hitran2refr  Richard J. Mathar, J. Opt. A: Pure Appl. Opt. 9 (2007) 470
prconst.h
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1 #ifndef PR_CONST_H
2 #define PR_CONST_H
3 
4  /* molar gas constant, J /mol/K */
5 #define AVOGADRO 6.02214199e23
6 
7  /* Avogadro/ Loschmidt Number 1/mol */
8 #define RMOLAR 8.314472
9 
10  /* light velocity in vacuum m/s */
11 #define VACUUMC 2.99792458e+8
12 
13  /* Hartree in eV */
14 #define HARTREE 27.2113961
15 
16  /* elementary charge, Coulomb */
17 #define ECHARGE 1.602176462e-19
18 
19  /* electric constant in Farad/m */
20 #define EPSILONZERO 8.854187817e-12
21 
22  /* Planck constant divided by 2pi in J*s */
23 #define HBAR 1.05457168e-34
24 
25  /* electron rest mass in kg */
26 #define EMASS 9.10938188e-31
27 
28  /* h*c in eV*cm */
29 #define HC 1.23984244e-4
30 
31  /* Planck constant h in J*s */
32 #define PLANCK 6.6260693e-34
33 
34  /* Boltzmann k J/K */
35 #define BOLTZMANNK 1.3806505e-23
36 
37  /* molecular weight of 2*H+O; most common isotope 18.0105; the standard isotope mix
38  * is 18.01508; this here the Wagner-Pruss of J Phys Chem Ref Data 31, 387
39  */
40 #define WATERMOLWEIGHT 18.015268
41 
42  /* seconds per day, 24*3600 */
43 #define SECPERDAY 86400.
44 
45 #endif /* PR_CONST_H */