B(E1) Strengths from Coulomb Excitation of 11Be

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dc.creatorSummers, N. C.
dc.creatorPain, S. D.
dc.creatorOrr, N. A.
dc.creatorCatford, W. N.
dc.creatorAngelique, J. C.
dc.creatorAshwood, N. I.
dc.creatorBouchat, V.
dc.creatorClarke, N. M.
dc.creatorCurtis, N.
dc.creatorFreer, M.
dc.creatorFulton, B. R.
dc.creatorHanappe, F.
dc.creatorLabiche, M.
dc.creatorLecouey, J. L.
dc.creatorLemmon, R. C.
dc.creatorMahboub, D.
dc.creatorNinane, A.
dc.creatorNormand, G.
dc.creatorNunes, F. M.
dc.creatorSoic, N.
dc.creatorStuttge, L.
dc.creatorTimis, C. N.
dc.creatorThompson, I. J.
dc.creatorWinfield, J. S.
dc.creatorZiman, V.
dc.date2007-03-16
dc.date2007-05-10
dc.date.accessioned2026-07-07T10:38:41Z
dc.date.available2026-07-07T10:38:41Z
dc.descriptionThe $B$(E1;$1/2^+\to1/2^-$) strength for $^{11}$Be has been extracted from intermediate energy Coulomb excitation measurements, over a range of beam energies using a new reaction model, the extended continuum discretized coupled channels (XCDCC) method. In addition, a measurement of the excitation cross section for $^{11}$Be+$^{208}$Pb at 38.6 MeV/nucleon is reported. The $B$(E1) strength of 0.105(12) e$^2$fm$^2$ derived from this measurement is consistent with those made previously at 60 and 64 MeV/nucleon, i n contrast to an anomalously low result obtained at 43 MeV/nucleon. By coupling a multi-configuration description of the projectile structure with realistic reaction theory, the XCDCC model provides for the first time a fully quantum mechanical description of Coulomb excitation. The XCDCC calculations reveal that the excitation process involves significant contributions from nuclear, continuum, and higher-order effects. An analysis of the present and two earlier intermediate energy measurements yields a combined B(E1) strength of 0.105(7) e$^2$fm$^2$. This value is in good agreement with the value deduced independently from the lifetime of the $1/2^-$ state in $^{11}$Be, and has a comparable p recision.
dc.description5 pages, 2 figures, accepted for publication in Phys. Lett. B
dc.identifierhttps://arxiv.org/abs/nucl-th/0703055
dc.identifierhttp://arxiv.org/abs/nucl-th/0703055
dc.identifierPhys.Lett.B650:124-128,2007
dc.identifierdoi:10.1016/j.physletb.2007.05.003
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/180807
dc.subjectNuclear Theory
dc.titleB(E1) Strengths from Coulomb Excitation of 11Be
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