Duration of one pulse, expressing how long the field stays at significant strength per cycle. Longer pulse widths deliver more cumulative field exposure. Duty cycle is simply pulse width divided by the full period. Measurement depends on the device topology. For monopolar pulses (a single excursion from baseline), it's the time between the 50% amplitude crossings on the leading and trailing edges. For bipolar damped-sine bursts (loop coils driven by capacitor discharge that ring through multiple cycles), it's the full burst-on duration. That's measured from the first sample above 10% of dominant amplitude to the last, so duty cycle reflects burst-on time rather than a single carrier half-cycle.
One pulse over time. The field climbs from rest to its peak, holds, then falls back. How fast that rising edge climbs is the slew rate, and a steeper edge drives a stronger stimulus. The rise time and fall time are measured between the 10% and 90% levels; the pulse width is measured at half the peak.
