Magnetic field effect on gas particles

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SUMMARY

The discussion focuses on the effect of magnetic fields on gas particles, specifically addressing Larmor precession and the conditions under which it occurs. Larmor precession is relevant primarily for atoms with a magnetic moment, such as Hydrogen and the isotope O17, while common gases like O16 do not exhibit this phenomenon. Additionally, the conversation highlights the concept of electron paramagnetic resonance in organic free radicals and notes that ionized plasmas experience a net force from magnetic fields.

PREREQUISITES
  • Understanding of Larmor precession in magnetic fields
  • Knowledge of atomic magnetic moments, particularly in Hydrogen and isotopes
  • Familiarity with electron paramagnetic resonance and its applications
  • Basic principles of ionized plasmas and their behavior in magnetic fields
NEXT STEPS
  • Research the principles of Larmor precession in detail
  • Explore the properties and applications of electron paramagnetic resonance
  • Study the behavior of ionized plasmas in magnetic fields
  • Investigate the magnetic moments of various gas isotopes
USEFUL FOR

Physicists, chemists, and researchers interested in the interactions between magnetic fields and gas particles, particularly in fields such as plasma physics and magnetic resonance.

yashar_g
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Hi, My question is regarding to the effect of magnetic field on gas particles.As you all know, according to the Larmour precession, each atom has a rotating movement in the magnetic field. Now my question is that except of the Larmour precession described above, is there any gas atom which has other movement(force) throgh gas ??

Thanks.
 
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The Larmor precession only occurs if the nucleus has a magnetic moment, and most gases do not. Hydrogen does. The common O16 does not, but the rare isotope O17 does.

Not sure what you mean by "rotating movement", either. The effect is a precession of the nucleus (in the case you describe), not an overall atomic movement.

There is a related effect called electron paramagnetic resonance which uses the moment of an unpaired electron in, e.g., organic free radicals.
 
Helium and (I think) Xenon also have isotopes with magnetic moments. And, of course, Hydrogen.

As marcusl said the precession does not result in an overall net force on the nucleii. However, if the gas is an ionized plasma then the magnetic field will indeed exert a net force on the ions.
 

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