Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2007-03-16
Phys.Lett.B650:124-128,2007
Physics
Nuclear Physics
Nuclear Theory
5 pages, 2 figures, accepted for publication in Phys. Lett. B
Scientific paper
10.1016/j.physletb.2007.05.003
The $B$(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.
Angelique J.-C.
Ashwood N. I.
Bouchat V.
Catford W. N.
Clarke N. M.
No associations
LandOfFree
B(E1) Strengths from Coulomb Excitation of 11Be does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with B(E1) Strengths from Coulomb Excitation of 11Be, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and B(E1) Strengths from Coulomb Excitation of 11Be will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-433011