0000000000603025
AUTHOR
D. Pérez-loureiro
Experimental study of fragmentation products in the reactions112Sn+112Snand124Sn+124Snat 1AGeV
Production cross sections and longitudinal velocity distributions of the projectilelike residues produced in the reactions ${}^{112}\text{Sn}+{}^{112}\text{Sn}$ and ${}^{124}\text{Sn}+{}^{124}\text{Sn}$, both at an incident beam energy of 1$A$ GeV, were measured with the high-resolution magnetic spectrometer, the Fragment Separator of GSI. For both reactions the characteristics of the velocity distributions and nuclide production cross sections were determined for residues with atomic number $Z\ensuremath{\ge}10$. A comparison of the results of the two reactions is presented.
Tz=−1→0βdecays ofNi54,Fe50,Cr46, andTi42and comparison with mirror(He3,t)measurements
We have studied the β decay of the Tz=−1, f7/2 shell nuclei Ni54, Fe50, Cr46, and Ti42 produced in fragmentation reactions. The proton separation energies in the daughter Tz=0 nuclei are relatively large (≈4–5 MeV) so studies of the γ rays are essential. The experiments were performed at GSI as part of the Stopped-beam campaign with the RISING setup consisting of 15 Euroball Cluster Ge detectors. From the newly obtained high precision β-decay half-lives, excitation energies, and β branching ratios, we were able to extract Fermi and Gamow-Teller transition strengths in these β decays. With these improved results it was possible to compare in detail the Gamow-Teller (GT) transition strengths …
Synthesis ofN=127isotones through (p,n) charge-exchange reactions induced by relativistic208Pb projectiles
The production cross sections of four N=127 isotones ({sup 207}Hg, {sup 206}Au, {sup 205}Pt, and {sup 204}Ir) have been measured using (p,n) charge-exchange reactions, induced in collisions of a {sup 208}Pb primary beam at 1 A GeV with a Be target. These data allow one to investigate the use of a reaction mechanism to extend the limits of the chart of nuclides toward the important r-process nuclei in the region of the third peak of elemental abundance distribution.