Coulomb Excitation of 26Ne

Journal Article · Mon Feb 26 04:00:00 EST 2007 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2713517· OSTI ID:21056739

Beaumel, D; Blumenfeld, Y; Fortier, S; Frascaria, N; Lima, V ^[1]; Gibelin, J ^[1]; Motobayashi, T; Aoi, N; Baba, H; Fukuda, N; Gomi, T; Kubo, T; Takeuchi, S; Yanagisawa, Y; Yoshida, K ^[2]; Elekes, Z ^[3]; Ishikawa, K; Kondo, Y; Nakamura, T; Satou, Y ^[4]

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1. Instiut de physique nucleaire, 15 rue G.Clemenceau 91406 Orsay cedex (France)
2. RIKEN, Heavy-Ion science lab., 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan)
3. Institute of Nuclear Research of the Hungarian Academy of Sciences, PO Box 51, H-4001 Debrecen (Hungary)
4. Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551 (Japan)

Coulomb excitation of the exotic neutron-rich nucleus 26Ne on a 208Pb target was measured at 58 A.MeV in order to search for low-lying E1 strength above the neutron emission threshold. Data were also taken on an Al target to estimate the nuclear contribution. The radioactive beam was produced by fragmentation of a 95 A.MeV Ar beam delivered by the RIKEN Research Facility. The set-up included a NaI gamma-ray array, a charged fragment hodoscope and a neutron wall. Using the invariant mass method in the 25Ne+n channel, we observe a sizable amount of E1 strength between 6 and 10 MeV excitation energy. By performing a multipole decomposition of the differential cross-section, a reduced dipole transition probability of B(E1)=0.49{+-}0.16 e2fm2 is deduced. For the first time, the decay pattern of low-lying strength in a neutron-rich nucleus is measured.

• OSTI ID: 21056739
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 891; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COULOMB EXCITATION
DIFFERENTIAL CROSS SECTIONS
E1-TRANSITIONS
GAMMA RADIATION
HEAVY ION REACTIONS
JAPANESE ORGANIZATIONS
LEAD 208
LEAD 208 TARGET
MEV RANGE
NAI DETECTORS
NEON 25
NEON 26
NEUTRON EMISSION
NEUTRON-RICH ISOTOPES
NEUTRONS
NUCLEAR FRAGMENTATION
NUCLEAR FRAGMENTS
PROBABILITY