NEUTRON DECAY OF THE ISOBARIC ANALOG STATE IN BI-209

Authors
BORDEWIJK JA BALANDA A BEAUMEL D BLOMGREN J BRANDENBURG S VANTHOF G HARAKEH MN HOFSTEE MA JANECKE J KRASZNAHORKAY A LAURENT H NILSSON L OLSSON N PERRINO R SIEBELINK R SODERMAN PO VANDERWERF SY VANDERWOUDE A
Citation
Ja. Bordewijk et al., NEUTRON DECAY OF THE ISOBARIC ANALOG STATE IN BI-209, Nuclear physics. A, 574(3), 1994, pp. 453-466
Citations number
23
Categorie Soggetti
Physics, Nuclear
Journal title
Nuclear physics. A → ACNP
ISSN journal
03759474
Volume
574
Issue
3
Year of publication
1994
Pages
453 - 466
Database
ISI
SICI code
0375-9474(1994)574:3<453:NDOTIA>2.0.ZU;2-C
Abstract
The isospin-forbidden neutron decay of the isobaric analog state in Bi -208 has been measured, following its excitation via the Pb-208(He-3, t)Bi-208 reaction at 61.2 MeV. In contrast to the proton decay, which is direct, the neutron decay spectrum has a statistical shape. Its bra nching ratio is determined to be (37 +/- 3)%. The results suggest that the damping of the isospin impurity is fast. Therefore, neutron decay results mostly from the final stage of the damping process and does n ot contribute to the width of the IAS.