International Topical Meeting on Nuclear Research Applications and Utilization of Accelerators

4-8 May 2009, Vienna

SM/SR-07

Benchmarking the CEM03.03 Event Generator

K. K. Gudima1, M. I. Baznat1, S. G. Mashnik2, and A. J. Sierk2

1Institute of Applied Physics, Academy of Science of Moldova, Chişinău, Moldova

2Los Alamos National Laboratory, Los Alamos, NM 87545, USA

Corresponding Author: gudima@theor.jinr.ru

The coalescence, preequilibrium, evaporation, fission, and Fermi breakup models used by the last versions of our Cascade-Exciton Model event generator CEM03.03 have been extendedrecently to improve description of complex particles productionfrom nuclear reactions. Here, we test how CEM03.03 describescomplex particle spectra and yields from all reactions includedin the Mandatory List of the International Benchmark of modelsorganized in 2008 under the auspices IAEA and discussed indetails at the Satellite Meeting ”Nuclear Spallation Reactions”,as well as from many other reactions not covered by theMandatory List. On the whole, CEM03.03 describes reasonablywell many measured data on production of d, t, He3, and He4 from various reactions. However, we identified several problems to be solved for a better description of complexparticles emission from some reactions, and we see a necessity to extend the preequilibrium emission for fragments heavierthan He4, currently neglected by CEM03.03.


This work was partially supported by the U.S. Department of Energy at Los Alamos National Laboratory under Contract No. DE-AC52-06NA25396