Do Neutrons Emit Infrared Radiation at Room Temperature?

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Discussion Overview

The discussion centers on whether neutrons emit infrared radiation at room temperature, exploring the nature of thermal radiation and the properties of neutrons in relation to electromagnetic radiation. The scope includes theoretical considerations and implications of particle physics.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant asserts that all bodies with a temperature emit electromagnetic radiation due to thermal motion, questioning if neutrons would emit infrared radiation at room temperature.
  • Another participant states that neutrons at a finite temperature would emit thermal radiation, referencing neutron stars as examples and noting that their spectra resemble blackbody radiation, while acknowledging complexities in the spectrum.
  • A different viewpoint suggests that neutrons do emit electromagnetic energy and even electrons through beta decay, proposing a simplified view of neutrons as protons combined with electrons, while also mentioning the neutron's magnetic dipole moment as evidence of electromagnetic characteristics.
  • One participant adds that thermal energy emission occurs because the emitter is not in a stable, low-energy state, implying that neutron constituents may emit energy as they transition to lower energy configurations.

Areas of Agreement / Disagreement

Participants express differing views on the nature of neutron emissions and the mechanisms involved, indicating that multiple competing perspectives remain without a consensus.

Contextual Notes

There are unresolved assumptions regarding the coupling of neutral particles to the electromagnetic field and the implications of beta decay in the context of thermal radiation. The discussion does not clarify the specific conditions under which neutrons might emit radiation.

jjschwartz1
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All bodies with a temperature emit electromagnetic radiation also known as thermal radiation or blackbody radiation. If I understand it correctly, the origin of this is the thermal motion (acceleration) of the atoms and their included positive and negative charges leads to EM radiation.

Would a bunch of neutrons at, say, room temperature emit infrared radiation? I would think they would as "all bodies with a positive temperature emit electromagnetic radiation". But I'm at a loss to explain why.
 
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A bunch of neutrons at a finite temperature T would emit thermal radiation. We have even observed such objects: neutron stars. I believe their spectra are roughly blackbody, but of course there are many interesting effects that play into the precise form of the spectrum.

Are you confused because a neutral particle shouldn't couple to the EM field? Remember, though, that the neutron has a nonzero magnetic dipole moment, and it is actually composed of fractionally-charged quarks. So it can couple to the EM field.
 
Not only do neutrons emit electromagnetic energy [thermal energy] they actually emit electrons! That's called beta decay. This suggests 'a neutron is a proton plus an electron combined' which is likely an over simplification that started with Rutherford.

edit: found a brief description here:

http://en.wikipedia.org/wiki/Neutron#Intrinsic_properties

You can also tell a neutron has some EM character [electron like] because it has a magnetic dipole moment.
 
Forgot to say: If anything emits thermal energy, its because the emitter is not in the most stable, low energy state...so it's likely that as the neutron constitutents emit EM energy they settle to a lower energy configuration.
 

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