Neutron reflecting supermirror structure

Details Neutron reflecting supermirror structure Neutron reflecting supermirror structure

1990-07-31

1992-01-21

Wasil, Daniel D.

Induced nuclear reactions: processes, systems, and elements

Moderator or reflector component structure for a fission...

376906, 428635, 428660, G21C 1106

Patent

active

050826212

ABSTRACT:
An improved neutron reflecting supermirror structure comprising a plurality of stacked sets of bilayers of neutron reflecting materials. The improved neutron reflecting supermirror structure is adapted to provide extremely good performance at high incidence angles, i.e. up to four time the critical angle of standard neutron mirror structures. The reflection of neutrons striking the supermirror structure at a high critical angle provides enhanced neutron throughput, and hence more efficient and economical use of neutron sources. One layer of each set of bilayers consist of titanium, and the second layer of each set of bilayers consist of an alloy of nickel with carbon interstitially present in the nickel alloy.

REFERENCES:
patent: 4157277 (1979-06-01), Marmonier et al.
patent: 4725509 (1988-02-01), Ryan
patent: 4743423 (1988-05-01), Turner et al.
patent: 4761346 (1988-08-01), Naik
"Nickel Mirror and Supermirror Neutron Guide Tubes at the Kyoto University Research Reactor", pp. 54-58, (1988).
"Recent Advances with Supermirror Polarisers" by Schrapf, pp. 182-189 (1982).
"The Use of Focusing Supermirror Neutron Guides to Enhance Cold Neutron Fluence Rates", (1988), pp. 181-190.
"Transmission Optical Device to Produce Intense Polarized Neutron Beams" Mook and Hayter, pp. 648-650, Aug. 1988.
"Neutron X-Ray Scattering and TEM Studies of Ni-Ti Multilayers", Keem et al., (1988).

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