
            D I S S O C I A T I V E     A T T A C H M E N T

      This part of the code is still under development.

      Data required for dissociative attachment is input via 
         NAMELIST/DISDAT/ 

        The format of the following is 
       (Name, Type, Dimension, Default, Limits, ! description)
        Unless specified otherwise, the default value applies to all elements
        of array variables.
        
        RA        R   1              [R(NGEOM):]
           ! radius at which asymptotic form of the potential may be used      

        DE        R   1              [:]
           ! dissociation energy in au 

        D         R   1              [:]
           ! parameter of morse curve used at intermediate R

        BETA      R   1              [:]
           ! parameter of morse curve used at intermediate R

        RE        R   1              [:]
           ! parameter of morse curve used at intermediate R

        C3        R   1      0.      [:]
           ! coefficient of R**(-3) in asymptotic potential

        C4        R   1      0.      [:]
           ! coefficient of R**(-4) in asymptotic potential

        EPSD      R   1    1.D-8     [:]
           !  convergence control
