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Title: The (t,{sup 3}He) reaction at 43 MeV/nucleon on {sup 48}Ca and {sup 58}Ni: Results and microscopic interpretation

Abstract

We have used the 43 MeV/nucleon primary tritium beam of the AGOR facility with an intensity of 4x10{sup 7} pps and the BBS experimental setup to study the (t,{sup 3}He) reaction between 0 deg. and 5 deg. lab angles on {sup 12}C, {sup 48}Ca, and {sup 58}Ni targets. The standard ray-tracing procedure has allowed us to obtain excitation-energy spectra up to 30 MeV in six angular bins for each residual nucleus, with an average energy resolution of 350 keV. The reaction mechanism has been described in distorted-waves Born approximation (DWBA) using the DWBA98 code. In this approximation, the form factor is treated as a folding of an effective projectile-nucleon interaction with a transition density. The effective projectile-nucleon interaction has been adjusted to reproduce the 0 deg. cross section of the 1{sup +} ground state of {sup 12}B populated in the {sup 12}C(t,{sup 3}He) reaction. We have employed random-phase approximation (RPA) wave functions of excited states to construct the form factor instead of the normal modes wave functions used earlier. This new DWBA+RPA analysis is used to compare calculated and experimental cross sections directly and to discuss the giant resonance excitations in {sup 48}K and {sup 58}Co nuclei.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;  [1] more »;  [2];  [3];  [4];  [5] « less
  1. Institut de Physique Nucleaire, IN2P3-CNRS, F-91406 Orsay (France)
  2. (Italy)
  3. (Netherlands)
  4. (Germany)
  5. (Japan) and Advanced Photon Research Center, Japan Atomic Energy Institute, Kizu, Kyoto 619-0215 (Japan) (and others)
Publication Date:
OSTI Identifier:
20771213
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 73; Journal Issue: 1; Other Information: DOI: 10.1103/PhysRevC.73.014616; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; BORON 12; CALCIUM 48 TARGET; CARBON 12 TARGET; COBALT 58; COMPARATIVE EVALUATIONS; CROSS SECTIONS; DWBA; ENERGY RESOLUTION; ENERGY SPECTRA; EXCITATION; EXCITED STATES; FORM FACTORS; GIANT RESONANCE; GROUND STATES; HELIUM 3; KEV RANGE; MEV RANGE; NICKEL 58 TARGET; NUCLEAR REACTION KINETICS; POTASSIUM 48; RANDOM PHASE APPROXIMATION; TRITON REACTIONS; WAVE FUNCTIONS

