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The direct reaction theory widely used to study single-particle spectroscopic strength in nucleon transfer experiments is based on a Hamiltonian with two-nucleon interactions only. We point out that in reactions with a loosely-bound…

Nuclear Theory · Physics 2023-03-22 N. K. Timofeyuk , L. Moschini , M. Gómez-Ramos

A microscopic calculation of reaction cross sections for nucleon-nucleus scattering has been performed by explicitly coupling the elastic channel to all particle-hole excitations in the target and one-nucleon pickup channels. The…

Nuclear Theory · Physics 2011-12-26 G. P. A. Nobre , F. S. Dietrich , J. E. Escher , I. J. Thompson , M. Dupuis , J. Terasaki , J. Engel

Nucleon total reaction and neutron total cross sections to 300 MeV for 12C and 208Pb, and for 65 MeV spanning the mass range, are predicted using coordinate space optical potentials formed by full folding of effective nucleon-nucleon…

Nuclear Theory · Physics 2009-11-07 P. K. Deb , K. Amos , S. Karataglidis , M. B. Chadwick , D. G. Madland

Small-angle, two-particle correlation functions have been measured for 36Ar+ 112,124Sn collisions at E/A = 61 MeV. Total momentum gated neutron-proton (np) and proton-proton (pp) correlations are stronger for the 124Sn-target. Some of the…

$Background:$ The determination of the nuclear neutron properties suffers from uncontrolled uncertainties, which attracted considerable attention recently, such as in the context of the PREX experiment. $Purpose:$ Our aim is to analyze the…

Nuclear Theory · Physics 2022-11-30 Jian Liu , Yunsheng Wang , Yonghao Gao , Pawel Danielewicz , Chang Xu , Zhongzhou Ren

Using symmetric 112Sn+112Sn, 124Sn+124Sn collisions as references, we probe isospin diffusion in peripheral asymmetric 112Sn+124Sn, 124Sn+112Sn systems at incident energy of E/A=50 MeV. Isoscaling analyses imply that the quasi-projectile…

We construct the velocity map images of the proton transfer reaction between helium and molecular hydrogen ions H2+. We perform simulations of imaging experiments at one representative total collision energy taking into account the inherent…

Chemical Physics · Physics 2018-01-17 Mario Hernández Vera , R. Wester , F. A. Gianturco

Approximations made to estimate two-nucleon transfer probabilities in ground-state to ground-state transitions and physical interpretation of these probabilities are discussed. Probabilities are often calculated by approximating both ground…

Nuclear Theory · Physics 2015-06-04 M. Grasso , D. Lacroix , A. Vitturi

We reanalyse the production of $p\bar{p}$ pairs in proton-nucleus and nucleus-nucleus collisions employing novel elementary cross sections for baryon-baryon and pion-baryon production channels based on a boson-exchange model. In contrast to…

Nuclear Theory · Physics 2009-10-30 A. Sibirtsev , W. Cassing , G. I. Lykasov , M. V. Rzjanin

To extract structure information from proton elastic scattering off S isotopes at 320 MeV and Ni isotopes at $E_p=180$ MeV, this study proposes isotopic analyses combining nuclear structure and reaction calculations. The isotonic analysis…

Nuclear Theory · Physics 2022-08-02 Yoshiko Kanada-En'yo

Isotopic effects observed in fragmentation reactions induced by protons, deuterons, and alpha particles of incident energies between 660 MeV and 15.3 GeV on 112-Sn and 124-Sn targets are discussed. The exponential scaling of the yield…

Nuclear Theory · Physics 2009-11-07 A. S. Botvina , O. V. Lozhkin , W. Trautmann

Recent studies of multi-nucleon transfer in heavy ion collisions have employed both macroscopic and microscopic models. Although macroscopic approaches offer useful insights, microscopic analyses of high-precision experimental data provide…

Nuclear Theory · Physics 2026-05-19 Chandra Kumar , S. Nath

Cross sections and photon asymmetries of the exclusive 16O(\gamma,pn)14N and 16O(\gamma,pp)14C knockout reactions are calculated for transitions to the low-lying discrete final states of the residual nucleus in the photon-energy range…

Nuclear Theory · Physics 2009-10-31 C. Giusti , F. D. Pacati

Understanding pion production in nucleon-nucleon collisions near threshold has been a challenge for the last decades. In particular, the reaction pp -> pppi0 is highly sensitive to short-range mechanisms, because isospin conservation…

Nuclear Theory · Physics 2009-09-29 Veronica Malafaia

We construct a formula for proton-nucleus total reaction cross section as a function of the mass and neutron excess of the target nucleus and the proton incident energy. We deduce the dependence of the cross section on the mass number and…

Nuclear Theory · Physics 2008-11-26 Kei Iida , Akihisa Kohama , Kazuhiro Oyamatsu

Based on the statistical theory of light nucleus reactions (STLN), the description of the complicated emission processes of proton and light composite charged particles are further improved through considering the effects of Coulomb…

Nuclear Theory · Physics 2020-04-01 Jiaqi Hu , Xiaojun Sun , Jingshang Zhang , Sheng Wang , Sheng Wang , Yinlu Han

We measure cross sections of proton-induced reactions on tin up to energies of 18 MeV using the stacked-foil activation technique, and report first experimental values for 114Sn(p,{\alpha})111In, {^{120}}Sn(p,{\alpha})117gIn, and…

Nuclear Experiment · Physics 2023-07-25 G. H. Hovhannisyan , T. M. Bakhshiyan , G. V. Martirosyan , R. K. Dallakyan , A. R. Balabekyan

Purpose : The aim of this paper is to calculate the $^{15}$N($n, \gamma$)$^{16}$N radiative capture cross section and its subsequent reaction rate by an indirect method and in that process investigate the effects of spectroscopic factors of…

Nuclear Theory · Physics 2015-10-13 Neelam , Shubhchintak , R. Chatterjee

The neutron total cross sections $\sigma_{tot}$ of $^{16,18}$O, $^{58,64}$Ni, $^{103}$Rh, and $^{112,124}$Sn have been measured at the Los Alamos Neutron Science Center (LANSCE) from low to intermediate energies (3 $\leq E_{lab} \leq$ 450…

A new method to calculate cross sections for $(p,pn)$ and $(p,2p)$ reactions measured under inverse kinematics conditions is proposed. The method uses the prior form of the scattering transition amplitude, and replaces the exact three-body…

Nuclear Theory · Physics 2015-10-28 Antonio M. Moro