First beta-decay spectroscopy of In-135 and new beta-decay branches of In-134

Laser-assisted nuclear decay spectroscopy of Au-176,Au-177,Au-179

ispartof: PHYSICAL REVIEW C vol:104 issue:2 status: published

Fine structure in the α decay of 218At

An α-decay study of 218At was performed at the CERN-ISOLDE facility. Laser-ionized beams of 218At were mass separated and implanted into an α−γ detection setup. Coincidence α−γ data were collected for the first time and a more precise half-life value of T1/2=1.27(6) s was measured. A new α-decay scheme was deduced based on the extracted reduced α-decay widths for fine-structure decays. The results from this work lead to a preferred spin and parity assignment of Jπ=(3−); however, Jπ=(2)− cannot be fully excluded.

Fine structure in the alpha decay of At-218

New beta-decaying state in Bi-214

13 pags., 7 figs., 3 tabs.

Laser Spectroscopy of Neutron-Rich Hg-207,Hg-208 Isotopes: Illuminating the Kink and Odd-Even Staggering in Charge Radii across the N=126 Shell Closure

(208)po populated through EC/beta(+) decay

The structure of 208Po resulting from the EC/β + decay of 208At was studied at CERN’s ISOLDE Decay Station (IDS). The high statistics afforded by the high yield of 208At and the high efficiency HPGe clusters at the IDS allowed for greater insight into lower intensity transitions and thus significant expansion of the 208Po level scheme. Furthermore, investigation into the isomeric state yielded a new half life 377(9) ns in addition to uncovering new transitions populating the state.