The discussion revolves around whether a neutral atom can be affected by a magnetic field, particularly focusing on the conditions under which this may occur. Participants explore theoretical implications, specific examples, and the behavior of neutral atoms in magnetic fields.
Participants express differing views on the effects of magnetic fields on neutral atoms, with some arguing that certain neutral atoms can be influenced while others question the conditions under which this occurs. The discussion remains unresolved regarding the general behavior of neutral atoms in magnetic fields.
There are limitations regarding the assumptions made about the magnetic moments of different atoms and the conditions under which they may or may not be affected by magnetic fields. The discussion also touches on specific cases like Helium-4 and the implications of motion in magnetic fields, which remain open to interpretation.
This discussion may be of interest to those studying atomic physics, magnetism, or the behavior of neutral particles in magnetic fields, as well as individuals exploring the theoretical aspects of atomic interactions with external forces.
s0ft said:So, if the atom had a zero net magnetic moment, then it wouldn't be affected right?
And is such an atom possible?
LastOneStanding said:Right.
Yes. un-ionized, unexcited Helium-4 has no magnetic moment: its electrons are both in the s-orbital (so no angular momentum) and the two electrons, two protons, and two neutrons are all respectively anti-parallel, so there is no total magnetic moment due to spin.
s0ft said:If we have a moving, neutral atom, say hydrogen, will it react to a magnetic field?
If yes, why?
If you ask why not, I argue that the atom as a whole is a chargeless entity.