RF Excitation and Relaxation A rectangular RF pulse (shown in fig.) given by
B1(t) = A rect(t/10^-5) [cos(2TTVot)X + sin(2TrVot)y]
is used to tip the magnetization vector away from its equilibrium position along the z-axis by 150. What is the value of A required to achieve this tip angle? (10 points)
