Measurement of E2 transitions in the Coulomb dissociation of 8B
AIP Conf. Proc. -- December 21, 1998 -- Volume 455, pp. 890-895
Exotic nuclei and atomic masses (ENAM 98);
doi:10.1063/1.57374
Issue Date: 21 December 1998
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In an effort to understand the implications of Coulomb dissociation experiments for the determination of the 7Be(p,
) 8B reaction rate, longitudinal momentum distributions of 7Be fragments produced in the Coulomb dissociation of 44 and 81 MeV/u8B beams on a Pb target were measured. These distributions are characterized by asymmetries interpreted as the result of interference between E1 and E2 transition amplitudes in the Coulomb breakup. At the lower beam energy, both the asymmetries and the measured cross sections are well reproduced by first order perturbation theory calculations, allowing a determination of the E2 strength. The measurement yields SE2/SE1=6.7
×10−4 at the 0.63 MeV 1+ resonance. If higher order dynamical effects are not negligible, then the E2 strength extracted here is a lower limit. ©1998 American Institute of Physics.
) 8B reaction rate, longitudinal momentum distributions of 7Be fragments produced in the Coulomb dissociation of 44 and 81 MeV/u8B beams on a Pb target were measured. These distributions are characterized by asymmetries interpreted as the result of interference between E1 and E2 transition amplitudes in the Coulomb breakup. At the lower beam energy, both the asymmetries and the measured cross sections are well reproduced by first order perturbation theory calculations, allowing a determination of the E2 strength. The measurement yields SE2/SE1=6.7| Permalink: |
http://link.aip.org/link/?APCPCS/455/890/1 |
KEYWORDS and PACS
BERYLLIUM 7 TARGET,
PROTON REACTIONS,
CAPTURE,
GAMMA SPECTRA,
BORON 8,
LEAD 208 TARGET,
BORON 8 REACTIONS,
COULOMB EXCITATION,
BERYLLIUM 7,
E1-TRANSITIONS,
E2-TRANSITIONS,
proton-nucleus scattering,
beryllium,
boron,
gamma-ray spectra,
stellar internal processes
- 25.40.Lw
Nuclear reactions: specific reactions Nucleon-induced reactions Radiative capture - 27.20.+n
Properties of specific nuclei listed by mass ranges 6
A
19
- 26.30.+k
Nuclear astrophysics Nucleosynthesis in novae, supernovae and other explosive environments - 97.10.Cv
Stars Stellar characteristics and properties Stellar structure, interiors, evolution, nucleosynthesis, ages - YEAR: 1998
PUBLICATION DATA
0094-243X (print)
There are no references.





13C+p and 10B
