IGNOU MPH 17 2026 - Explain and justify the observed deviations in magnetic dipole m

Question

Explain and justify the observed deviations in magnetic dipole moment and quadrupole moment of deuteron.

19 Jan 2026

Answer :

Word Count : 319

The deuteron, consisting of a proton and a neutron bound together, is the simplest nucleus with more than one nucleon. Its magnetic dipole moment and quadrupole moment provide insight into its internal structure and nucleon interactions. The magnetic dipole moment of a deuteron, experimentally measured as ( \mu_d = 0.857 , \mu_N ) ((\mu_N) is the nuclear magneton), deviates from the simple prediction obtained by assuming a pure S-wave ((l=0)) configuration of proton and neutron spins. If the deuteron were a pure S-state, the magnetic moment would be the vector sum of the proton and neutron moments: [ \mu_d^{\text{S-wave}} = \mu_p + \mu_n = 2.793 - 1.913 = 0.880 , \mu_N ] The small deviation ((0.880 - 0.857

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