The duration of a 90 or 180 pulse depends on the strength of the B1 field. If a 90 pulse
Chapter 15, Problem 15.15(a)(choose chapter or problem)
The duration of a 90 or 180 pulse depends on the strength of the B1 field. If a 90 pulse requires 10 s, what is the strength of the B1 field? How long would the corresponding 180 pulse require?
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer