0308745 - ÚJF 2008 RIV US eng J - Článek v odborném periodiku
Bastin, B. - Dlouhý, Zdeněk - Mrázek, Jaromír
Collapse of the N=28 shell closure in Si-42.
[Kolaps uzavření slupky N=28 v Si-42.]
Physical Review Letters. Roč. 99, č. 2 (2007), 022503-1. ISSN 0031-9007. E-ISSN 1079-7114
Výzkumný záměr: CEZ:AV0Z10480505
Klíčová slova: shell closure * Si-42
Kód oboru RIV: BG - Jaderná, atomová a mol. fyzika, urychlovače
Impakt faktor: 6.944, rok: 2007 ; AIS: 3.218, rok: 2007

The energies of the excited states in very neutron-rich Si-42 and P-41,P-43 have been measured using in-beam gamma-ray spectroscopy from the fragmentation of secondary beams of S-42,S-44 at 39A MeV. The low 2(+) energy of Si-42, 770(19) keV, together with the level schemes of P-41,P-43, 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 Si-42 is best described as a well-deformed oblate rotor.

Měřeny exitované stavy neutronu bohatých jader Si-42,P-41,P-43.
Trvalý link: http://hdl.handle.net/11104/0161124