Neutron intensity gains for converging guide systems
作者： D.F.R. Mildner
DOI: 10.1016/0168-9002(91)90003-9
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摘要: Abstract Neutron focusing, or increased current density at the expense of beam divergence, can be obtained by addition a converging guide end straight guide. The greatest gains are achieved when critical angle coating is much greater than that gain limited, however, increase in neutron trajectory makes with axis upon successive reflections. Acceptance diagrams used for deriving analytical expressions describing transmission properties such systems. results reduced to nine basic formulae depending on geometric configuration and coatings guides. A graphical method presented determining appropriate expression particular relative surface coatings, as function wavelength. agreement earlier measurements straight-converging system.
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H. Maier-Leibnitz, T. Springer, The use of neutron optical devices on beam-hole experiments on beam-hole experiments Journal of Nuclear Energy. Parts A\/b. Reactor Science and Technology. ,vol. 17, pp. 217- 225 ,(1963) , 10.1016/0368-3230(63)90022-3
Charles F. Majkrzak, Interference coatings for neutrons. Applied Optics. ,vol. 23, pp. 3524- 3528 ,(1984) , 10.1364/AO.23.003524
M. Rossbach, O. Schärpf, W. Kaiser, W. Graf, A. Schirmer, W. Faber, J. Duppich, R. Zeisler, The use of focusing supermirror neutron guides to enhance cold neutron fluence rates Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms. ,vol. 35, pp. 181- 190 ,(1988) , 10.1016/0168-583X(88)90491-0
J.M. Carpenter, D.F.R. Mildner, Neutron guide tube gain for a remote finite source Nuclear Instruments and Methods in Physics Research. ,vol. 196, pp. 341- 348 ,(1982) , 10.1016/0029-554X(82)90097-0
D.F.R. Mildner, Neutron gain for converging guide tubes Nuclear Instruments and Methods in Physics Research. ,vol. 200, pp. 167- 173 ,(1982) , 10.1016/0167-5087(82)90427-6
J.R.D. Copley, An analytical method to characterize the performance of multiple section straight-sided neutron guide systems Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment. ,vol. 287, pp. 363- 373 ,(1990) , 10.1016/0168-9002(90)91549-Q
WG Williams, CJ Carlile, MW Johnson, Neutron guides on pulsed sources Rutherford Appleton Laboratory Technical Reports. ,(1979)