Question:
The working of the proton-precession magnetometer is based on:
The working of the proton-precession magnetometer is based on:
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Proton-precession magnetometers use hydrogen nuclei because protons have a magnetic moment due to their spin, and precess in an external magnetic field.
Updated On: Apr 21, 2025
- the magnetic moment of hydrogen-atom nucleus being proportional to the angular momentum of its spin
- the fact that oxygen is diamagnetic
- the fact that the lowest energy level of electrons is in the ground state
- the Zeeman effect
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The Correct Option is A
Solution and Explanation
Step 1: Understanding proton-precession magnetometers.
These magnetometers rely on the precession of the magnetic moment of protons (typically in hydrogen atoms) in an external magnetic field. Step 2: Principle of operation.
The magnetic moment of a proton is directly proportional to its spin angular momentum. When placed in a magnetic field, it undergoes Larmor precession at a frequency proportional to the strength of the magnetic field, which is what the instrument detects.
These magnetometers rely on the precession of the magnetic moment of protons (typically in hydrogen atoms) in an external magnetic field. Step 2: Principle of operation.
The magnetic moment of a proton is directly proportional to its spin angular momentum. When placed in a magnetic field, it undergoes Larmor precession at a frequency proportional to the strength of the magnetic field, which is what the instrument detects.
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