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Your search keyword '"Groep, D."' showing total 3 results
Start Over Author "Groep, D." Topic nuclear theory
3 results on '"Groep, D."'

1. O-16(e,e ' p) reaction at large missing energy

Author

Iodice, M., Cisbani, E., De Leo, R., Frullani, S., Garibaldi, F., Groep, D. L., Hesselink, W. H. A., Jans, E., Lapikas, L., Onderwater, C. J. G., Perrino, R., Ryckebusch, J., Starink, R., Urciuoli, G. M., and Precision Frontier

Subjects
ELECTRON-SCATTERING, two-body currents, electron-induced knockout reactions, Nuclear Theory, FACILITY, SHORT-RANGE CORRELATIONS, O-16, Nuclear Experiment
Abstract

We investigate the origin of the strength at large missing energies in electron-induced proton knockout reactions. For that purpose the reaction 160(e. e'p) was studied at a central value w) = 215 MeV of the energy transfer, and two values of the momentum transfer: q = 300, 400 MeV/c, corresponding to the "dip region". Differential cross sections were determined in a large range of missing energy (E-m = 0-140 MeV) and proton emission angle (gamma(pq),, = 0- 110 degrees), and compared to predictions of a model that includes nucleon-nucleon short-range correlations and two-body currents. It is observed that, in the kinematic domain covered by this experiment, the largest contribution to the cross section stems from two-body currents, while short-range correlations contribute a significant fraction. (C) 2007 Elsevier B.V. All rights reserved.

Published
2007

2. 16O(e,e'p) reaction at large missing energy

Author

Iodice, M., Cisbani, E., De Leo, R., Frullani, S., Garibaldi, F., Groep, D. L., Hesselink, W. H. A., Jans, E., Lapikas, L., Onderwater, C. J. G., Perrino, R., Ryckebusch, J., Starink, R., and Urciuoli, G. M.

Subjects
Nuclear Theory, FOS: Physical sciences, Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract

We investigate the origin of the strength at large missing energies in electron-induced proton knockout reactions. For that purpose the reaction 16O(e,e'p) was studied at a central value omega=210 MeV of the energy transfer, and two values of the momentum transfer: q=300, 400 MeV/c, corresponding to the "dip region". Differential cross sections were determined in a large range of missing energy (Em=0-140 MeV) and proton emission angle (gamma_pq =0-110 deg), and compared to predictions of a model that includes nucleon-nucleon short-range correlations and two-body currents. It is observed that, in the kinematic domain covered by this experiment, the largest contribution to the cross section stems from two-body currents, while short-range correlations contribute a significant fraction, submitted to Physics Letters B

Published
2007

3. Investigation of the Exclusive 3He(e,e'pp) Reaction

Author

Groep, D. L., van Batenburg, M. F., Bauer, Th. S., Blok, H. P., Boersma, D. J., Cisbani, E., De Leo, R., Frullani, S., Garibaldi, F., Gloeckle, W., Golak, J., Heimberg, P., Hesselink, W. H. A., Iodice, M., Ireland, D. G., Jans, E., Kamada, H., Lapikas, L., Lolos, G. J., Perrino, R., Scott, A., Starink, R., Steenbakkers, M. F. M., Urciuoli, G. M., de Vries, H., Weinstein, L. B., and Witala, H.

Subjects
Nuclear Theory, FOS: Physical sciences, Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract

Cross sections for the 3He(e,e'pp)n reaction were measured at an energy transfer of 220 MeV and three-momentum transfers q of 305, 375, and 445 MeV/c. Results are presented as a function of q and the final-state neutron momentum for slices in specific kinematic variables. At low neutron momenta, comparison of the data to results of continuum Faddeev calculations performed with the Bonn-B nucleon-nucleon potential indicates a dominant role for two-proton knockout induced by a one-body hadronic current., 4 pages, 3 figures

Published
1999

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