diff options
Diffstat (limited to 'src/detector.c')
| -rw-r--r-- | src/detector.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/src/detector.c b/src/detector.c index 2b0c12d4..339ff626 100644 --- a/src/detector.c +++ b/src/detector.c @@ -26,26 +26,32 @@ void record_image(struct image *image) { int x, y; double ph_per_e; + double twotheta_max, np, sa_per_pixel; /* How many photons are scattered per electron? */ ph_per_e = PULSE_ENERGY_DENSITY * pow(THOMSON_LENGTH, 2.0) / image->xray_energy; - printf("%e photons are scattered per electron\n", ph_per_e); + twotheta_max = image->twotheta[0]; + + np = sqrt(pow(image->x_centre, 2.0) + pow(image->y_centre, 2.0)); + sa_per_pixel = pow(2.0 * twotheta_max / np, 2.0); + printf("sa per pixel=%e\n", sa_per_pixel); + image->data = malloc(image->width * image->height * sizeof(uint16_t)); for ( x=0; x<image->width; x++ ) { for ( y=0; y<image->height; y++ ) { - uint16_t counts; + double counts; double val, intensity; double sa; val = image->sfacs[x + image->width*y]; /* What solid angle is subtended by this pixel? */ - sa = 1.0; + sa = sa_per_pixel * cos(image->twotheta[x + image->width*y]); intensity = pow(val, 2.0); counts = intensity * ph_per_e * sa; |