ISSN:
1434-601X
Keywords:
34.50.B
;
14.20.D
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract Neutrons of energies within a 50 eV interval at 1970 eV have been selected from reactor neutrons by means of resonance scattering on a target of63Cu and subsequently by the 1970 eV resonance of a80Se target. Insertion of stationary filters and the technique of difference measurements with a resonance filter resulted in a high selectivity, which allowed the determination of cross sections for quasi-monoenergetic neutrons for the elements: H, C, O, F, Na, Mg, Al, Si, P, Cl, K, Ca, Sc, Ti, V, Mn, Co, Ni, Cu, Ga, Pb and Bi. The precision cross sections of Pb and H contribute to investigations of fundamental neutron interactions. The measured σ(Pb)=11.198±0.003 b was recently used to deriveα n=(0.8±1)10−3 fm3 for the electric polarizability of the neutron. The neutron-proton cross sectionσ(1 H)=20.13±0.03 b and data at 143 keV, 〈1.3〉 MeV, 〈2.1〉 MeV and from the literature provide a refined set of the scattering parameters for the shape-independent effective-range approximation of the neutron-proton interaction.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01289703
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