Citation Formats

Guillot, J., Gales, S., Beaumel, D., Fortier, S., Rich, E., Nguyen Van Giai, Colo, G., Berg, A.M. van den, Brandenburg, S., Davids, B., Harakeh, M.N., Hunyadi, M., Huu, M. de, Werf, S.Y. van der, Woertche, H.J., Baeumer, C., Frekers, D., Grewe, E.-W., Haefner, P., Junk, B.C., Dipartimento di Fisica, Universita degli Studi and INFN sez. di Milano, via Celoria 16, I-20133 Milan, Kernfysisch Versneller Instituut, NL-9747 AA Groningen, Institut fuer Kernphysik, Universitaet Muenster, D-48194 Muenster, and Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047. The (t,{sup 3}He) reaction at 43 MeV/nucleon on {sup 48}Ca and {sup 58}Ni: Results and microscopic interpretation. United States: N. p., 2006. Web. doi:10.1103/PhysRevC.73.014616.
Guillot, J., Gales, S., Beaumel, D., Fortier, S., Rich, E., Nguyen Van Giai, Colo, G., Berg, A.M. van den, Brandenburg, S., Davids, B., Harakeh, M.N., Hunyadi, M., Huu, M. de, Werf, S.Y. van der, Woertche, H.J., Baeumer, C., Frekers, D., Grewe, E.-W., Haefner, P., Junk, B.C., Dipartimento di Fisica, Universita degli Studi and INFN sez. di Milano, via Celoria 16, I-20133 Milan, Kernfysisch Versneller Instituut, NL-9747 AA Groningen, Institut fuer Kernphysik, Universitaet Muenster, D-48194 Muenster, & Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047. The (t,{sup 3}He) reaction at 43 MeV/nucleon on {sup 48}Ca and {sup 58}Ni: Results and microscopic interpretation. United States. doi:10.1103/PhysRevC.73.014616.
Guillot, J., Gales, S., Beaumel, D., Fortier, S., Rich, E., Nguyen Van Giai, Colo, G., Berg, A.M. van den, Brandenburg, S., Davids, B., Harakeh, M.N., Hunyadi, M., Huu, M. de, Werf, S.Y. van der, Woertche, H.J., Baeumer, C., Frekers, D., Grewe, E.-W., Haefner, P., Junk, B.C., Dipartimento di Fisica, Universita degli Studi and INFN sez. di Milano, via Celoria 16, I-20133 Milan, Kernfysisch Versneller Instituut, NL-9747 AA Groningen, Institut fuer Kernphysik, Universitaet Muenster, D-48194 Muenster, and Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047. Sun . "The (t,{sup 3}He) reaction at 43 MeV/nucleon on {sup 48}Ca and {sup 58}Ni: Results and microscopic interpretation". United States. doi:10.1103/PhysRevC.73.014616.
@article{osti_20771213,
title = {The (t,{sup 3}He) reaction at 43 MeV/nucleon on {sup 48}Ca and {sup 58}Ni: Results and microscopic interpretation},
author = {Guillot, J. and Gales, S. and Beaumel, D. and Fortier, S. and Rich, E. and Nguyen Van Giai and Colo, G. and Berg, A.M. van den and Brandenburg, S. and Davids, B. and Harakeh, M.N. and Hunyadi, M. and Huu, M. de and Werf, S.Y. van der and Woertche, H.J. and Baeumer, C. and Frekers, D. and Grewe, E.-W. and Haefner, P. and Junk, B.C. and Dipartimento di Fisica, Universita degli Studi and INFN sez. di Milano, via Celoria 16, I-20133 Milan and Kernfysisch Versneller Instituut, NL-9747 AA Groningen and Institut fuer Kernphysik, Universitaet Muenster, D-48194 Muenster and Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047},
abstractNote = {We have used the 43 MeV/nucleon primary tritium beam of the AGOR facility with an intensity of 4x10{sup 7} pps and the BBS experimental setup to study the (t,{sup 3}He) reaction between 0 deg. and 5 deg. lab angles on {sup 12}C, {sup 48}Ca, and {sup 58}Ni targets. The standard ray-tracing procedure has allowed us to obtain excitation-energy spectra up to 30 MeV in six angular bins for each residual nucleus, with an average energy resolution of 350 keV. The reaction mechanism has been described in distorted-waves Born approximation (DWBA) using the DWBA98 code. In this approximation, the form factor is treated as a folding of an effective projectile-nucleon interaction with a transition density. The effective projectile-nucleon interaction has been adjusted to reproduce the 0 deg. cross section of the 1{sup +} ground state of {sup 12}B populated in the {sup 12}C(t,{sup 3}He) reaction. We have employed random-phase approximation (RPA) wave functions of excited states to construct the form factor instead of the normal modes wave functions used earlier. This new DWBA+RPA analysis is used to compare calculated and experimental cross sections directly and to discuss the giant resonance excitations in {sup 48}K and {sup 58}Co nuclei.},
doi = {10.1103/PhysRevC.73.014616},
journal = {Physical Review. C, Nuclear Physics},
number = 1,
volume = 73,
place = {United States},
year = {Sun Jan 15 00:00:00 EST 2006},
month = {Sun Jan 15 00:00:00 EST 2006}
}