| constants
|
| name |
constant |
source |
| atomic
mass constant |
1.660
538 73 x 10-27 kg |
NIST
Fundamental Physical Constants |
| Avogadro
constant |
6.022
141 99 x 1023 mol-1 |
NIST
Fundamental Physical Constants |
| electron
volt |
1.602
176 462 x 10-19 J |
NIST
Fundamental Physical Constants |
| elementary
charge |
1.602
176 462 x 10-19 C |
NIST
Fundamental Physical Constants |
| Faraday
constant |
96
485.3415 C mol-1 |
NIST
Fundamental Physical Constants |
| Molar
Gas constant |
8.314
472 J mol-1 K-1 |
NIST
Fundamental Physical Constants |
| Newtonian
constant of gravitation |
6.673
x 10-11 m3 kg-1 s-2 |
NIST
Fundamental Physical Constants |
| Planck
constant |
6.626
068 76 x 10-34 J s |
NIST
Fundamental Physical Constants |
| Proton
Mass |
1.672
621 58 x 10-27 kg |
NIST
Fundamental Physical Constants |
| Rydberg
Constant |
10
973 731.568 549 m-1 |
NIST
Fundamental Physical Constants |
| Speed
of Light in Vaccum |
299
792 458 m s-1 |
NIST
Fundamental Physical Constants |
| Fine-Structure
constant |
7.297
352 533 x 10-3 |
NIST
Fundamental Physical Constants |
| Magnetic
constant |
4pi x 10-7 = 12.566 370 614... x 10-7 N A-2 |
NIST
Fundamental Physical Constants |
| conversion
factors |
| name |
conversion
factor |
source |
| dipole
moment |
1
debye = 3.335 64 × 10-30 C·m |
NIST
Wavenumber Conversion Tables |
| wavenumber |
1
cm-1 = 29 979.2458 MHz |
NIST
Wavenumber Conversion Tables |
| pressure |
1
atm = 101 325. Pa (pascal) |
NIST
Wavenumber Conversion Tables |
| pressure |
1
torr = 133.322 Pa |
NIST
Wavenumber Conversion Tables |
| absorption
intensity |
1
cm-2 atm-1 at 296 K = 4.033 × 10-20 cm/molecule |
NIST
Wavenumber Conversion Tables |
| equations |
| name |
equation |
source |
| Peak
intensity of a Lorentzian line |
%
transmission = 100 exp(-0.7789 × 1014 Slp/L),
where S is the intensity given in the tables, L is the Lorentzian
half-width at half height, l is the pathlength in cm, and
p is the pressure in Pa
|
NIST
Wavenumber Conversion Tables |
| Peak
intensity of a Doppler shaped line |
%
transmission = 100 exp(-1.1494 × 1014 Slp/D)
where S is the intensity given in the tables, l is the pathlength
in cm, and p is the pressure in Pa
|
NIST
Wavenumber Conversion Tables |
| Doppler
half-width at half intensity, D |
D
= 3.581 × 10-7 (T/M )1/2
where is the frequency in the same units as D , T is the temperature
in kelvin, and M is the mass of the molecule in atomic mass
units.
|
NIST
Wavenumber Conversion Tables |
| Boltzmann
factor |
Ni
= Nj exp(-1.439 Eij / T)
where
Ni is the population of the ith level and Nj is the population
of the jth level with energy difference in cm-1 of Eij at
a temperature of T kelvin.
|
NIST
Wavenumber Conversion Tables |
