The Sigma Program - Software Version History


Date Version Description
02/11/1995 feb95 original version including subroutine adj_r calculating the (12,6,4) ion-helium interaction and including option for compiling on multi-node systems
12/21/1995 dec95 minor bug fixes
09/24/1998 sep98 addition of subroutine adjheion calculating the (12,6,4) ion-helium interaction scaled to the size of the ion (number of atoms)
09/17/2002 aug02 minor bug fixes; improvement of perfomance