IMPROVED HALF-LIFE MEASUREMENT OF PA-224 AND ITS BI-209(O-18,3N)PA-224 PRODUCTION CROSS-SECTION

Authors
WILK PA GREGORICH KE HENDRICKS MB LANE MR LEE DM MCGRATH CA SHAUGHNESSY DA STRELLIS DA SYLWESTER ER HOFFMAN DC
Citation
Pa. Wilk et al., IMPROVED HALF-LIFE MEASUREMENT OF PA-224 AND ITS BI-209(O-18,3N)PA-224 PRODUCTION CROSS-SECTION, Physical review. C. Nuclear physics, 56(3), 1997, pp. 1626-1628
Citations number
13
Categorie Soggetti
Physics, Nuclear
Journal title
Physical review. C. Nuclear physics → ACNP
ISSN journal
05562813
Volume
56
Issue
3
Year of publication
1997
Pages
1626 - 1628
Database
ISI
SICI code
0556-2813(1997)56:3<1626:IHMOPA>2.0.ZU;2-H
Abstract
Pa-224 was produced via the Bi-209(O-18,3n) reaction at the Lawrence B erkeley National Laboratory 88-Inch Cyclotron and the half-life was de termined to be 850+/-20 ms by measuring its alpha decay using our rota ting wheel system. Our value is consistent with a previously reported half-life of 950+/-150 ms for Pa-224 produced via the Tl-205(Ne-22,3n) reaction, but its much more precise. The cross section for the Bi-209 (O-18,3n)Pa-224 reaction was measured to be 0.5+/-0.1 mb for 87-89 MeV O-18(5+) projectiles incident on the target.