conversion factors for various units to/from atomic units based on the 2012-10-28 CODATA values from physics.nist.gov/constants More...

Variables
real(dp), parameter	au_as = 1.d0/24.18884326211233d0
	t [a.u.] = t [attoseconds] * au_as
real(dp), parameter	au_wcm2toel2 = 1.d0/3.5094452159384d16
	E_F [a.u.] = sqrt(I [W/cm²] * au_Wcm2toEL2),.
real(dp), parameter	au_wcm2 = 1.d0/6.436409342904736d15
	I [a.u.] = I [W/cm²] * au_Wcm2.
real(dp), parameter	au_cm = 1.d0/5.2917721092d-9
	x [a.u.] = x [cm] * au_cm
real(dp), parameter	au_nm = 1.d0/5.2917721092d-2
	x [a.u.] = x [nm] * au_nm
real(dp), parameter	au_c = 137.035999074
	speed of light in a.u. == 1/alpha
real(dp), parameter	au_ev = 1.d0/27.21138505732838d0
	E [a.u.] = E [eV] * au_eV (in Hartree atomic units).

Detailed Description

conversion factors for various units to/from atomic units based on the 2012-10-28 CODATA values from physics.nist.gov/constants

Variable Documentation

real(dp), parameter atomic_units::au_as = 1.d0/24.18884326211233d0

t [a.u.] = t [attoseconds] * au_as

Definition at line 9 of file atomic_units.f90.

real(dp), parameter atomic_units::au_wcm2toel2 = 1.d0/3.5094452159384d16

E_F [a.u.] = sqrt(I [W/cm²] * au_Wcm2toEL2),.

i.e. convert from intensity in W/cm² to peak electric field squared in a.u.

Definition at line 14 of file atomic_units.f90.

real(dp), parameter atomic_units::au_wcm2 = 1.d0/6.436409342904736d15

I [a.u.] = I [W/cm²] * au_Wcm2.

Definition at line 17 of file atomic_units.f90.

real(dp), parameter atomic_units::au_cm = 1.d0/5.2917721092d-9

x [a.u.] = x [cm] * au_cm

Definition at line 20 of file atomic_units.f90.

real(dp), parameter atomic_units::au_nm = 1.d0/5.2917721092d-2

x [a.u.] = x [nm] * au_nm

Definition at line 23 of file atomic_units.f90.

real(dp), parameter atomic_units::au_c = 137.035999074

speed of light in a.u. == 1/alpha

Definition at line 26 of file atomic_units.f90.

real(dp), parameter atomic_units::au_ev = 1.d0/27.21138505732838d0

E [a.u.] = E [eV] * au_eV (in Hartree atomic units).

Definition at line 29 of file atomic_units.f90.