diff options
| author | Thomas White <taw@physics.org> | 2009-11-13 12:10:12 +0100 |
|---|---|---|
| committer | Thomas White <taw@physics.org> | 2009-11-13 12:10:12 +0100 |
| commit | ef6a971cf432321ceb057b8c355c8e6814d5aff6 (patch) | |
| tree | 1d8d7373a1b7c1591cf28fcf61230122e19c1ca4 /src/utils.h | |
| parent | 857cc8c991a5ee4e717d01822da271ae34f5adaa (diff) | |
Work in progress on photon correctness
Diffstat (limited to 'src/utils.h')
| -rw-r--r-- | src/utils.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/utils.h b/src/utils.h index f1b72af8..1de0ea09 100644 --- a/src/utils.h +++ b/src/utils.h @@ -18,6 +18,20 @@ #include <math.h> + +/* Electron charge in C */ +#define ELECTRON_CHARGE (1.6021773e-19) + +/* Planck's constant (Js) */ +#define PLANCK (6.62606896e-34) + +/* Speed of light in vacuo (m/s) */ +#define C_VACUO (299792458) + +/* Thomson scattering length (m) */ +#define THOMSON_LENGTH (2.81794e-15) + + extern unsigned int biggest(signed int a, signed int b); extern unsigned int smallest(signed int a, signed int b); extern double distance(double x1, double y1, double x2, double y2); @@ -42,4 +56,16 @@ extern void mapping_rotate(double x, double y, double z, #define is_odd(a) ((a)%2==1) +/* Photon energy (J) to wavelength (m) */ +#define ph_en_to_lambda(a) ((PLANCK*C_VACUO)/(a)) + +/* Photon wavelength (m) to energy (J) */ +#define ph_lambda_to_en(a) ((PLANCK*C_VACUO)/(a)) + +/* eV to Joules */ +#define eV_to_J(a) ((a)*ELECTRON_CHARGE) + +/* Joules to eV */ +#define J_to_eV(a) ((a)/ELECTRON_CHARGE) + #endif /* UTILS_H */ |