All Questions
Tagged with electromagnetic-radiation nuclear-physics
42
questions
8
votes
4
answers
2k
views
How can photons interact with nuclei?
How can photons such as X-rays or gamma rays interact with the nuclei of atoms given that, as I understand it, the length scale of a nucleus is around a couple of femtometers? So, shouldn’t the size ...
- 133
2
votes
0
answers
62
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The $\alpha$ particle's energy inside a nucleus is lesser than the Coulomb barrier height. Justify
The $\alpha$-decay is usually explained via quantum tunnelling. This is because the $\alpha$ particles do not have sufficient energy to climb over the Coulomb barrier. But how do we know this?
We can ...
- 11.8k
0
votes
1
answer
48
views
Thomson Scattering when low intensity light meets an orbital electron
Can you explain to me the reason why Thomson Scattering can not explain what happens when light meets an electron at low intensity, and what does that have to do with light being a wave or particle or ...
- 151
0
votes
0
answers
26
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How does a photon interact with EM field of a nucleus thus exchange momentum and recoil the nucleus when pair production happens? [duplicate]
The photon must be near a nucleus in order to satisfy conservation of momentum, as an electron–positron pair produced in free space cannot satisfy conservation of both energy and momentum.[4] Because ...
- 151
0
votes
2
answers
156
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Why take into account deceleration radiation only, but not acceleration radiation when Bremsstrahlung happens?
Why only take into account deceleration radiation rather than the radiation caused by acceleration when going tangent towards the nucleus and acceleration caused by the change in direction when flyby ...
- 151
0
votes
1
answer
130
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Why isn't there Bremsstrahlung Radiation for Energy less than 20 keV for Tungsten?
https://www.researchgate.net/figure/Bremsstrahlung-and-characteristic-radiation-spectra-are-shown-for-a-tungsten-anode-with_fig4_8365056
Fast electrons produce X-rays in the anode of an X-ray tube ...
- 151
4
votes
1
answer
88
views
How does inner Bremsstrahlung work?
I'm trying to understand inner Bremsstrahlung. I know this applies to beta minus decay, but have a hard time understanding how it works. In the beta decay, electron is emitted from nucleus. I believe ...
- 200
1
vote
0
answers
32
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Could somebody explain alpha channeling in tokamaks?
Could somebody explain alpha channeling in Tokamaks and mirror machines? Energetic alpha particles (in the center of the torus or mirror device) born in fusion reactions, interact with a wave and ...
- 345
0
votes
0
answers
53
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How many alpha and gamma rays are given off from nuclear waste uranium 235
From the products of uranium 235 waste how much total energy / beta, alpha, gamma rays would be emitted from the decay of uranium 235 over its time of decay.
- 1
0
votes
2
answers
72
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What may cause voltage between 2 distant probes of multimeter in apartment room?
In an empty apartment room,my multimeter shows 3.6 mV voltage when I put 2 probes with 2 meters distance.
I am curious,what may cause voltage between 2 distant probes of multimeter in apartment room?
...
- 127
1
vote
1
answer
73
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Can fusional nuclear compression theoretically be achieved with a unidirectional compressive force?
In other words, is it theoretically possible to get an energy-profittable nuclear fusion reaction by simply slamming compressive force into some nuclei from a single laser compressing from one ...
- 29
1
vote
1
answer
89
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What is passive gamma ray emission?
I was trying to find the meaning of passive gamma-ray emission through the internet. I haven't found any helpful article except some research paper just denoting the word passive ray emission. They ...
-2
votes
2
answers
161
views
Why don't spinning protons stop?
The Bohr model in which electrons orbit a nucleus can be shot down quickly on the grounds that the electron would have to be accelerating in order to stay in an orbit, an accelerating charge radiates ...
- 217
3
votes
0
answers
31
views
How nucleons get excited? [duplicate]
Gamma rays can be released when nucleons at higher energy states fall down to lower energy states, but how do nucleons get that much high energy to release gamma rays?
- 31
4
votes
0
answers
49
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What is the lowermost energy a photon can be emitted by hyperfine transitions?
The 21 centimeter Hydrogen line comes from the hyperfine transition from its one electron, which leads to a photon with the energy of $2.24\times10^{-25}$ joules being emitted.
Can lower energy levels ...
- 441