Chapter 12, Problem 12C.1DQ

Interpretation Introduction

Interpretation:

The effect of $90°$ and $180°$ pulse on a system of spin $-\frac{1}{2}$ nuclei has to be stated.

Concept introduction:

In fourier transform NMR, the nuclear spins are exposed to radiofrequency radiation.  This radiation has frequency near to or equal to the Larmor frequency which leads to excitation of spins.  The spins on reaching back to equilibrium emit radiation.  This emitted signal is recorded with respect to time and the signal is fourier transformed and computed.