Actions for Inverse problem in neutron reflection [electronic resource].

Email RIS file
Bookmark
Report an Issue

Inverse problem in neutron reflection [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 1991.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
Pages: (23 pages) : digital, PDF file
Additional Creators
Argonne National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
Access Online

Availability

I Want It
I Want It

Finding items...

Restrictions on Access
Free-to-read Unrestricted online access
Summary
Reflectance and transmittance of neutrons from a thin film deposited on a bulk substrate are derived from solution of Schroedinger wave equation in the material medium with an optical potential. A closed-form solution for the complex reflectance and transmittance is obtained in an approximation where the curvature of the scattering length density profile in the film is small. This closed-form solution reduces to all the known approximations in various limiting cases and is shown to be more accurate than the existing approximations. The closed-form solution of the reflectance is used as a starting point for an inversion algorithm whereby the reflectance data are inverted by a matrix iteration scheme to obtain the scattering length density distribution in the film. A preliminary test showed that the inverted profile is accurate for the linear scattering length density distribution but falls short in the case of an exponential distribution. 30 refs., 7 figs., 1 tab.
Report Numbers
E 1.99:anl/cp-73387
E 1.99: conf-9104271--1
conf-9104271--1
anl/cp-73387
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
05/01/1991.
"anl/cp-73387"
" conf-9104271--1"
"DE91014457"
North Atlantic Treaty Organization (NATO) advanced research workshop on inverse problems in scattering and imaging, North Falmouth, MA (United States), 14-19 Apr 1991.
Felcher, G.P.; Chen, Sow-Hsin . Dept. of Nuclear Engine; Zhou, Xiao-Lin.
Funding Information
W-31109-ENG-38
View MARC record | catkey: 14459117