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11 results on '"MICZAIKA, A"'

1. Excitation and fission decay of 232Th by inelastic scattering of 17O at 84 MeV/u

Author

J.P. Garron, R. Liguori-Neto, A. van der Woude, T. Suomijärvi, C. Cabot, B. Fernandez, F. Auger, A. Miczaika, S. K. Mark, A. Gillibert, J. Gastebois, Roy A. Lacey, A.M. van den Berg, N. Frascaria, N. Alamanos, Y. Blumenfeld, P. Roussel-Chomaz, R. Turcotte, J. Xing, J. A. Scarpaci, J. Barrette, and J. C. Roynette

Subjects
Physics, Nuclear reaction, Nuclear and High Energy Physics, Cold fission, Cluster decay, Fission, Isoscalar, Nuclear Theory, Resonance, Inelastic scattering, Nuclear physics, Quadrupole, Atomic physics, Nuclear Experiment
Abstract

Inelastic scattering of 84 MeV/u 17 O projectiles has been used to excite the giant resonances (GR) in 232 Th. The deduced parameters (width, energy, EWSR) of the isoscalar giant quadrupole resonance are in agreement with the known systematics. The observed giant monopole resonance strength, 100% of the EWSR, is consistent with other recent experimental results using heavy-ion projectiles. Strength is also observed at high excitation energy. The fission probability of GR in 232 Th has been measured by detecting the fission fragments in coincidence with the inelastically scattered particles. A structure is observed in the fission coincidence spectrum around 10 MeV, which can be attributed to the fission decay of giant resonances. The measured fission probability is consistent with statistical decay of the GQR.

Published
1994
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2. Excitation and fission decay of 232Th by inelastic scattering of 17O at 84 MeV/u

Author

Cabot, C., primary, Barrette, J., additional, Mark, S.K., additional, Turcotte, R., additional, Xing, J., additional, Alamanos, N., additional, Auger, F., additional, Fernandez, B., additional, Gastebois, J., additional, Gillibert, A., additional, Lacey, R., additional, Liguori-Neto, R., additional, Roussel-Chomaz, P., additional, Miczaika, A., additional, Blumenfeld, Y., additional, Frascaria, N., additional, Garron, J.P., additional, Roynette, J.C., additional, Scarpaci, J.A., additional, Suomijarvi, T., additional, Van der Woude, A., additional, and Van den Berg, A.M., additional

Published
1994
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3. Excitation of giant resonances in 208Pb, 120Sn, 90Zr and 60Ni by 84 MeV/nucleon 17O ions

Author

Liguori Neto, R., primary, Roussel-Chomaz, P., additional, Rochais, L., additional, Alamanos, N., additional, Auger, F., additional, Fernandez, B., additional, Gastebois, J., additional, Gillibert, A., additional, Lacey, R., additional, Miczaika, A., additional, Pierroutsakou, D., additional, Barrette, J., additional, Mark, S.K., additional, Turcotte, R., additional, Blumenfeld, Y., additional, Frascaria, N., additional, Garron, J.P., additional, Roynette, J.C., additional, Scarpaci, J.A., additional, Suomijärvi, T., additional, Van der Woude, A., additional, and Van den Berg, A.M., additional

Published
1993
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4. Proton stripping induced by 13C at 50 MeV/nucleon on 12C, 40Ca and 58Ni

Author

Braeunig, M., primary, Von Oertzen, W., additional, Bohlen, H.G., additional, Miczaika, A., additional, Stiliaris, E., additional, Buenerd, M., additional, Berat, C., additional, Chauvin, J., additional, Lebrun, D., additional, Hostachy, J.Y., additional, Martin, Ph., additional, Mittig, W., additional, Barette, J., additional, Berthier, B., additional, and Fernandez, B., additional

Published
1990
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5. Observation of a narrow enhancement in the pp mass distribution from the reaction γd → ppπ−

Author

E. Roderburg, H. W. Gelhausen, T. Miczaika, D. Menze, E. Schenuit, O. Kaul, W. J. Schwille, Gisela Anton, W. Ferber, B. Bock, T. Jahnen, D. Sundermann, W. Ruhm, W. Meyer, E. P. Schilling, and K.H. Althoff

Subjects
Physics, Nuclear reaction, Nuclear and High Energy Physics, Proton, Spectrometer, Mass distribution, Nuclear Theory, Solid angle, Nuclear physics, Pion, Physics::Accelerator Physics, Invariant mass, Atomic physics, Nuclear Experiment, Beam (structure)
Abstract

Studying the reaction γ d → pp π − , a narrow resonance structure in the pp invariant mass distribution has been observed at 2014 ± 2 MeV/ c 2 with a statistical significance of 4.7 standard deviations. Using a bremsstrahlung photon beam ( k 0 = 520 MeV), the kinematics of the reaction were completely determined by detecting both outgoing protons in two large solid angle time-of-flight spectrometers. By accepting only proton momenta greater than ∼300 MeV/ c , the predominant contribution from quasi-free pion production was suppressed.

