Grazing incidence prompt gamma emissions and resonance-enhanced neutron standing waves in a thin film

Huai Zhang; P. D. Gallagher; S. K. Satija; R. M. Lindstrom; R. L. Paul; T. P. Russell; P. Lambooy; E. J. Kramer

doi:10.1103/PhysRevLett.72.3044

Grazing incidence prompt gamma emissions and resonance-enhanced neutron standing waves in a thin film

Huai Zhang, P. D. Gallagher, S. K. Satija, R. M. Lindstrom, R. L. Paul, T. P. Russell, P. Lambooy, and E. J. Kramer

Phys. Rev. Lett. 72, 3044 – Published 9 May 1994

Abstract

We report simultaneous measurements of neutron-capture prompt gamma emissions as well as neutron reflectivity on a polymer film with an embedded Gd layer. Enhanced γ-ray signals and reduced neutron reflectivity were observed when the neutron standing waves were resonantly amplified in the film. Fitting of both the γ-ray and reflectivity data is of significant aid in uniquely characterizing the depth profile of the polymer film as well as locating the Gd layer.

Received 7 February 1994

DOI:https://doi.org/10.1103/PhysRevLett.72.3044

Authors & Affiliations

Huai Zhang, P. D. Gallagher, S. K. Satija, R. M. Lindstrom, R. L. Paul, T. P. Russell, P. Lambooy, and E. J. Kramer

Reactor Radiation Division, National Institute of Science and Technology, Gaithersburg, Maryland 20899
Department of Material and Nuclear Engineering, University of Maryland, College Park, Maryland 20742
Inorganic Analytical Research Division, National Institute of Science and Technology, Gaithersburg, Maryland 20899
IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120
Department of Materials Science and Engineering and the Materials Science Center, Cornell University, Ithaca, New York 14853