All Questions
Tagged with magnetic-fields electrons
106
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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?
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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 ...
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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 ...
- 13k
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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 ...
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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,...
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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 ...
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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?
- 10.6k
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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 ...
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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 ...
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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 ...
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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 "...
- 5,068
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242
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Electron in varying magnetic field
Lets consider an electron that is placed in an existing, constant in space near the electron, magnetic field. Electron is stationary. Magnetic field over time gradually reduces to zero.
I assume ...
- 1,106
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Why does a moving charge experience force with a bar magent unlike getting attracted or repelling to it like two bar magnets would do?
i wanted to know why does a moving charge and bar magnet not experience force similar to how two bar magnets experience since they both have magnetic fields. In bar magnets they attract or repel but ...
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168
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High speed electron and magnetic field
We know that when an electron moves at a velocity,it produces magnetic field.
My question is how strong the magnetic field will be if electron moves at a velocity $v$ or with an acceleration $a$ and ...
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Force on current carrying wire due to moving charges
Consider a situation where an electron traveling at a very high velocity enters in a magnetic region created by a current carrying wire.
This means a force will act on the electron and it will deflect ...