Objective

To develop a computational scheme in order to describe the de-excitation of a compound nucleus with evaporation and sequential binary decay.  

Code description 

MECO (Multisequential Evaporation COde) is a Monte Carlo computer code designed to simulate the compound nucleus decay. The code treats asymmetric mass splittings involving nucleon emission together with symmetric binary ones according to a generalized Weisskopf evaporation formalism. Emitted fragments in their ground, excited-bound and unbound states are considered.

The Monte Carlo method allows a simulation of the experimental conditions. Events that contain information on the emitted particles and secondary decay products can be obtained to compare with the observables.

Applications

MECO is currently being tested in conjunction with Intranuclear cascade codes for the description of spallation reactions.

References

• Sequential binary decay of highly excited nuclei, N.G. Nicolis, Int. J. Mod. Phys. E17, 1541 (2008).
• The equilibrium decay stage in proton-induced spallation reactions, Nikolaos G. Nicolis in Multifragmentation in Heavy‐Ion Reactions: Theory and Experiments, Chapter 16, Edited by Rajeev K. Puri, Yu‐Gang Ma, and Arun Sharma, Copyright © 2023 Jenny Stanford Publishing Pte.Ltd.