c
c	use rationalized atomic scale units
c
c	time: femtoseconds [10**(-15) sec]
c
c	distance: Angstrom [10**(-10) m]
c
c	mass:	10**(-28) kg
c
c	energy: 10**(-18) J [6.241808 eV]
c
c	velocity A/fs [10**5 m/sec]
c
c	pressure: 10**(13) Pa (10 TPa, 100 Mbar)
c

        parameter (EtoK=72435.42d0)
        parameter (EtoeV=6.241808d0)
        parameter (AMUtoM=16.6043d0)
        parameter (EtoH=0.229387274d0)
        parameter (AUtoA=0.52917d0)