Measurement of the proton moment in absolute units

Abstract

By measuring the absolute value of the magnetic fi eld a nd t he frequcncy requ ircd for nuclear resonance absorption in a water sample, the gyro magnctic ratio of t hc proton has been d etermined to be 'Y p = (2.67528 0.00006) X 10 4 sec-1 gauss-I. Us in g this valu c with P lanck's constant, the valu e of the magnetic momcnt of the proton in a bsolutc units becomes }1op = (1. 4100 0.0002) X 10-23 dyne cm/gauss.