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Moderation of Fast moving thermal neutron

by EinsteinII
Tags: moderation, moving, neutron, thermal
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mfb
#19
Oct2-13, 10:43 AM
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Quote Quote by snorkack View Post
An electron, repulsive potential about 1 eV, displaces 500 He atoms from a bubble it forms when forced in.
Where does that number come from?

What effect does a slow neutron, repulsive potential about 10 neV, have on the surrounding He atoms if forced into the liquid?
The whole point of the effective potential are coherent effects in the medium - if the neutron would be localized somewhere, it would not feel an effective potential.
snorkack
#20
Oct2-13, 01:34 PM
P: 386
Quote Quote by mfb View Post
Where does that number come from?
Here:
http://www.brown.edu/Research/electr...ctron%2004.pdf
Quote Quote by mfb View Post
The whole point of the effective potential are coherent effects in the medium - if the neutron would be localized somewhere, it would not feel an effective potential.
Would the repulsion of the nearby helium nuclei localize a neutron, as it does with an electron?
mfb
#21
Oct2-13, 02:39 PM
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P: 11,869
A very interesting concept for a neutrino detector, thanks for the link.

Is there a significant repulsion at all? The nucleus has no bound states for the neutron, that is not the same as a significant repulsion.


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