All Questions
Tagged with electromagnetic-radiation nuclear-physics
42
questions
4
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1
answer
5k
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Gamma spectroscopy - Table of radioactive isotopes with gamma energy search
For anyone doing gamma spectroscopy by hand, the task is considerably eased by tables like this:
http://nucleardata.nuclear.lu.se/toi/
Where not only can you search for particular nuclides, but you ...
- 1,756
1
vote
1
answer
237
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Gamma spectroscopy – What is this structure?
What is this strange structure in the gamma spectrum between 450 and 550 keV (below) around the peak at 477 keV? The spectrum seems to rise to a plateau (almost like a small Compton plateau) around ...
- 1,756
0
votes
0
answers
236
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Coincidence summing in gamma spectrum
Question on coincidence summing here. I've been reading about the coincidence summing effect when a radionuclide has two energy levels that decay to another state in rapid succession.
There is also ...
- 1,756
2
votes
1
answer
3k
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Should I observe single/double escape peaks for all energies above 1022 keV
I have already asked a question similar to this, but that question was specifically relating to the case of K-40. I'm going to generalize it to any case
My question is to do with the field of gamma ...
- 1,756
2
votes
2
answers
787
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Would it be possible to detect nuclear explosion on exoplanet?
How strong would have to be nuclear explosion on exo-planet that orbits some other star for it to be detectable outside of that system.
Or it would be impossible due to amount of radiation coming from ...
- 1,125
9
votes
1
answer
495
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Why do excited states in $^4$He not decay by photon emission?
Here's a level scheme for the $^4$He nucleus (source; click image to see full size):
Notice that all of the confirmed decay modes are by disintegration — emission of a neutron, proton, or deuteron. ...
rob♦
- 91.6k
5
votes
1
answer
2k
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Why 3He(n,p)3H nuclear reaction proceeds but 3He(n,gamma)4He heavily suppressed?
The neutron capture reaction 3He(n,p)3H is very useful for neutron detection as the Q value of ~700keV is converted to kinetic energies in the produced p and 3H. These charged products can then ionize ...
- 373
-1
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2
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What is the theoretical wattage output of a Tokamak fusion reactor?
By that I mean the complete radiative wattage of any type of energetic radioactivity or electromagnetic wave or even particle if that's what they output.
My purpose is to compare this to the suns ...
1
vote
1
answer
540
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Are multipole fields, multipole expansion, and multipole radiation the same thing?
Interaction between electromagnetic radiation and nuclei can be written in terms of multipole radiation. Are multipole fields, multipole expansion and multipole radiation the same thing?
I have found ...
- 651
2
votes
3
answers
3k
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Bremsstrahlung: why is electron slowed/stopped by the positive nucleus?
I can't understand why the electron is slowed/stopped by the nucleus.
The electron is a negative charge and the nucleus is positive... they should attract each other...
- 1,133
1
vote
3
answers
532
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Do Nuclear Power Plants have shutdown and cooling systems protected from a nuclear generated EMP? [closed]
Forty years ago, I read a report concerning the difficulties of protecting my companies equipment, which was to be installed in Air Force One, from a Nuclear EMP. An EMP generated by a high altitude ...
- 11
5
votes
2
answers
983
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Xray compression of secondary in hydrogen bomb
Accounts of the "secret" of the hydrogen bomb describe Xrays from a primary fission explosion reflecting off of the bomb case (occasionally passing through polystyrene foam) and compressing and ...
- 1,484