Publications (28)
Connection between effective-range expansion and nuclear vertex constant or asymptotic normalization coefficient
R. Yarmukhamedov, D. Baye
Explicit relations between the effective-range expansion and the nuclear vertex constant or asymptotic normalization coefficient (ANC) for the virtual decay are derived…
The R-matrix theory
P. Descouvemont, D. Baye
The different facets of the -matrix method are presented pedagogically in a general framework. Two variants have been developed over the years: The "calculable" -matrix…
Multichannel coupling with supersymmetric quantum mechanics and exactly-solvable model for Feshbach resonance
J. -M. Sparenberg, B. F. Samsonov, F. Foucart +1
A new type of supersymmetric transformations of the coupled-channel radial Schroedinger equation is introduced, which do not conserve the vanishing behavior of solutions at the ori…
Comparative variational studies of states in three- models
E. M. Tursunov, D. Baye, P. Descouvemont
Three variational approaches, the hyperspherical-harmonics, Gaussian-basis and Lagrange-mesh methods involving different coordinate systems, are compared in studies of bound-…
Updated three-body model of He decay into the + continuum
E. M. Tursunov, D. Baye, P. Descouvemont
The -decay process of the He halo nucleus into the continuum is studied in an updated three-body model. The He nucleus is described as an system in hype…
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,…
Analysing supersymmetric transformed -nucleus potentials with electric-multipole transitions
T. Arai, W. Horiuchi, D. Baye
Alpha(He)-cluster models have often been used to describe light nuclei. Towards the application to multi-cluster systems involving heavy clusters, we study the relative wave…
Gamma-delayed deuteron emission of the 6Li (0+;T=1) halo state
E. M. Tursunov, P. Descouvemont, D. Baye
M1 transitions from the Li() state at 3.563 MeV to the Li() ground state and to the continuum are studied in a three-body model. The bound states are d…
Analysis of the He decay into the continuum within a three-body model
E. M. Tursunov, D. Baye, P. Descouvemont
The beta-decay process of the He halo nucleus into the alpha+d continuum is studied in a three-body model. The He nucleus is described as an alpha+n+n system in hyperspheri…
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…
Local versus nonlocal interactions in description of C
Y. Suzuki, H. Matsumura, M. Orabi +4
Local potentials fail to describe C as a system. Nonlocal potentials that renormalize the energy-dependent kernel of the resonating group method allow in…
Hyperspherical harmonics expansion on Lagrange meshes for bosonic systems in one dimension
N. K. Timofeyuk, D. Baye
A one-dimensional system of bosons interacting with contact and single-Gaussian forces is studied with an expansion in hyperspherical harmonics. The hyperradial potentials are calc…
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…
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…
Faddeev calculation of 3 alpha and alpha alpha Lambda systems using alpha alpha resonating-group method kernel
Y. Fujiwara, K. Miyagawa, M. Kohno +3
We carry out Faddeev calculations of three-alpha (3 alpha) and two-alpha plus Lambda (alpha alpha Lambda) systems, using two-cluster resonating-group method kernels. The input incl…
Electromagnetic and weak processes with light halo nuclei
E. M. Tursunov, D. Baye, P. Descouvemont
The beta-decay of the 6He halo nucleus and the M1-transition processes of the excited 6Li(0+) state into the alpha + d continuum are studied in a three-body model. The initial nucl…
Equivalence of the Siegert-pseudostate and Lagrange-mesh R-matrix methods
D. Baye, J. Goldbeter, J. -M. Sparenberg
Siegert pseudostates are purely outgoing states at some fixed point expanded over a finite basis. With discretized variables, they provide an accurate description of scattering in…
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…
Green's function method for strength function in three-body continuum
Y. Suzuki, W. Horiuchi, D. Baye
Practical methods to compute dipole strengths for a three-body system by using a discretized continuum are analyzed. New techniques involving Green's function are developed, either…
Supersymmetric Transformations in Coupled-Channel Systems
H. Leeb, S. A. Sofianos, J. -M. Sparenberg +1
A transformation of supersymmetric quantum mechanics for N coupled channels is presented, which allows the introduction of up to N degenerate bound states without altering the rema…
11Li beta decay into 9Li and deuteron within a three-body model
D. Baye, E. M. Tursunov, P. Descouvemont
The beta decay process of the 11Li halo nucleus into 9Li and d is studied in a three-body model. The 11Li nucleus is described as a 9Li+n+n system in hyperspherical coordinates on…
Four-nucleon scattering with a correlated Gaussian basis method
S. Aoyama, K. Arai, Y. Suzuki +2
Elastic-scattering phase shifts for four-nucleon systems are studied in an - type cluster model in order to clarify the role of the tensor force and to investigate clus…
Beta delayed emission of a proton by a one-neutron halo nucleus
D. Baye, E. M. Tursunov
Some one-neutron halo nuclei can emit a proton in a beta decay of the halo neutron. The branching ratio towards this rare decay mode is calculated within a two-body potential model…
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…
One-electron atomic-molecular ions containing Lithium in a strong magnetic field
H. Olivares Pilón, D. Baye, A. V. Turbiner +1
The one-electron Li-containing Coulomb systems of atomic type and molecular type , and are studied in the presence of a strong mag…
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.…
Three-body continuum states on a Lagrange mesh
P. Descouvemont, E. M. Tursunov, D. Baye
Three-body continuum states are investigated with the hyperspherical method on a Lagrange mesh. The -matrix theory is used to treat the asymptotic behaviour of scattering wave f…
A unique decay process: beta delayed emission of a proton and a neutron by the Li halo nucleus
D. Baye, P. Descouvemont, E. M. Tursunov
The neutron-rich Li halo nucleus is unique among nuclei with known separation energies by its ability to emit a proton and a neutron in a decay process. The branching r…