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CFus.h
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CFus.h
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#include "CMass.h"
//folowing is needed in ROOT version
//#include "Rtypes.h"
/**
*!\brief fusion xsection, Bass model, excitation energy in fusion
*
* class to determine excitation energy and
*the critical angular momemtum in fusion.
* The fusion xsection \f$ \sigma(\ell) = \pi\lambda^2 \sum \frac{2\ell +1}
{1+\exp\left(\frac{\ell-\ell_0}{\Delta_{\ell}}\right)}\f$
* where \f$\lambda\f$ is really lambdabar
* \f$ \Delta_{\ell}\f$ is the diffuseness
*/
class CFus
{
protected:
int iZp; //!< projectile proton number
int iAp; //!<projectle mass number
int iZt; //!<target proton number
int iAt; //!<target mass number
float fElab; //!< lab energy in MeV
float R12; //!< sum of radii
float U; //!< reduced mass
float A; //!< const for Coulomb potential
float B; //!< const for centrifugal potential
float C; //!< nuclear potential constant
static float const D; //!< Bass potential parameter
static float const E; //!< Bass potential parameter
static float const G; //!< Bass potential parameter
static float const H; //!< Bass potential parameter
float E1; //!< critical energy 1 in Bass Model
float E2; //!< critical energy 2 in Bass Model
float MAX; //!< maximum L for fusion barrier
float CL1; //!< angular momentum assocaited with E1
float CL2; //!< angular momentum associated with E2
float W[300]; //!< fusion barrier for each L
float F(float R,float AL);
float FF(float R,float AL);
float FFF(float R,float AL);
float FFFF(float R, float AL);
public:
float plb; //!< pi-lambdabar-squared in mb
float dif; //!<diffuseness
float Ecm; //!<reaction center of mass energy in MeV
float vcm; //!<Compound nucleus velocity in cm/ns
float vbeam; //!<beam velocity in cm/ns
float Ex; //!< excitation energy
int iZcn; //!< compound nucleus atomic number
int iAcn;//!< compound nucleus mass number
CFus(float plb0,float dif0);
CFus(int iZprojectile, int iAprojectile,
int iZtarget, int iAtarget, float ELab, float dif0);
void init(float plb0,float dif0);
float getL0(float xsection);
float getBassL();
float getBassXsec();
//following is needed in ROOT version
//ClassDef(CFus,1); //Gemini CFus
};

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