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Your search keyword '"Ordonez, M. F."' showing total 5 results
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5 results on '"Ordonez, M. F."'

1. Experimental investigation of the residues produced in the 136Xe+Pb and 124Xe+Pb fragmentation reactions at 1 A GeV

Author

Henzlova, D., Schmidt, K. -H., Ricciardi, M. V., Kelic, A., Henzl, V., Napolitani, P., Audouin, L., Benlliure, J., Boudard, A., Casarejos, E., Ducret, J. E., Enqvist, T., Heinz, A., Junghans, A., Jurado, B., Krasa, A., Kurtukian, T., Leray, S., Ordonez, M. F., Pereira, J., Pleskac, R., Rejmund, F., Schmitt, C., Stephan, C., Tassan-Got, L., Villagrasa, C., Volant, C., Wagner, A., and Yordanov, O.

Subjects
Nuclear Experiment
Abstract

This paper presents the nuclide cross sections and the longitudinal velocity distributions of residues produced in the reactions of 136Xe and 124Xe at 1 A GeV in a lead target, measured at the high-resolution magnetic spectrometer, the Fragment Separator (FRS) of GSI. The data cover a broad range of isotopes of the elements between Z = 3 and Z = 56 for 136Xe and between Z = 5 and Z = 55 for 124Xe, reaching down to cross sections of a few microbarns. The velocity distributions exhibit a Gaussian shape for masses above A = 20, while more complex behaviour is observed for lighter masses. The isotopic distributions for both reactions preserve a memory on the projectile N/Z ratio over the whole residue mass range., Comment: 31 pages, 9 figures, 1 table, background information on http://www.gsi.de/charms

Published
2008
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2. Experimental investigation of the residues produced in the 136Xe+Pb and 124Xe+Pb fragmentation reactions at 1A GeV

Author

Henzlova, D., Schmidt, K. H., Ricciardi, M. V., Kelic, A., Henzl, V., Napolitani, P., Audouin, L., Benlliure, J., Boudard, A., Casarejos, E., Ducret, J. E., Enqvist, T., Heinz, A., Junghans, A. R., Jurado, B., Krasa, A., Kurtukian, T., Leray, S., Ordonez, M. F., Pereira, J., Pleskac, R., Rejmund, F., Schmitt, C., Stephan, C., Tassan-Got, L., Villagrasa, C., Volant, C., Wagner, A., and Yordanov, O.

Subjects
cross section residue high-resolution magnetic spectrometer fragment separator FRS GSI, Nuclear Experiment
Abstract

The nuclide cross sections and longitudinal velocity distributions of residues produced in the reactions of 136Xe and 124Xe at 1A GeV in a lead target were measured at the high-resolution magnetic spectrometer, the fragment separator (FRS) of GSI. The data cover a broad range of isotopes of the elements between Z=3 and Z=56 for 136Xe and between Z=5 and Z=55 for 124Xe, reaching down to cross sections of a few microbarns. The velocity distributions exhibit a Gaussian shape for masses above A=20, while more complex behavior is observed for lighter masses. The isotopic distributions for both reactions preserve a memory on the projectile N/Z ratio over the whole residue mass range.

Published
2008

3. New Measurements of Fragmentation Cross Sections from ^(56)Fe and ^(60)Ni Beams at Energies Relevant to Galactic Cosmic-Ray Propagation

Author

George, J. S., Mewaldt, R. A., Yanasak, N. E., Wiedenbeck, M. E., Connell, J. J., Audouin, L., Bacri, C.-O., Berthier, B., Ferrant, L., Rejmund, F., Stéphan, C., Tassan-Got, L., Karamanis, D., Czajkowski, S., Boudard, A., Ducret, J.-E., Fernandez, B., Leray, S., Villagrasa, C., Volant, C., Faestermann, T., Enqvist, T., Hammache, F., Helariutta, K., Jurado, B., Schmidt, K.-H., Sümmerer, K., Ricciardi, M.-V., Vivès, F., Heinz, A., Benlliure, J., Casarejos, E., Ordonez, M. F., Pereira-Conca, J., Junghans, A. R., Simon, M., Lorenz, E., and Pohl, M.

Subjects
Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, Physics::Accelerator Physics, Nuclear Experiment
Abstract

Models of cosmic-ray propagation in the Galaxy rely heavily on knowledge of the nuclear fragmentation cross sections which govern spallation of heavy nuclei in the interstellar medium. Interpretation of high-precision cosmic-ray composition data such as those from the ACE and Ulysses missions requires improved cross-section data. New measurements of partial fragmentation cross sections have been made with high statistical accuracy at the GSI heavy ion synchrotron (SIS) using ^(56)Fe beams at five energies between 300 and 1500 MeV/nucleon, and 60 Ni beams at 500 and 1000 MeV/nucleon, on a liquid hydrogen target. We report on progress in analyzing these data.

Published
2001

4. New Measurements of Fragmentation Cross Sections from ^(56)Fe and ^(60)Ni Beams at Energies Relevant to Galactic Cosmic-Ray Propagation

Author

Simon, M., Lorenz, E., Pohl, M., George, J. S., Mewaldt, R. A., Yanasak, N. E., Wiedenbeck, M. E., Connell, J. J., Audouin, L., Bacri, C.-O., Berthier, B., Ferrant, L., Rejmund, F., Stéphan, C., Tassan-Got, L., Karamanis, D., Czajkowski, S., Boudard, A., Ducret, J.-E., Fernandez, B., Leray, S., Villagrasa, C., Volant, C., Faestermann, T., Enqvist, T., Hammache, F., Helariutta, K., Jurado, B., Schmidt, K.-H., Sümmerer, K., Ricciardi, M.-V., Vivès, F., Heinz, A., Benlliure, J., Casarejos, E., Ordonez, M. F., Pereira-Conca, J., Junghans, A. R., Simon, M., Lorenz, E., Pohl, M., George, J. S., Mewaldt, R. A., Yanasak, N. E., Wiedenbeck, M. E., Connell, J. J., Audouin, L., Bacri, C.-O., Berthier, B., Ferrant, L., Rejmund, F., Stéphan, C., Tassan-Got, L., Karamanis, D., Czajkowski, S., Boudard, A., Ducret, J.-E., Fernandez, B., Leray, S., Villagrasa, C., Volant, C., Faestermann, T., Enqvist, T., Hammache, F., Helariutta, K., Jurado, B., Schmidt, K.-H., Sümmerer, K., Ricciardi, M.-V., Vivès, F., Heinz, A., Benlliure, J., Casarejos, E., Ordonez, M. F., Pereira-Conca, J., and Junghans, A. R.

Abstract

Models of cosmic-ray propagation in the Galaxy rely heavily on knowledge of the nuclear fragmentation cross sections which govern spallation of heavy nuclei in the interstellar medium. Interpretation of high-precision cosmic-ray composition data such as those from the ACE and Ulysses missions requires improved cross-section data. New measurements of partial fragmentation cross sections have been made with high statistical accuracy at the GSI heavy ion synchrotron (SIS) using ^(56)Fe beams at five energies between 300 and 1500 MeV/nucleon, and 60 Ni beams at 500 and 1000 MeV/nucleon, on a liquid hydrogen target. We report on progress in analyzing these data.

Published
2001

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