Spectroscopy of 212Po and 213At using a 8He radioactive beam and EXOGAM
- 1. Department of Physics, University of Surrey, Guildford GU2 7XH (United Kingdom)
Description
A beam of 28 MeV 8He particles with an average intensity 2 x 105 ions s-1, produced by the SPIRAL facility at GANIL, was used to initiate fusion-evaporation reactions in thick targets of 208Pb and 209Bi. Excited states of 212Po and 213At were populated in (8He,4n) reactions. The emitted γ-rays were detected using the EXOGAM array composed of four Compton suppressed germanium Clover detectors in a close geometry configuration. Preliminary results show that 212Po has been populated to high spin (I ≅ 14) with a significantly increased yield compared with our previous 8He beam experiment. An apparently increased relative population of states up to 12+ was observed compared with published results from a 208Pb(9Be,αn)212Po reaction at 48 MeV. Evidence is presented for a previously unreported de-excitation pathway: 69 keV (13-→ 12+). States up to Iπ = (39/2-) have also been observed in 213At
Availability note (English)
Available online at http://stacks.iop.org/0954-3899/31/S1851/g5_10_086.pdf or at the Web site for the Journal of Physics. G, Nuclear and Particle Physics (ISSN 1361-6471) http://www.iop.org/Additional details
Identifiers
- URL
- http://stacks.iop.org/0954-3899/31/S1851/g5_10_086.pdf; http://www.iop.org/;
- DOI
- 10.1088/0954-3899/31/10/086;
- PII
- S0954-3899(05)96658-9;
Publishing Information
- Journal Title
- Journal of Physics. G, Nuclear and Particle Physics
- Journal Volume
- 31
- Journal Issue
- 10
- Journal Page Range
- p. S1851-S1854
- ISSN
- 0954-3899
- CODEN
- JPGPED
Conference
- Title
- International conference on the interface between NUclear STructure, Astrophysics and Reactions
- Acronym
- NUSTAR 2005
- Dates
- 5-8 Jan 2005
- Place
- Guildford (United Kingdom)
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 36107864
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ASTATINE 213; BISMUTH 209 TARGET; DE-EXCITATION; EXCITED STATES; GAMMA RADIATION; GAMMA SPECTROSCOPY; GANIL CYCLOTRON; GEOMETRY; HELIUM 8 BEAMS; HELIUM 8 REACTIONS; KEV RANGE; LEAD 208 TARGET; MEV RANGE; POLONIUM 212; SPIN
- Descriptors DEC
- ACCELERATORS; ALPHA DECAY RADIOISOTOPES; ANGULAR MOMENTUM; ASTATINE ISOTOPES; BEAMS; CYCLIC ACCELERATORS; CYCLOTRONS; ELECTROMAGNETIC RADIATION; ENERGY LEVELS; ENERGY RANGE; ENERGY-LEVEL TRANSITIONS; EVEN-EVEN NUCLEI; HEAVY ION ACCELERATORS; HEAVY ION REACTIONS; HEAVY NUCLEI; ION BEAMS; IONIZING RADIATIONS; ISOCHRONOUS CYCLOTRONS; ISOTOPES; MATHEMATICS; NANOSECONDS LIVING RADIOISOTOPES; NUCLEAR REACTIONS; NUCLEI; ODD-EVEN NUCLEI; PARTICLE PROPERTIES; POLONIUM ISOTOPES; RADIATIONS; RADIOACTIVE ION BEAMS; RADIOISOTOPES; SECONDARY BEAMS; SECONDS LIVING RADIOISOTOPES; SPECTROSCOPY; TARGETS