MICROSCOPIC ANALYSIS OF <sup>11</sup>Li ELASTIC SCATTERING ON PROTONS

The reaction mechanism of pre-equilibrium proton-induced α-particle emission from 93 Nb at an incident energy of 100 MeV was investigated with polarized projectiles. A formalism based on the statistical multistep direct emission model of Feshbach, Kerman and Koonin was found to give a reasonably good reproduction of cross section and analyzing power angular distributions at various emission energies. Existing experimental distributions for the same reaction at an incident energy of 65 MeV were also analyzed with the same model. The incident-energy variation from 65 MeV up to 160 MeV was found to be consistent with the predictions of the basic model. However, whereas knockout of an α cluster is the dominant reaction mechanism in the final stage at the lowest-and highest incident energies, at 100 MeV a pickup process competes with comparable intensity in yield.

show abstract

“…The theoretical approach of the microscopic optical potential is presented in Refs. [21][22][23][24] and successfully applied e.g. in Refs.…”

Section: Optical Potentials In the Dwba Calculationmentioning

confidence: 99%

“…in Refs. [25][26][27][28] for the analysis of elastic scattering data of light exotic nuclei. We already described details about the optical potential calculations in Refs.…”

Section: Optical Potentials In the Dwba Calculationmentioning

confidence: 99%

Pre-equilibrium mechanisms in theNb93(p⃗,α)inclusive reaction at incident energies from 65 to 160 MeV

Dimitrova

Cowley²,

Zemlyanaya³

et al. 2014

Phys. Rev. C

Self Cite

View full text Add to dashboard Cite

show abstract

“…More details how to calculate the characteristics of breakup processes of the 11 Li and 11 Be nuclei, namely diffraction and stripping reaction cross sections and the momentum distributions of the fragments, are given in Refs. [6,7]. We perform calculations of the breakup cross sections of 11 Be on the target nucleus 9 Be and heavy nuclei, such as 93 Nb, 181 Ta, and 238 U, and compare our results with the available experimental data [28].…”

Section: Results Of Calculations Of Elastic Scattering Cross Sectionsmentioning

confidence: 99%

“…Special attention has been paid to the neutronrich isotopes of helium ( 6,8 He), lithium ( 11 Li), berilium ( 11,14 Be), and others, in which several neutrons are situated in the far extended nuclear periphery and form a halo. A widely used way to study the structure of exotic nuclei is to analyze their elastic scattering on protons or nuclear targets at different energies.…”

Section: Introductionmentioning

confidence: 99%

“…In this work (see also [6,7]), as well as in our previous works considering processes with exotic He isotopes [8][9][10], we use microscopically calculated OPs within the hybrid model [11,12]. In the latter the ReOP is calculated by a folding of a nuclear density and the effective nucleonnucleon (NN) potentials [13] and includes both direct and exchange parts.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Study of¹¹Li and^10,11Be nuclei through elastic scattering and breakup reactions

Gaidarov

Lukyanov

Kadrev

et al. 2016

EPJ Web of Conferences

Self Cite

View full text Add to dashboard Cite

Abstract. The hybrid model of the microscopic optical potential (OP) is applied to calculate the 11 Li+p,10,11 Be+p,and 10,11 Be+ 12 C elastic scattering cross sections at energies E < 100 MeV/nucleon. The OP's contain the folding-model real part (ReOP) with the direct and exchange terms included, while its imaginary part (ImOP) is derived within the high-energy approximation (HEA) theory. For the 11 Li+p elastic scattering, the microscopic large-scale shell model (LSSM) density of 11 Li is used, while the density distributions of 10,11 Be nuclei obtained within the quantum Monte Carlo (QMC) model and the generator coordinate method (GCM) are utilized to calculate the microscopic OPs and cross sections of elastic scattering of these nuclei on protons and 12 C. The depths of the real and imaginary parts of OP are fitted to the elastic scattering data, being simultaneously adjusted to reproduce the true energy dependence of the corresponding volume integrals. Also, the cluster models, in which 11 Li consists of 2n-halo and the 9 Li core having its own LSSM form of density and 11 Be consists of a n-halo and the 10 Be core, are adopted. Within the latter, we give predictions for the longitudinal momentum distributions of 9 Li fragments produced in the breakup of 11 Li at 62 MeV/nucleon on a proton target. It is shown that our results for the diffraction and stripping reaction cross sections in 11 Be scattering on 9 Be, 93 Nb, 181 Ta, and 238 U targets at 63 MeV/nucleon are in a good agreement with the available experimental data.

show abstract

Elastic scattering and breakup reactions with light proton- and neutron-rich exotic nuclei

et al. 2018

Self Cite

View full text Add to dashboard Cite

A microscopic analysis of the optical potentials (OPs) and cross sections of elastic scattering of 8B on 12C, 58Ni, and 208Pb targets at energies 20 < E < 170 MeV and 12,14Be on 12C at 56 MeV/nucleon is carried out. The real part of the OP is calculated by a folding procedure and the imaginary part is obtained on the base of the high-energy approximation (HEA). The density distributions of 8B evaluated within the variational Monte Carlo (VMC) model and the three-cluster model (3CM) are used to construct the potentials. The 14Be densities obtained in the framework of the the generator coordinate method (GCM) are used to calculate the optical potentials, while for the same purpose both the VMC model and GCM densities of 12Be are used. In the hybrid model developed and explored in our previous works, the only free parameters are the depths of the real and imaginary parts of OP obtained by fitting the experimental data. The use of HEA to estimate the imaginary OP at energies just above the Coulomb barrier is discussed. In addition, cluster model, in which 8B consists of a p-halo and the 7Be core, is applied to calculate the breakup cross sections of 8B nucleus on 9Be, 12C, and 197Au targets, as well as momentum distributions of 7Be fragments. A good agreement of the theoretical results with the available experimental data is obtained. It is concluded that the reaction studies performed in this work may provide supplemental information on the internal spatial structure of the proton- and neutron-halo nuclei.

show abstract

MICROSCOPIC ANALYSIS OF ¹¹Li ELASTIC SCATTERING ON PROTONS

Cited by 10 publications

References 0 publications

Pre-equilibrium mechanisms in theNb93(p⃗,α)inclusive reaction at incident energies from 65 to 160 MeV

Pre-equilibrium mechanisms in theNb93(p⃗,α)inclusive reaction at incident energies from 65 to 160 MeV

Study of¹¹Li and^10,11Be nuclei through elastic scattering and breakup reactions

Elastic scattering and breakup reactions with light proton- and neutron-rich exotic nuclei

Contact Info

Product

Resources

About

MICROSCOPIC ANALYSIS OF 11Li ELASTIC SCATTERING ON PROTONS

Cited by 10 publications

References 0 publications

Pre-equilibrium mechanisms in theNb93(p⃗,α)inclusive reaction at incident energies from 65 to 160 MeV

Pre-equilibrium mechanisms in theNb93(p⃗,α)inclusive reaction at incident energies from 65 to 160 MeV

Study of11Li and10,11Be nuclei through elastic scattering and breakup reactions

Elastic scattering and breakup reactions with light proton- and neutron-rich exotic nuclei

Contact Info

Product

Resources

About

MICROSCOPIC ANALYSIS OF ¹¹Li ELASTIC SCATTERING ON PROTONS

Study of¹¹Li and^10,11Be nuclei through elastic scattering and breakup reactions