Publications (32)
Extension of the ratio method to proton-rich nuclei
X. Y. Yun, F. Colomer, D. Y. Pang +1
The ratio method has been developed to improve the study of one-neutron halo nuclei through reactions. By taking the ratio of angular distributions for two processes, viz. breakup…
Are present reaction theories for studying rare isotopes good enough?
F. M. Nunes, P. Capel, R. J. Charity +7
Rare isotopes are most often studied through nuclear reactions. Nuclear reactions can be used to obtain detailed structure information but also in connection to astrophysics to det…
Recent developments in the eikonal description of the breakup of exotic nuclei
P. Capel, F. Colomer, H. Esbensen +4
The study of exotic nuclear structures, such as halo nuclei, is usually performed through nuclear reactions. An accurate reaction model coupled to a realistic description of the pr…
Influence of the projectile description on breakup calculations
P. Capel, F. M. Nunes
Calculations of the breakup of 8B and 11Be are performed with the aim of analyzing their sensitivity to the projectile description. Several potentials adjusted on the same experime…
Beta-delayed deuteron emission from 11Li: decay of the halo
R. Raabe, A. Andreyev, M. J. G. Borge +19
The deuteron-emission channel in the beta-decay of the halo-nucleus 11Li was measured at the ISAC facility at TRIUMF by implanting post-accelerated 11Li ions into a segmented silic…
Time-dependent analysis of the nuclear and Coulomb dissociation of 11Be
P. Capel, G. Goldstein, D. Baye
The breakup of 11Be on carbon and lead targets around 70 MeV/nucleon is investigated within a semiclassical framework. The role of the 5/2+ resonance is analyzed in both cases. It…
Theoretical analysis of the extraction of neutron skin thickness from coherent Ï0 photoproduction off nuclei
F. Colomer, P. Capel, M. Ferretti +5
Background: Coherent Ï0 photoproduction on heavy nuclei has been suggested as a reliable tool to infer neutron skin thicknesses. To this aim, various experiments have been perform…
Toward a complete theory for predicting inclusive deuteron breakup away from stability
G. Potel, G. Perdikakis, B. V. Carlson +12
We present an account of the current status of the theoretical treatment of inclusive reactions in the breakup-fusion formalism, pointing to some applications and making th…
Breakup reaction models for two- and three-cluster projectiles
D. Baye, P. Capel
Breakup reactions are one of the main tools for the study of exotic nuclei, and in particular of their continuum. In order to get valuable information from measurements, a precise…
Asymptotic normalization of mirror states and the effect of couplings
L. J. Titus, P. Capel, F. M. Nunes
Assuming that the ratio between asymptotic normalization coefficients of mirror states is model independent, charge symmetry can be used to indirectly extract astrophysically relev…
First Experimental Test of the Ratio Method
S. Ota, P. Capel, G. Christian +9
The ratio is a new reaction observable suggested to extract accurately structure information on halo nuclei. It corresponds to the ratio of differential cross sections for scatteri…
Peripherality of breakup reactions
P. Capel, F. M. Nunes
The sensitivity of elastic breakup to the interior of the projectile wave function is analyzed. Breakup calculations of loosely bound nuclei (8B and 11Be) are performed with two di…
One-neutron halo structure by the ratio method
P. Capel, R. C. Johnson, F. M. Nunes
We present a new observable to study halo nuclei. This new observable is a particular ratio of angular distributions for elastic breakup and scattering. For one-neutron halo nuclei…
The ratio method: a new tool to study one-neutron halo nuclei
P. Capel, R. C. Johnson, F. M. Nunes
Recently a new observable to study halo nuclei was introduced, based on the ratio between breakup and elastic angular cross sections. This new observable is shown by the analysis o…
-nucleus optical potentials from chiral effective field theory interactions
V. Durant, P. Capel
We present a determination of optical potentials for He-target collisions using the double-folding method. We use chiral effective field theory nucleon-nucleon interactions at…
Coulomb corrected eikonal description of the breakup of halo nuclei
P. Capel, D. Baye, Y. Suzuki
The eikonal description of breakup reactions diverges because of the Coulomb interaction between the projectile and the target. This divergence is due to the adiabatic, or sudden,…
Comparing non-perturbative models of the breakup of neutron-halo nuclei
