OBSERVATION OF NEW NUCLIDE PA-239

Authors
YUAN SG YANG WF MOU WT ZHANG XQ LI ZW
Citation
Sg. Yuan et al., OBSERVATION OF NEW NUCLIDE PA-239, Chinese Physics Letters, 13(12), 1996, pp. 896-898
Citations number
10
Categorie Soggetti
Physics
Journal title
Chinese Physics Letters → ACNP
ISSN journal
0256307X
Volume
13
Issue
12
Year of publication
1996
Pages
896 - 898
Database
ISI
SICI code
0256-307X(1996)13:12<896:OONNP>2.0.ZU;2-V
Abstract
A new nuclide Pa-239 was produced by 50 MeV/u O-18 bombardment of natu ral uranium vis multi-nucleon transfer reactions (U-238-1p+2n). Protac tinium was chemically separated from the uranium target and other prod uced elements. Then in that chemical fraction the growth and decay of U-239 gamma rays were observed, identifying the 239 U parent as Pa-239 . Subsequent to Pa-239 beta(-) decay, with a half-life of 106+/-30 min , gamma rays of 522.0, 562.0, 638.5 and 681.0 keV were also observed.