CARBON RADIOACTIVITY OF FR-221 AND RA-221 AND THE HINDERED DECAY OF EXOTIC ODD-A EMITTERS

Authors
BONETTI R CHIESA C GUGLIELMETTI A MIGLIORINO C MONTI P PASINETTI AL RAVN HL
Citation
R. Bonetti et al., CARBON RADIOACTIVITY OF FR-221 AND RA-221 AND THE HINDERED DECAY OF EXOTIC ODD-A EMITTERS, Nuclear physics. A, 576(1), 1994, pp. 21-28
Citations number
13
Categorie Soggetti
Physics, Nuclear
Journal title
Nuclear physics. A → ACNP
ISSN journal
03759474
Volume
576
Issue
1
Year of publication
1994
Pages
21 - 28
Database
ISI
SICI code
0375-9474(1994)576:1<21:CROFAR>2.0.ZU;2-T
Abstract
By using glass detectors in 4pi geometry we measured the spontaneous e mission of carbon clusters from two sources of Fr-221 and 221(Ra + Fr) produced at the on-line mass-separator ISOLDE at CERN, and obtained b ranching ratios lambda(cl)/lambda(alpha) = (8.79 +/- 1.14) x 10(-13) a nd (1.15 +-/ 0.91) x 10(-12) for Fr-221 and Ra-221 respectively. Such results exhibit a one-order-of-magnitude hindrance in respect to even- even father nuclei having the same penetrability for C-14 emission.