ELFT HÍRADÓ

[Zoltan Mate <mate AT namafia.atomki.hu>]

Az MTA Atommagkutató Intézetének nagy előadójában
(Debrecen, Bem tér 18/c. 12. ép. III. em.)
2011. február 7-én, HÉTFŐN 11:00-kor


                     Berta Rubio
     (Instituto de Física Corpuscular, Valencia, Spain)

              From Rising to NUSTAR-FAIR


címmel előadást tart.

Az előadás előtt 10:30-tól tea.
Vendégeket szívesen látunk.

             
                                        Máté Zoltán


Abstract
In this talk I will present the experimental program of NUSTAR (Nuclear 
STructure, Astrophysics and Reactions), a part of the FAIR facility 
(Facility for Antiprotons and Ion Research) that focuses on the production 
and exploitation of beams of radioactive nuclei created by the 
fragmentation method and separated with the Super-FRS. Most of the 
experiments will focus on various kinds of nuclear reaction; reactions 
with radioactive beams at relativistic energies, reactions using stored 
and cooled beams, in-beam spectroscopy, electron - radioactive beam 
scattering, etc. A sizeable part of the experimental activity will also be 
devoted to the direct production of beams of rare exotic nuclei for the 
study of their ground state or isomeric decays and properties. As an 
example of the kind of experiments which will be carried out at the future 
facility I will present an experiment recently carried out at the fragment 
separator facility at GSI, the FRS, in combination with the powerful 
Rising Ge array. We have studied the Tz = -1   0 beta decays of 42Ti, 
46Cr, 50Fe and 54Ni to the self-conjugate nuclei 42Sc, 46V, 50Mn and 54Co, 
respectively.  The mirror (3He,t) reaction has been carried out at RCNP 
Osaka. The B(GT) values obtained from both experiments will be compared. 
An interesting observation in the present experiments is the predominant 
M1 decay of the T=0, 1+ states populated in the beta decay to the T=1, 0+ 
g.s.. This is consistent with the absence of the IV term in the M1 
transition probability here since it cannot connect states with T=0, in 
contrast with the general case where the IV dominates the M1 transition 
probability. This selection rule, called a  "Quasi-rule" by Warburton and 
Weneser (D.H. Wilkinson "Isospin in Nuclear Physics", 1969, SBN 7204 0155 
0) is observed for the first time in the fp shell nuclei.