Published
1986
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6. The mechanism of the (12C,12N) charge exchange reaction on 12C between 30 and 100 MEV/U

Author

C. Berat, P.O. Pellegrin, B. Berthier, H. H. Wolter, H. G. Bohlen, B. Fernandez, Th. Wilpert, M. Buenerd, H. Lenske, E. Stiliaris, B. Gebauer, J. Barrette, N. Alamanos, J. Gastebois, M. Wllpert, W. von Oertzen, S. Kubono, A. Miczaika, D. Kolbert, W. Mittig, Ph. A. Martin, J-Y. Hostachy, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Nuclear and High Energy Physics, Reaction mechanism, 010308 nuclear & particles physics, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, State dependent, 0103 physical sciences, Atomic physics, Nuclear Experiment, 010306 general physics, Charge exchange, Direct process
Abstract

The Charge exchange reaction 12 C( 12 C, 12 N) 12 B has been studied at 30 and 70 MeV/u in order to investigate the energy dependence of the two reaction mechanisms involved: the direct charge exchange and the proton-neutron exchange. Microscopic calculations have been performed for both processes and an almost quantitative description of the data could be achieved. The p-n exchange is strong at low energies and has a maximum at about 30 MeV/u. The direct process dominates for all states only at energies well above 100 MeV/u, but the energy region for the transition from two-step to direct dominance is strongly state dependent.

Published
1988
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7. Search for dibaryon resonances of masses between 2.16 and 2.32 GeV/c2 in the reaction γd → ppπ−

Author

W. Ferber, T. Jahnen, W. Ruhm, E. Schenuit, O. Kaul, T. Miczaika, W. J. Schwille, D. Menze, K.H. Althoff, B. Bock, and H. W. Gelhausen

Subjects
Nuclear physics, Physics, Nuclear reaction, Nuclear and High Energy Physics, Cross section (physics), Particle physics, Spectrometer, Phase space, Solid angle, Resonance, Invariant mass, Nuclear Experiment, Beam (structure)
Abstract

The reaction γ d → pp π − has been studied in order to investigate whether dibaryon resonances contribute to the cross section in the invariant mass region from 2.16 to 2.32 GeV/ c 2 . Using a bremsstrahlung photon beam we have determined the invariant mass M ppπ by detecting both outgoing protons in large solid angle TOF spectrometers, thus achieving a statistical accuracy of 1 to 2% per 2.5 MeV/ c 2 bin, a mean invariant mass resolution of 4.4 MeV/ c 2 (σ) and a smooth M ppπ acceptance. Despite the resulting high resonance sensitivity no evidence for a dibaryon resonance in the M ppπ distribution was found. Assuming an isotropic phase space decay we estimate the upper limit for the dibaryon resonance cross section to be 1μb for masses around 2.23 GeV/ c 2 and resonance widths between 5 and 40 GeV/ c 2 .

Published
1986
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8. The mechanism of the (12C,12N) charge exchange reaction on 12C between 30 and 100 MEV/U

Author

Bohlen, H.G., primary, Gebauer, B., additional, Kolbert, D., additional, Kubono, S., additional, von Oertzen, W., additional, Pellegrin, P.O., additional, Stiliaris, E., additional, Wllpert, M., additional, Wilpert, T., additional, Lenske, H., additional, Wolter, H.H., additional, Miczaika, A., additional, Alamanos, N., additional, Barrette, J., additional, Berthier, B., additional, Fernandez, B., additional, Gastebois, J., additional, Berat, C., additional, Buenerd, M., additional, Hostachy, J.Y., additional, Martin, Ph., additional, and Mittig, W., additional

Published
1988
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11. Observation of a narrow enhancement in the pp mass distribution from the reaction γd → ppπ−

Author

Bock, B., primary, Ruhm, W., additional, Althoff, K.H., additional, Anton, G., additional, Ferber, W., additional, Gelhausen, H.W., additional, Jahnen, T., additional, Kaul, O., additional, Menze, D., additional, Meyer, W., additional, Miczaika, T., additional, Roderburg, E., additional, Schilling, E., additional, Schenuit, E., additional, Sundermann, D., additional, and Schwille, W.J., additional

Published
1986
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