1. Improved measurement of the neutron absorption cross section for very low velocities
- Author
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T. Zechlau, Helmut Rauch, P. Geltenbort, J. Schroffenegger, T. Lauer, Peter Fierlinger, and A. Hollering
- Subjects
Physics ,Nuclear and High Energy Physics ,Protons and neutrons ,Absorption cross section ,01 natural sciences ,lcsh:QC1-999 ,ddc ,Neutron transport: diffusion and moderation ,010305 fluids & plasmas ,Nuclear physics ,Neutron capture ,Cross section (physics) ,0103 physical sciences ,Neutron ,010306 general physics ,Absorption (electromagnetic radiation) ,lcsh:Physics - Abstract
The absorption cross section of natural Gd and isotopic enriched 157 Gd for ultra-cold neutrons (UCN) as a function of the velocity has been measured within a time-of-flight-experiment. Particular attention is paid to small velocities in the region of a few m/s. This is intended to determine the validity of the 1 / v -law governing absorption cross sections in this region and the resulting divergence at v = 0 . The experiment does not show any significant violation of 1 / v for v > 3 m / s .
- Published
- 2016
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