MIL-HDBK-419A
h = HEIGHT OF BURST = 400 km = 250 MILES
s = DISTANCE TO HORIZON = 2,250 km = 1,400 MILES
A HIGH ALTITUDE BURST ILLUMINATES LARGE GEOGRAPHICAL REGIONS
WITH GAMMA RAYS.
Figure 10-1. EMP from High Altitude Bursts
Figure 10-2. Schematic Representation of High-Altitude EMP Generation
10-2