6533b82cfe1ef96bd128e96d
RESEARCH PRODUCT
Continuous separation and identification of neutronrich neptunium isotopes from heavy-ion reactions by means of the centrifuge system “sisak”
N. KaffrellM. SkålbergK. J. MoodyJ. RogowskiGunnar SkarnemarkJ. V. KratzJ. AlstadNorbert TrautmannMatthias SchädelMalcolm M. FowlerK. SümmererHeinz W. GäggelerW. BrüchleGünter HerrmannH. Tetzlaffsubject
CentrifugeIsotopeChemistryNeptuniumRadiochemistryExtraction (chemistry)General Engineeringchemistry.chemical_elementHeavy ionDirect transferDecay curvedescription
Abstract Neutron-rich neptunium isotopes formed in direct transfer reactions between 136 Xe projectiles and targets of 244 Pu have been separated from other reaction products with the on-line liquid-liquid extraction system SISAK. A four-detector delay method was used to determine the half-lives of the previously unknown isotopes 243 Np and 244 Np. From the decay of the 287.4 keV γ-line a half-life of 1.8 ± 0.3 min was determined for 243 Np. From the decay curves of the γ-lines at 162.7 and 216.7 keV, which fit into the known level scheme of 244 Pu, a half-life of 2.5 ± 0.3 min results for 244 Np.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1986-08-01 | Journal of the Less Common Metals |