Estimation of non-linearity in NMR polarization measurement

The non-linearity of the proton NMR signal of the SMC target during the 1993 run is considered here. It is estimated that the highest negative (positive) polarizations were systematically overestimated (underestimated) by about 5% when the total scan width used was 400 kHz, and by about 3% when the total scan width was 600 kHz.