PHASE-OTI: A pre-equilibrium model code for nuclear reactions calculations

The present work focuses on a pre-equilibrium nuclear reaction code (based on the one, two and infinity hypothesis of pre-equilibrium nuclear reactions). In the PHASE-OTI code, pre-equilibrium decays are assumed to be single nucleon emissions, and the statistical probabilities come from the independence of nuclei decay. The code has proved to be a good tool to provide predictions of energy-differential cross sections. The probability of emission was calculated statistically using bases of hybrid model and exciton model. However, more precise depletion factors were used in the calculations. The present calculations were restricted to nucleon–nucleon interactions and one nucleon emission.Program summaryProgram title: PHASE-OTICatalogue identifier: AEDN_v1_0Program summary URL:http://cpc.cs.qub.ac.uk/summaries/AEDN_v1_0.htmlProgram obtainable from: CPC Program Library, Queen's University, Belfast, N. IrelandLicensing provisions: Standard CPC licence, http://cpc.cs.qub.ac.uk/licence/licence.htmlNo. of lines in distributed program, including test data, etc.: 5858No. of bytes in distributed program, including test data, etc.: 149 405Distribution format: tar.gzProgramming language: Fortran 77Computer: Pentium 4 and Centrino DuoOperating system: MS WindowsRAM: 128 MBClassification: 17.12Nature of problem: Calculation of the differential cross section for nucleon induced nuclear reaction in the framework of pre-equilibrium emission model.Solution method: Single neutron emission was treated by assuming occurrence of the reaction in successive steps. Each step is called phase because of the phase transition nature of the theory. The probability of emission was calculated statistically using bases of hybrid model [1] and exciton model [2]. However, more precise depletion factor was used in the calculations. Exciton configuration used in the code is that described in earlier work [3].Restrictions: The program is restricted to single nucleon emission and nucleon–nucleon interactions.Running time: 5–30 minutesReferences:[1]M. Blann, Phys. Rev. Lett. 27 (1971) 337.[2]E. Gadioli, E.G. Erba, J.J. Hogan, Phys. Rev. C 16 (1977) 1404–1424.[3]E.K. Elmaghraby, Phys. Rev. C 78 (2008) 014601.