diff options
Diffstat (limited to 'fresnel/README')
| -rw-r--r-- | fresnel/README | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/fresnel/README b/fresnel/README new file mode 100644 index 0000000..b09fe65 --- /dev/null +++ b/fresnel/README @@ -0,0 +1,28 @@ + + Fresnel reflectivity +------------------------------------------------------------------------------------------ + +This program calculates the flux of light I(t) reflected from a +step plasma profile. +The laser pulse is assumed to have rectangular shape. + +Input parameters are + - plasma frequency in units of the laser frequency + - incident laser amplitude (= lpic++ amplitude a0) + - angle of incidence + - polarization (s or p) + - pulse duration in laser cycles + - number of time steps per cycle + - output path +These paramters are entered by editing the input file 'input.fresnel'. + +Results are written to file 'reflex', 'reflex-avg' and 'reflex-int'. + 'reflex' : reflected intensity as a function of time + 'reflex-avg' : cycle-averaged reflectivity ( <I(t)>/I0 ) + 'reflex-int' : integrand for the numerical integration, + only for those who are very much interested! + +Notice: To compare the reflected flux with lpic++ results, you have + to shift the reflected flux in time corresponding to the + time the laser light needs for reaching the surface and + returning to the box boundary. |