The most accurate observations, made since 1991, show the small gradual change in the pulse spacing
Measurements include interrogator transmitter frequency/peak power, Pulse Repetition Frequency (PRF), P1/P2 width and pulse spacing
The application required the use of a very low inductance transformer in order to achieve close pulse spacing
without compensation adjustments.
Additionally, assuming that the pulse spacing
is related to the physical turn spacing, the armature impact axial velocity determined from the crashed fiber diagnostic is very close to the C4 detonation velocity.