All Questions
Tagged with magnetic-fields electrons
106
questions
0
votes
1
answer
35
views
Internally, what defines whether a material is magnetically hard or soft?
I know that magnetically hard materials hold magnetic fields (magnetic moment alignment) for longer, while soft metals do not. However, what, internally, causes these properties to arise?
1
vote
1
answer
132
views
Anisotropic screened Coulomb interaction for particles in a plasma
Background (isotropic screening): Consider a quasi neutral plasma. An ion/electron in a dense plasma attracts opposite-charged particles and repels
those with the same charge, thereby creating a "...
1
vote
0
answers
40
views
How would I calculate the minimum and maximum wavelength of the Bremsstrahlung released by an electron as it goes through a magnetic field?
Say, I have an electron gun and ground below it (with a potential difference of U) and two coils side by side between them producing a relatively homogenous magnetic field B. If I shoot an electron ...
2
votes
1
answer
2k
views
Why does a magnet loose magnetic strength when heated?
Magnet manufacturing companies, for example Dexter Magnetic Technologies do not hesitate to explain the effects of heat upon magnets - citing how it degenerates the magnetic properties with levels of ...
-3
votes
2
answers
90
views
Does electron moving in a circular motion inside a magnetic field experience acceleration? [closed]
I always thought that object turning means acceleration but what if an electron is caught inside a magnetic field that simply changes it path into a circular one so no electric field is allowed. The ...
1
vote
1
answer
54
views
Electron Orbit at the Null Point (DC sputter coating)
This situation pertains to 'thin film sputter coating.'
Suppose I have some magnets in between a high voltage anode and cathode in a suitable vacuum. I understand that the electrons get trapped in the ...
-1
votes
2
answers
426
views
Is there any difference in the the electric field of a proton and an electron?
The question which I was wondering about was that how does a positive charged particle know that the other particle is positively or negatively charged? Then I thought that maybe there is some ...
0
votes
1
answer
494
views
Direction of magnetic field in cathode ray tube experiment
In the diagram above, the S pole is pointing towards the cathode ray tube, and the magnetic field is coming out of the page causing the cathode rays to deflect upwards.
My question is, if it wasn't ...
0
votes
1
answer
178
views
Units of Pauli spin magnetization and Fermi energy of free electron gas
I cannot get the correct units for the magnetic susceptibility and the Fermi energy for a free electron gas!
According to "Introduction to Solid State Physics", 8th edition by Charles Kittel,...
-1
votes
1
answer
92
views
Do electron spin retain its up/down direction over time?
When high speed electrons are passed through non-homogeneous magnetic field, 50% of the electron will be deflected up, and the rest 50% will be deflected down (Stern Gerlach experiment).
Suppose the ...
-1
votes
1
answer
89
views
The magnetic dipole moment of electrons is not conserved?
The electron has a constant value of its magnetic dipole NIST. How then is "Magnetic dipole moments are neither conserved nor quantized" to be understood?
2
votes
2
answers
223
views
Is a moving electret considered a current, and would spinning one make a magnet?
If I establish a permanent electric charge on some volume of material (as in an electret) and then move that material through space — is that motion equivalent to a current in a wire?
Also, since a ...
1
vote
0
answers
19
views
Qualitatively, how would you model the electron in a Penning trap quantum mechanically?
I know there are articles that give a full treatment of the math, but I'm more interested in the concept. I get that, in the classical picture, we are measuring the oscillation frequency of the ...
3
votes
1
answer
80
views
Magnetic field by a electron
In an atom there are $n$ electrons and the $n$th electron creates a magnetic field, as it has velocity and the other $n-1$ electrons will be affected by this force. But still, why aren't we ...
5
votes
2
answers
2k
views
Can relativity explain the magnetic attraction between two parallel electrons or electron beams comoving in a vacuum? (No wires)
How can relativity explain the magnetic attraction of two electrons (or two electron beams) comoving in a vacuum at some certain constant velocity?
It is well known (https://acceleratorinstitute.web....