P. Capel, H. Esbensen, F. M. Nunes
Breakup reactions of loosely-bound nuclei are often used to extract structure and/or astrophysical information. Here we compare three non-perturbative reaction theories often used…
Analysis of Coulomb breakup experiments of 8B with a dynamical eikonal approximation
G. Goldstein, P. Capel, D. Baye
Various measurements of the Coulomb breakup of 8B are analyzed within the dynamical eikonal approximation using a single description of 8B. We obtain a good agreement with experime…
Systematic analysis of the peripherality of the BeBe transfer reaction and extraction of the asymptotic normalization coefficient of Be bound states
J. Yang, P. Capel
We reanalyze the experiment of Schmitt on the BeBe transfer reaction [Phys. Rev. Lett. , 192701 (2012)] by exploring the beam-ene…
Near-Far Description of Elastic and Breakup Reactions of Halo Nuclei
M. S. Hussein, P. Capel, D. Baye
The angular distributions for elastic scattering and breakup of halo nuclei are analysed using a near-side/far-side decomposition within the framework of the dynamical eikonal appr…
Dissecting reaction calculations using Halo EFT and ab initio input
P. Capel, D. R. Phillips, H. -W. Hammer
We present a description of the break-up of halo nuclei in peripheral nuclear reactions by coupling a model of the projectile motivated by Halo Effective Field Theory with a fully…
Energy dependence of non-local potentials
A. E. Lovell, P. -L. Bacq, P. Capel +2
Recently a variety of studies have shown the importance of including non-locality in the description of reactions. The goal of this work is to revisit the phenomenological approach…
Influence of the halo upon angular distributions for elastic scattering and breakup
P. Capel, M. S. Hussein, D. Baye
The angular distributions for elastic scattering and breakup of halo nuclei are analysed using a near-side/far-side decomposition within the framework of the dynamical eikonal appr…
Extension of the ratio method to low energy
F. Colomer, P. Capel, F. M. Nunes +1
Background: The ratio method has been proposed as a means to remove the reaction model dependence in the study of halo nuclei. Purpose: Originally, it was developed for higher ener…
Probing the weakly-bound neutron orbit of Ne with total reaction and one-neutron removal cross sections
W. Horiuchi, Y. Suzuki, P. Capel +1
A candidate of a neutron-halo nucleus, Ne, contains a single neutron in the shell. Within the Glauber and eikonal models, we analyze reactions used to study Ne.…
Study of the Coulomb and nuclear breakup of Be using a Halo-EFT description at NLO
L. -P. Kubushishi, P. Capel
Background: The halo effective field theory (Halo-EFT) provides a very efficient description of loosely-bound nuclei in models of reaction. It offers a very systematical ranking of…
Simulating core excitation in breakup reactions of halo nuclei using an effective three-body force
P. Capel, D. R. Phillips, H. -W. Hammer
We extend our previous calculation of the breakup of 11Be using Halo Effective Field Theory and the Dynamical Eikonal Approximation to include an effective 10Be-n-target force. The…
Double-folding potentials from chiral effective field theory
V. Durant, P. Capel, L. Huth +2
The determination of nucleus-nucleus potentials is important not only to describe the properties of the colliding system, but also to extract nuclear-structure information and for…
Be-nucleus optical potentials developed from chiral effective field theory interactions
V. Durant, P. Capel
We present a determination of optical potentials for Be-nucleus collisions using the double-folding method to compute the real part and Kramers-Kronig dispersion relations t…
Deducing spectroscopic factors from wave-function asymptotics
P. Capel, P. Danielewicz, F. M. Nunes
In a coupled-channel model, we explore the effects of coupling between configurations on the radial behavior of the wave function and, in particular, on the spectroscopic factor (S…
Mechanisms of direct reactions with halo nuclei
P. Capel, F. M. Nunes, H. Esbensen +1
Halo nuclei are exotic nuclei which exhibit a strongly clusterised structure: they can be seen as one or two valence nucleons loosely bound to a core. Being observed at the ridge o…
First experimental test of the ratio method for nuclear-reaction analysis
S. Ota, P. Capel, G. Christian +9
Nuclear halos are very exotic quantal structures observed far from stability. Because of their short lifetime, they are mostly studied through reactions. The ratio method offers a…