All Questions
Tagged with neutrons particle-physics
89
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2
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48
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Is it possible to produce a focused, high-intensity neutron beam?
Since neutrons are uncharged, exceptionally hard to control, my understanding is that particle accelerators can never directly produce a beam of neutrons. Instead, they need to accelerate some charged ...
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8
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2
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2k
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How does a photon "cheat" its way past a neutron?
I learnt here Is a neutron deflected sideways by a laser beam? that a photon beam has no influence on the motion of a free neutron in the first and second approximation. Now I'm interested in what ...
- 10.6k
1
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1
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179
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Is a neutron deflected sideways by a laser beam?
Is a freely moving neutron deflected sideways when a laser beam is directed at it from the side? It would be great if the question could be considered from the two points of view that the laser beam ...
- 10.6k
-1
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1
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Is this Why a Neutron can Decay Into a Proton, Electron and Electron Antineutrino?
A neutron is udd, then an u-anti-u starts to exist close to the neutron. Then the one d and u change places forming an uud (proton) and anti-ud which decays to an electron and electron-antineutrino. ...
-3
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1
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114
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Spallation neutron sources + wakefield particle accelerator + U-238 for generation of Pu-239 [closed]
I am looking to combine the principles of spallation neutron sources, wakefield particle accelerators, and neutron absorption to enable anybody to create large amounts of plutonium using relatively ...
- 293
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1
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141
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Is it possible to collide two neutrons? [closed]
If it is possible to collide two neutrons, how is it so? What particle accelerator or pre-collision processes are necessary and what results can be expected? If the products of neutron-neutron ...
5
votes
1
answer
987
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Is an electron more stable than a proton/neutron?
Is an electron more stable than a proton/neutron under extreme temperature/pressure conditions, like several 100 millions K?
- 167
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1
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19
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Stacking of magnetic moments in a polarised neutron beam
Neutrons are particles that have a half spin and a magnetic moment. if you polarise a beam of neutrons so that they all align with spin +1/2 will the combined neutron beam have an overall magnetic ...
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4
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1
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Do the free neutrons in a neutron star sometimes decay and immediately re-form?
Is there any way of confirming this, one way or the other? Would it affect any of the star's 'observeables', so to speak?
I know that two similar questions are up on Stack Exchange-physics, and I ...
- 4,509
6
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5
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1k
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Are neutrons and protons stable inside atomic nuclei?
Some people naturally assume that atomic nuclei are made of protons and neutrons. That is, they are basicly clumps of protons and neutrons that each maintain its separate existence, like pieces of ...
- 2,988
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359
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Gravity affects neutrons
A long time ago I asked whether gravity affected subatomic particles. An experimental physicist kindly explained that it's known to affect neutrons. Get a neutron source, and send a beam of neutrons ...
- 2,988
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What is the radius of the neutron?
I am trying to get a straight forward answer to the question of the experimental radius of the neutron. Codata group gives magnetic radius of about 0.84fm, while the negative mean square charge ...
0
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1
answer
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Are there any solids that are not neutron reflectors, nor neutron moderators?
Is there any solids that lets neutron pass through it (without reflecting or moderating them) that is not air?
Thanks in advance :]
EDIT: clarification
2
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How are we sure that the measured proton spin puzzle will be also observed similarly in the neutron thus a neutron spin puzzle?
The EMC experiment in 1988 using muons' deep inelastic scattering, has reported that the contribution of the valence quarks triplet (i.e. up-up-down) in the proton was measured to contribute as little ...
- 4,170
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Why do neutrons begin to be emitted?
If I have a handful of 95% U235 it will be emitting alpha and beta particles and gamma radiation depending on what decay daughters are present. No neutrons will be emitted.
If I pour that handful into ...
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