Change of neutron energy at reflection from and transmission trough a matter layer

Volume 1, Issue 1, October 2016     |     PP. 41-51      |     PDF (277 K)    |     Pub. Date: October 16, 2016
DOI:    462 Downloads     7940 Views  

Author(s)

V.K.Ignatovich, Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Dubna 141980, RF.
M.Utsuro, Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan

Abstract
The experimentally found small heating of the neutrons after transmission through thin foils can be explained by violation of energy conservation because of finite energy width of the neutron wave packet. The part of the wave packet subcritically transmitted through a foil has energy distribution higher than that of the incident one, and the part totally reflected has energy a little bit lower than the incident one. It is proven here with de Broglie’s wave packet function. Increase and decrease of energy is analytically calculated. In average the energy is conserved.

Keywords
de Broglie’s wave packet, coherence length, small heating, law of energy conservation violation

Cite this paper
V.K.Ignatovich, M.Utsuro, Change of neutron energy at reflection from and transmission trough a matter layer , SCIREA Journal of Physics. Volume 1, Issue 1, October 2016 | PP. 41-51.

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