Imaginary deuteron optical potential due to elastic and inelastic breakup

Ingemarsson, A.; Shyam, Radhey

doi:10.1103/physrevc.60.054615

Cited by 4 publications

(4 citation statements)

References 44 publications

(74 reference statements)

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“…[31], is that due to their very small binding energies the halo nuclei break up far away from the distance of closest approach, which reduces greatly the effect of Coulomb repulsion on the charged outgoing fragment. This argument has received support from a recent calculation of the Coulomb dissociation potential of the deuteron which is shown [51] to have a considerably large value even outside the charge density of the target nucleus. A separate reason for not observing this effect has been put forward by the authors of Ref.…”

Section: Calculations For Reactions Induced By 11 Bementioning

confidence: 97%

Projectile structure effects in the Coulomb breakup of one-neutron halo nuclei

2000

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We investigate the Coulomb breakup of neutron rich nuclei 11 Be and 19,17,15 C within a theory developed in the framework of Distorted Wave Born Approximation. Finite range effects are included by a local momentum approximation, which allows incorporation of realistic wave functions for these nuclei in our calculations. Energy and angular as well as parallel momentum distributions of the fragments emitted in the breakup of these nuclei on heavy targets have been calculated using several structure models for their ground state. Comparison with the available experimental data shows that the results are selective about the ground state wave function of the projectile. Our investigations confirm that the nuclei 11 Be, 19 C and 15 C have a one-neutron halo structure in their ground states. However, for 17 C such a structure appears to be less likely. Calculations performed within our method have also been compared with those from an adiabatic model and the results are discussed. PACS numbers: 21.10. Hw, 24.10.Eq, 25.60.Gc Key words: Coulomb breakup, one-neutron halo nucleus, effects of projectile structure.

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Section: Calculations For Reactions Induced By 11 Bementioning

confidence: 97%

Projectile structure effects in the Coulomb breakup of one-neutron halo nuclei

2000

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“…An example for such a "renormalization" of ImOP for elastic d + A scattering due to the stripping channel was given in Ref. [45]. For more complex systems this is difficult to be done because only in the (d, p) reaction one can use the approximation of the "delta"-potential in the deuteron.…”

Section: Resultsmentioning

confidence: 99%

He6+C12elastic scattering using a microscopic optical potential

et al. 2010

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The6 He+ 12 C elastic scattering data at beam energies of 3, 38.3 and 41.6 MeV/nucleon are studied utilizing the microscopic optical potentials obtained by a double-folding procedure and also by using those inherent in the high-energy approximation. The calculated optical potentials are based on the neutron and proton density distributions of colliding nuclei established in an appropriate model for 6 He and obtained from the electron scattering form factors for 12 C. The depths of the real and imaginary parts of the microscopic optical potentials are considered as fitting parameters. At low energy the volume optical potentials reproduce sufficiently well the experimental data. At higher energies, generally, additional surface terms having form of a derivative of the imaginary part of the microscopic optical potential are needed. The problem of ambiguity of adjusted optical potentials is resolved requiring the respective volume integrals to obey the determined dependence on the collision energy. Estimations of the Pauli blocking effects on the optical potentials and cross sections are also given and discussed. Conclusions on the role of the aforesaid effects and on the mechanism of the considered processes are made.

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“…A similar finding has been made for the case of 6 Li breakup, where the continuum s-wave states couple mainly in an indirect way via the resonant 2 + and 3 + d-wave states to the ground state. This implies that the full coupled channel multi-step process can be hardly well approximated by one-step process DWBA calculations [22].…”

Section: Elastic Scattering Of 6 LI and Channel Couplingmentioning

confidence: 99%

“…This simplification could be the origin for an imperfect reproduction of the data, but provides an estimate of the strength of the imaginary part, when the most important breakup channels are explicitely treated. Recently for the case of deuteron scattering the contribution of the elastic and nonelastic breakup channels to the imaginary potential has been theoretically calculated on the basis of the post form DWBA [22]. There are also detailed experimentally based results for the reaction of 156 MeV 6 Li + 40 Ca available, which reveal the dominant contribution of the nonelastic channel to the total breakup cross section [26].…”

Section: Elastic Scattering Of 6 LI and Channel Couplingmentioning

confidence: 99%

Reaction mechanism of 6Li scattering at 600 MeV

Schwarz

Samanta

Fujiwara

et al. 2000

EPJ A

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Elastic scattering and inclusive breakup of 6 Li particles on 12 C, 58 Ni, 90 Zr, and 208 Pb targets are measured at 100A MeV. The elastic scattering data are compared with single channel and Coupled Discretized Continuum Channels calculations. The coupling-effect between the elastic and the breakup channels is important even at an incident energy of 100A MeV and cannot be neglected. The inclusive breakup data are investigated for orbital dispersion effects which are found to be less significant at 100A MeV. The longitudinal momentum distributions are broader than predicted by theoretical expectations. PACS. 24.50.+g Direct reactions -25.60.Gc Breakup and momentum distributions -27.20.+n 6 ≤ A ≤ 19

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Imaginary deuteron optical potential due to elastic and inelastic breakup

Cited by 4 publications

References 44 publications

Projectile structure effects in the Coulomb breakup of one-neutron halo nuclei

Projectile structure effects in the Coulomb breakup of one-neutron halo nuclei

He6+C12elastic scattering using a microscopic optical potential

Reaction mechanism of 6Li scattering at 600 MeV

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