Inclusive projectile fragmentation in the spectator model

Hussein, M. S.; McVoy, K.W.

doi:10.1016/0375-9474(85)90364-1

Cited by 147 publications

(159 citation statements)

References 6 publications

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“…There is a consistent preference for potentials with very weak imaginary parts, with values of W around 5-7 MeV. We systematically find r V < r W and large diffuseness parameters a V ≃ 0.9 fm in agreement with theoretical expectations for loosely bound nuclei [19,20]. A grid search procedure on the real depth of the potential allowed us to identify discrete ambiguities.…”

Section: A Woods-saxon Form Factorssupporting

confidence: 81%

Refractive versus resonant diffraction scattering of loosely bound6Li nuclei

Cârstoiu

Trache

2012

Phys. Rev. C

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We present a complete analysis of elastic scattering 6 Li+ 16 O at 4 and 5 MeV/nucleon. Using either traditional Woods-Saxon or a range of semi-microscopic folding form-factors we find that the data require deep, highly transparent potentials. Physically relevant solutions are selected according to dispersion relation. The intermediate angle structures and the oscillatory increase of the cross section at large angles is interpreted either as a pre-rainbow oscillation resulting from the interference of the barrier and internal barrier far-side scattering subamplitudes, or, equally well, as a resonant diffraction arising from two Regge poles located in peripheral waves. Both semi-classical and Regge pole approaches allow a dynamical separation of the resonant component of the S-matrix.

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Section: A Woods-saxon Form Factorssupporting

confidence: 81%

Refractive versus resonant diffraction scattering of loosely bound6Li nuclei

Cârstoiu

Trache

2012

Phys. Rev. C

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“…We first assume that the residue-target S matrix is diagonal with respect to different final states f of the residue, and that this diagonal interaction is the same as that for the residue ground state ͑denoted= S c ͒ for all final states f. This has been termed the spectator-core approximation when used in single-nucleon knockout [23]. It assumes that the amplitudes for dynamical excitation of the core during the collision are small.…”

Section: B Eikonal Model Of Two-nucleon Strippingmentioning

confidence: 99%

Correlated two-nucleon stripping reactions

et al. 2004

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The cross sections for the stripping of two correlated nucleons from light and medium-mass nuclei are considered. Such reactions are of interest both as a means for populating and identifying low-lying excited states of very exotic nuclear species and as a potential direct spectroscopic probe of two-nucleon correlations in such systems. A calculation scheme that combines the full shell model two-nucleon spectroscopic amplitudes with eikonal reaction theory is presented. The theoretical predictions of the method, and of more approximate schemes, are compared with new data on two-proton removal from 28 Mg. The combined full shell model structure amplitudes and reaction dynamics predictions are in good agreement with the available measurements. First indications of the sensitivity of the reaction mechanism to the spatial and angular momentum structure of the stripped two-nucleon wave functions are also discussed and clarified.

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“…Generalizing Refs. [3,4] to the deformed core case, the integrated cross section σ strip for single-neutron stripping is now the following:…”

Section: A Eikonal Model Cross Sectionsmentioning

confidence: 99%

“…To date, essentially all calculations have made the spectatorcore approximation [3,4] in which it is assumed that the internal degrees of freedom of these reaction residues are inert and are not dynamically excited or deexcited during the reaction. This allows a direct structural connection to be made between the measured partial cross sections and the wave function overlaps between the projectile initial state and the measured residue final states.…”

Section: Introductionmentioning

confidence: 99%

Dynamical core deformation effects on single-nucleon knockout reactions at fragmentation beam energies

2005

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The effects of core deformation and of its dynamical reorientation and rotational excitation on the inclusive single-neutron knockout reaction cross sections on light spherical target nuclei are examined. The projectile nuclei are modeled within the framework of a weak-coupling, quadrupole-deformed core-plus-neutron two-body model. We formulate the inclusion of this non-spectator-core degree of freedom within the nonperturbative eikonal model and calculate the elastic and inelastic breakup (or stripping) neutron-removal cross sections. We apply the methods to model the single-neutron removal reactions induced by 11 Be and 17 C secondary fragmentation beams incident on a 9 Be target. Our calculations indicate that dynamical deformation effects on the elastic breakup component of the knockout cross section can be significant. This is the largest effect. The more geometrical stripping cross section is found to be hardly changed by the inclusion of the deformed core degree of freedom.

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Inclusive projectile fragmentation in the spectator model

Cited by 147 publications

References 6 publications

Refractive versus resonant diffraction scattering of loosely bound6Li nuclei

Refractive versus resonant diffraction scattering of loosely bound6Li nuclei

Correlated two-nucleon stripping reactions

Dynamical core deformation effects on single-nucleon knockout reactions at fragmentation beam energies

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