Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
HK: Physik der Hadronen und Kerne
HK 16: Nuclear Structure/Spectroscopy II
HK 16.3: Vortrag
Dienstag, 9. März 2004, 16:30–16:45, A
From spherical 34Si to deformed 32Mg: static moments of neutron rich Al-isotopes — •Pieter Himpe1, Gerda Neyens1, Dana Borremans1, Nele Vermeulen1, Deyan Yordanov1, Ketel Turzo1, Stephen Mallion1, Nadya Smirnova2, Georgi Georgiev3, Jean-Michel Daugas4, Victor Meot4, Iolanda Matea3, Dimiter Balabanski5, Yu.E. Penionzhkevich6, M Staniou3, Francois De Oliveira Santos3, Gilles de France3, and Magda Kowalska7 — 1Dept. Natuurkunde, KULeuven — 2Ghent University — 3GANIL — 4Bruyeres le Chatel — 5St. Kliments Ohridsky University of Sofia — 6JINR-Dubna — 7Inst. fur Physik, Univ. Mainz
In 1975 Thibault et al. discovered that 31-32Na are much stronger bound than expected. Today we know that this is due to low lying intruder states in this region, called ’the island of inversion’. The ground state of 34Si (Z=14) is not influenced by the intruder states, while 32Mg (Z=12), on the contrary, is a well deformed nucleus.
Using the NMR technique on polarised Al nuclei we measured the g-factor of 32-33Al, nuclei in between 34Si and 32Mg, using a polarized fragment beam from the LISE separator at GANIL. These results give an indication that the ground state of 32Al is normal and that the 2p-2h intruder state influences the ground state of 33Al. In the future we will measure the quadrupole moment of these nuclei to get more insight on their deformation.