Munich Efforts to Search for Proton Radioactivity in Beam

Conference · Sun Dec 31 00:00:00 EST 2000

OSTI ID:783789

Faestermann, Thomas

This report will cover four topics: (1) The development of catcher techniques to detect shortlived particle radioactivities. With this setup proton emission from {sup 113}Cs and {sup 109}I has been observed for the first time (1983). Their slow decay has been realized and for the first time expressed in terms of a spectroscopic factor. (2) A discussion of various types of recoil separation schemes and experiments using an electrostatic deflector, which yielded improved decay data for {sup 113}Cs and {sup 109}I. (3) The production of proton rich nuclei by fragmentation of relativistic {sup 124}Xe and {sup 112}Sn ions at GSI and the determination of their decay properties. The beta-decay halflives of {sup 105}Sb and {sup 77}Y as well as of many other nuclei along the path of rp-process nucleosynthesis have been measured in T{sub z}=-1/2 nuclei proton decay has to compete with superallowed Fermi-decay, which is also observed for the T{sub z}= O odd-odd nuclei between {sup 78}Y and {sup 94}Ag. (4) A possible solution to the problem how to detect the proton decay of {sup 39}Sc (S{sub p}=-0.602 MeV, T{sub 1/2}{approximately}0.3 ps) and to measure its half-life.

• Research Organization: Fakultaet fuer Physik E12, Technische Universitaet Muenchen, Garching (DE)
• Sponsoring Organization: None (US)
• OSTI ID: 783789
• Report Number(s): ISBN 1-56396-937-8; ISSN 0094-243X; CODEN APCPCS; ISBN 1-56396-937-8; ISSN 0094-243X; CODEN APCPCS; TRN: US0104135
• Resource Relation: Conference: Proton-Emitting Nuclei: PROCON '99: First International Symposium, Oak Ridge, TN (US), 10/07/1999--10/09/1999; Other Information: PBD: 31 Dec 2000
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BETA DECAY
PROTON-EMISSION DECAY
FRAGMENTATION
NUCLEI
NUCLEOSYNTHESIS
ODD-ODD NUCLEI
PARTICLE PRODUCTION
RADIOACTIVITY
SPECTROSCOPIC FACTORS
CESIUM 113
IODINE 109
XENON 124
TIN 112
ANTIMONY 105
YTTRIUM 77
SILVER ISOTOPES
YTTRIUM ISOTOPES
BETA-PLUS DECAY
HALF-LIFE
SCANDIUM 39
RECOILS
ISOTOPE SEPARATORS