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// $Id: G4AlphaGEMProbability.cc,v 1.4 2006/06/29 20:20:21 gunter Exp $
// GEANT4 tag $Name: geant4-09-02 $
//
// Hadronic Process: Nuclear De-excitations
// by V. Lara (Nov 1999)
//


#include "G4AlphaGEMProbability.hh"

G4AlphaGEMProbability::G4AlphaGEMProbability() :
    G4GEMProbability(4,2,0.0) // A,Z,Gamma
{
    ExcitEnergies.push_back(20.01E+3*keV);
    ExcitSpins.push_back(0.0);
    ExcitLifetimes.push_back(207.0*keV);

    ExcitEnergies.push_back(21.18E+3*keV);
    ExcitSpins.push_back(0.0);
    ExcitLifetimes.push_back(0.73*MeV);

    ExcitEnergies.push_back(22.02E+3*keV);
    ExcitSpins.push_back(2.0);
    ExcitLifetimes.push_back(1.83*MeV);

    ExcitEnergies.push_back(25.33E+3*keV);
    ExcitSpins.push_back(1.0);
    ExcitLifetimes.push_back(2.36*MeV);

    SetExcitationEnergiesPtr(&ExcitEnergies);
    SetExcitationSpinsPtr(&ExcitSpins);
    SetExcitationLifetimesPtr(&ExcitLifetimes);
}


G4AlphaGEMProbability::G4AlphaGEMProbability(const G4AlphaGEMProbability &) : G4GEMProbability()
{
    throw G4HadronicException(__FILE__, __LINE__, "G4AlphaGEMProbability::copy_constructor meant to not be accessable");
}




const G4AlphaGEMProbability & G4AlphaGEMProbability::
operator=(const G4AlphaGEMProbability &)
{
    throw G4HadronicException(__FILE__, __LINE__, "G4AlphaGEMProbability::operator= meant to not be accessable");
    return *this;
}


G4bool G4AlphaGEMProbability::operator==(const G4AlphaGEMProbability &) const
{
    return false;
}

G4bool G4AlphaGEMProbability::operator!=(const G4AlphaGEMProbability &) const
{
    return true;
}


G4double G4AlphaGEMProbability::CCoeficient(const G4double aZ) const
{
    // Data comes from 
    // Dostrovsky, Fraenkel and Friedlander
    // Physical Review, vol 116, num. 3 1959
    // 
    // const G4int size = 5;
    // G4double Zlist[5] = { 10.0, 20.0, 30.0, 50.0, 70.0};
    //	G4double Calpha[5] = { 0.10, 0.10, 0.10, 0.08, 0.06};
    G4double C = 0.0;
	
	
    if (aZ <= 30) {
        C = 0.10;
    } else if (aZ <= 50) {
        C = 0.1 + -((aZ-50.)/20.)*0.02;
    } else if (aZ < 70) {
        C = 0.08 + -((aZ-70.)/20.)*0.02;
    } else {
        C = 0.06;
    }
    return C;
}