Published April 1994
| Version v1
Book
Coulomb excitation of bound excited states of the neutron halo
Creators
- Anne, R.1
- Bazin, D.1
- Corre, J.M.1
- Lewitowicz, M.1
- Saint-laurent, M.G.1
- Jonson, B.2
- Nilsson, T.2
- Nyman, G.2
- Wilhelmsen-Rolander, K.2
- Bimbot, R.3
- Dogny, S.3
- Guillemaud-Mueller, D.3
- Mueller, A.C.3
- Pougheon, F.3
- Sorlin, O.3
- Emling, H.4
- Schrieder, G.4
- Hansen, P.G.5
- Hornshoj, P.5
- Jensen, P.5
- Riisager, K.5
- Neugart, R.6
- Borge, M.G.J.7
- Tengblad, O.7
- 1. Grand Accelerateur National d'Ions Lourds (GANIL), 14 - Caen (France)
- 2. Chalmers Univ. of Technology, Goeteborg (Sweden)
- 3. Paris-11 Univ., 91 - Orsay (France). Inst. de Physique Nucleaire
- 4. Gesellschaft fuer Schwerionenforschung mbH, Darmstadt (Germany)
- 5. Aarhus Univ. (Denmark). Inst. of Physics
- 6. Mainz Univ. (Germany). Inst. fuer Physik
- 7. European Organization for Nuclear Research, Geneva (Switzerland)
Description
A new method, based on Coulomb excitation of radioactive beam, permits for the first time the spectroscopy of E1- excitations of nuclei with a neutron halo. The γ transitions of the de-excitation are clearly identified by the Doppler shift. We could thus observe the transition 1/2-→ 1/2+ of 11Be and determine its Coulomb excitation cross section. It is interesting that this number is about a factor two smaller than that calculated from the measured lifetime of the state. Explanations are in progress. Limits are presented for the excitation of hypothetical bound excited states in 12,14Be and 8He halo nuclei. (authors). 8 refs., 9 figs
Additional details
Publishing Information
- Publisher
- Grand Accelerateur d'Ions Lourds.
- Imprint Place
- Caen (France)
- Imprint Title
- Nuclear physics at Ganil. A compilation 1992-1993
- Imprint Pagination
- 264 p.
- Journal Page Range
- p. 6-10.
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 26039011
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Descriptors DEI
- BERYLLIUM 11; BERYLLIUM 12; BERYLLIUM 14; BINDING ENERGY; BOUND STATE; COULOMB EXCITATION; CROSS SECTIONS; DE-EXCITATION; E1-TRANSITIONS; GAMMA DECAY; GAMMA SPECTROSCOPY; GANIL CYCLOTRON; HELIUM 8
- Descriptors DEC
- ACCELERATORS; BERYLLIUM ISOTOPES; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CYCLIC ACCELERATORS; CYCLOTRONS; DECAY; ENERGY; ENERGY-LEVEL TRANSITIONS; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; EXCITATION; HEAVY ION ACCELERATORS; HELIUM ISOTOPES; ISOCHRONOUS CYCLOTRONS; ISOTOPES; LIGHT NUCLEI; MILLISEC LIVING RADIOISOTOPES; MULTIPOLE TRANSITIONS; NUCLEAR DECAY; NUCLEI; RADIOISOTOPES; SECONDS LIVING RADIOISOTOPES; SPECTROSCOPY