Abstract.
In many applications of the intranuclear-cascade (INC) model to spallation reactions, all nucleons in the target are assumed to move in a common potential well. However, the potential depth should depend upon nucleon isospin and energy. The present paper describes the first results obtained after the introduction of these features in the Liége INCL3 model. It is shown that such modifications change cascade particle multiplicities significantly but total particle multiplicities are only slightly altered. Nucleon inclusive cross-sections are not modified significantly, except in the region of the quasi-elastic peaks. In particular, the centroid of the peak in neutron double differential cross-sections relative to proton-induced reactions can be sizeably shifted toward larger energy losses, as is observed experimentally. Implications of these results are discussed.
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References
A. Boudard, J. Cugnon, S. Leray, C. Volant, Phys. Rev. C 66, 044615 (2002).
J.-J. Gaimard, K.-H. Schmidt, Nucl. Phys. A 531, 709 (1991).
A.R. Junghans, M. de Jong, H.G. Clerc, A.V. Ignatyuk, G.A. Kudyaev, K.-H. Schmidt, Nucl. Phys. A 629, 635 (1998).
Y. Yariv, Proceedings of the SARE-5 Meeting, edited by D. Filges, F. Goldenbaum, Y. Yariv, (Forschungszentrum Jülich pulication ESS 112-01-T, 2001).
J. Cugnon, C. Volant, S. Vuillier, Nucl. Phys. A 620, 475 (1997).
T. Ericson, W. Weise, Pions and Nuclei (Clarendon Press, Oxford, 1988).
L. Dresner, Oak Ridge report ORNL-TM-193 (1962).
P.E. Hodgson, E. Gadioli, E. Gadioli Erba, Introductory Nuclear Physics (Clarendon Press, Oxford, 1997).
M.A. Preston, R.K. Bhaduri, Introductory Nuclear Physics (Addison-Wesley, 1995).
T. Koopman, Physica 1, 104 (1934).
A.H. Wapstra, G. Audi, Nucl. Phys. A 432, 55 (1985).
B. ter Haar, R. Malfliet, Phys. Rev. C 36, 1611 (1987).
P.E. Hodgson, The Nucleon Optical Potential (World Scientific, Singapore, 1994).
J.-P. Jeukenne, A. Lejeune, C. Mahaux, Phys. Rep. C 25, 83 (1976).
J.-P. Jeukenne, C. Mahaux, R. Sartor, Phys. Rev. C 43, 2211 (1991).
C.H. Johnson, D.J. Horen, C. Mahaux, Phys. Rev. C 36, 2252 (1987).
J. Cugnon, C. Volant, S. Vuillier, Nucl. Phys. A 625, 729 (1997).
S. Leray et al. , Phys. Rev. C 65, 044621 (2002)
R.E. Chrien et al. , Phys. Rev. C 21, 1014 (1980).
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Communicated by G. Orlandini
Received: 28 October 2003, Published online: 13 July 2004
PACS:
25.40.-h Nucleon-induced reactions - 24.10.-i Nuclear reaction models and methods - 24.10.Lx Monte Carlo simulations (including hadron and parton cascades and string breaking models)
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Aoust, T., Cugnon, J. Effects of isospin and energy dependences of the nuclear mean field in spallation reactions. Eur. Phys. J. A 21, 79–85 (2004). https://doi.org/10.1140/epja/i2003-10186-y
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DOI: https://doi.org/10.1140/epja/i2003-10186-y