNSPECIFIED
Sorlin, O.UNSPECIFIED
Dombrádi, Zs.UNSPECIFIED
Achouri, N. L.UNSPECIFIED
Angélique, J. C.UNSPECIFIED
Azaiez, F.UNSPECIFIED
Baiborodin, D.UNSPECIFIED
Borcea, R.UNSPECIFIED
Bourgeois, C.UNSPECIFIED
Buta, A.UNSPECIFIED
Bürger, A.UNSPECIFIED
Chapman, R.UNSPECIFIED
Dalouzy, J. C.UNSPECIFIED
Dlouhy, Z.UNSPECIFIED
Drouard, A.UNSPECIFIED
Elekes, Z.UNSPECIFIED
Franchoo, S.UNSPECIFIED
Iacob, S.UNSPECIFIED
Laurent, B.UNSPECIFIED
Lazar, M.UNSPECIFIED
Liang, X.UNSPECIFIED
Liénard, E.UNSPECIFIED
Mrazek, J.UNSPECIFIED
Nalpas, L.UNSPECIFIED
Negoita, F.UNSPECIFIED
Orr, N. A.UNSPECIFIED
Penionzhkevich, Y.UNSPECIFIED
Podolyák, Zs.UNSPECIFIED
Pougheon, F.UNSPECIFIED
Roussel-Chomaz, P.UNSPECIFIED
Saint-Laurent, M. G.UNSPECIFIED
Stanoiu, M.UNSPECIFIED
Stefan, I.UNSPECIFIED
Nowacki, F.UNSPECIFIED
Poves, A.UNSPECIFIED
Date : 12 July 2007
Identification Number : 10.1103/PhysRevLett.99.022503
Additional Information : Published in Physical Review Letters, 99, 022503 (2007). © 2007 The American Physical Society.
Depositing User : Mr Adam Field
Date Deposited : 27 May 2010 14:08
Last Modified : 23 Sep 2013 18:27
URI: http://epubs.surrey.ac.uk/id/eprint/309

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year


Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800