Energy Converter

Energy Conversion:

1 degree kelvin = 8.621738 x 10^-5 eV

= 0.0862 meV

= 0.695 cm-1

1 a.u= 27.211396 eV= 219 474.63 05 cm^-1

1 Ry= 13.6057 eV

1 eV= 8065.54 cm^-1

1 eV= 11,600 degreesKelvin

1 meV= 8.065 cm^-1

1 Kcal/mol= 0.0434 eV= 43.4 meV

Photon momentum k= 2.7 x 10^-4 E (eV)

Atomic units:

in time= a /v0= 2.41 x10^-17 sec

in frequency= 4.13 x10^16 Hz

in electric field= 5.14 x 10^9 V/cm

Oscillator strength and transition rates

A=2*(E^2/c^3) f (4.13 x10^16) 1/sec

where E is in a.u., c=137.03604 and f is the oscillator strength for emission

Laser intensity and field strength

1 a.u. in E= 5 x 10^9 V/cm

1 a.u. in intensity= 3.5 x 10^16 (w/cm^2)

I (watts/cm^2)= 1.33 x 10^-3 E2 (V/cm^2)

Energy difference between D (1s) and H (1s) is 3.7 meV, or 1.36 x 10^-4 a.u.

mass of proton in a.u.is 1836.152701

mass of deuteron in a.u. is 3670.483014

mass of neutron in a.u. is 1838.683662