Four-body calculation of elastic deuteron-deuteron scattering

Abstract

Fully converged calculations of deuteron-deuteron elastic scattering observables are performed at energies above three-and four-body breakup threshold. Differential cross sections and analyzing powers are obtained using realistic nucleon-nucleon force models together with the Coulomb repulsion between protons. For all observables we find a very reasonable agreement with the available experimental data limited to deuteron beam energies up to 25.3 MeV.

Calculation of three-body nuclear reactions with angular-momentum and parity-dependent optical potentials

“…Based on this fact we conclude that L-and π-dependent terms in the OP may be quite irrelevant for three-body scattering but the nonlocality plays a major role, especially in transfer reactions; the latter finding is in accordance with Refs. [14,[31][32][33]. The comparison of predictions and data for deuteron analyzing powers in d + 16 O elastic scattering is less conclusive.…”

New developments in reaction theory: preparing for the FRIB era

“…The Faddeev method of [7] cannot be applied to intermediate and heavy mass targets due to the complications that arise with screening the Coulomb interaction. Mukhamedzhanov et al [8] rewrote the Faddeev equations in the Coulomb basis using separable interactions.…”

“…A couple of years ago, the full Faddeev formalism was extended to include core excitation [7]. This method was used to explore the role of core excitation in (d,p) reactions, and understand the origin of the dynamical effects [3].…”

“…), but then adjusted the interaction to produce a number of models with different separation energies ranging S n = 0.1 − 5.0 MeV. We then applied the method of [7], which includes dynamical core excitation in the reaction mechanism to all orders, to the 10 Be(d,p) 11 Be like reactions, and studied the excitation effects for beam energies from the range E d = 15 − 90 MeV [3]. We compared the resulting angular distributions and the spectroscopic factor that would be extracted from the cross sections, when including dynamical core excitation in the reaction model (S f add ), to that of the original structure model S th .…”

Four-body calculation of H2(d,p)H3 and Deltuva1, Fonseca2 2017Phys. Rev. CSelf Cite

“…In the last 10 years significant progress has taken place in exact ab initio calculations of two-cluster scattering in the four-nucleon system, both below [1][2][3][4][5][6][7][8][9] and above [10][11][12][13][14][15][16][17] the breakup threshold. In the case of multichannel reactions, i.e., processes with open rearrangements and/or breakup channels, the most advanced calculations were performed by solving the Alt, Grassberger, and Sandhas (AGS) equations [18,19] for the four-particle transition operators in the momentum-space framework.…”