Speaker
Vinzenz Bildstein
(University of Guelph)
Description
The T-REX setup was built to use the post-accelerated radioactive beams from REX-ISOLDE to study isotopes far from stability using transfer reactions in inverse kinematics.
The first experiments performed with T-REX aimed at a better understanding of the "Island of Inversion", a region in the nuclear chart near $^{32}$Mg where the narrowing of the $N = 20$ gap and pairing correlations can lead to deformed ground states with $2p-2h$ configurations.
We will present results from d($^{30}$Mg,p)$^{31}$Mg, determining for the first time the negative parity of the second excited state at 221 keV.
The experiment also showed a cross section for this second excited state that is a factor four lower than the cross sections of the ground state and the first excited state when compared to DWBA calculations.
This might be an indication of a possible shape co-existence of an oblate deformed second excited state and prolate deformed ground and first excited state.
The second experiment performed with T-REX in the Island of Inversion was the t($^{30}$Mg,p)$^{32}$Mg experiment which identified the proposed shape coexisting excited $0^{+}$ state to be at 1058 keV.
This is much lower than any prediction by theoretical models.
Primary author
Vinzenz Bildstein
(University of Guelph)
Co-authors
Dr
Kathrin Wimmer
(NSCL)
Prof.
Piet Van Duppen
(KU Leuven)
Prof.
Reiner Kr\"ucken
(TRIUMF)
Prof.
Riccardo Raabe
(KU Leuven)
Dr
Roman Gernh\"auser
(TU M\"unchen)
Prof.
Thorsten Kr\"oll
(TU Darmstadt)
