Spectroscopy of 193,195,197Po

Excited states built on the 13/21 isomers of the odd-mass 193,195,197Po isotopes have been observed via in-beam g-ray spectroscopy. The a radioactivity of these isotopes has been used to tag g -ray transitions following the AEr1164 MeV 32S reactions, where A5164, 166, 167, 168, and 170. Prompt g radiation was measured by ten Compton-suppressed Ge detectors at the target position and the Fragment Mass Analyzer was used to select evaporation residues. The results are compared with the first excited states of the heavier odd-mass polonium isotopes and of the even-mass cores

Behavior of intruder based states in light Bi and Tl isotopes: the study of 187^{187}Bi α\alpha decay

The excitation energies of the single-particle normal and intruder levels in both $^{183}$Tl and $^{187}$Bi were measured for the first time via the $\alpha$ decay of $^{187}$Bi produced in the $^{97}$Mo($^{92}$Mo,pn)$^{187}$Bi reaction. The previously unobserved $^{187}$Bi ground state (h$_{9/2}$) to $^{183}$Tl ground state (s$_{1/2}$) $\alpha$ transition was identified, establishing the $^{187}$Bi intruder state excitation energy to be 112(21) keV, 70 keV less than that of the same level in $^{189}$Bi

Proton and α radioactivity below the Z=82 shell closure

none21Ground and isomeric proton and alpha decay branches are reported for the new isotope 177Tl, produced by bombarding a 102Pd target with a 370 MeV beam of 78Kr ions. The ground state is assigned as a πs1/2 configuration and the high spin isomer is assigned as a (πh11/2)-1 configuration. The ground-state proton decay of 171Au has been identified for the first time, produced by bombarding a 96Ru target with 78Kr ions. The 171Au ground state is also assigned as a πs1/2 configuration. Spectroscopic factors, masses, and proton separation energies are derived using these new proton decay measurements. New ground-state α decays for 169Ir and 173Au are also reported.noneG. Poli;C. Davids;P. Woods;D. Seweryniak;J. Batchelder;L. Brown;C. Bingham;M. Carpenter;L. Conticchio;T. Davinson;J. DeBoer;S. Hamada;D. Henderson;R. Irvine;R. Janssens;H. Maier;L. Müller;F. Soramel;K. Toth;W. Walters;J. WautersG., Poli; C., Davids; P., Woods; D., Seweryniak; J., Batchelder; L., Brown; C., Bingham; M., Carpenter; L., Conticchio; T., Davinson; J., Deboer; S., Hamada; D., Henderson; R., Irvine; R., Janssens; H., Maier; L., Müller; Soramel, Francesca; K., Toth; W., Walters; J., Wauter