SNS-HFIR User Group Executive Committee Members

Contact the SHUG Executive Committee:

Chair: Martin Mourigal

Assistant Professor of Physics
Georgia Institute of Technology
Term expires December 2021


Research interests:  The magnetic dynamics of quantum antiferromagnets and spin-liquids. In his laboratory at Georgia Tech, students and postdocs engage in a broad portfolio of quantum materials techniques, including sample synthesis and characterization, inelastic neutron scattering, and theoretical modelling.



Past Chair: Olivier Delaire

Associate Professor of Mechanical Engineering and Materials Science and Physics
Duke University
Term expires December 2021


Research interests: Lattice dynamics in solid materials, in particular the effects of phonon anharmonicity, electron-phonon coupling and spin-phonon coupling. His group makes extensive use of both neutron and x-ray scattering, coupled with first-principles computer simulations to rationalize experimental data and predict material responses.


Adrian BruggerAdrian Brügger 

Director, Robert A. W. Carleton Strength of Materials Laboratory
Associate Research Scientist & Adjunct Assistant Professor
Civil Engineering and Engineering Mechanics, Columbia University
Term expires December 2022


Research interests: Neutron scattering measurements in infrastructure components, packing mechanics, residual stress and contact force mapping of multibody systems, characterization of materials under high temperature (fire), eigenstrain analysis of complex geometries, and curing dynamics of cementitious materials and composites.



Secretary: Adam Aczel

Staff Scientist
Oak Ridge National Laboratory
High Flux Isotope Reactor
Term expires December 2020


Research interests: Neutron scattering and muon spin relaxation studies of quantum materials, with a current emphasis on frustrated magnetism, skyrmions, and heavy transition metal magnets.



Allyson Fry

Allyson Fry-Petit

Professor of Chemistry
California State University Fullerton, Fullerton, CA
Term expires December 2020


Research interests are in solid state inorganic chemistry, focused on the rational design of new materials through the use of data mining, synthesis, structural characterization and spectroscopy. Her lab is also working on the analysis of dynamic pair distribution function data from inelastic neutron scattering.



Daniel ShoemakerVice Chair: Daniel Shoemaker

Assistant Professor of Materials Science and Engineering
University of Illinois
Term expires December 2022


Research interests: The Shoemaker Group focuses on discovery and characterization of new electronic and magnetic materials. Neutron-related research includes structure solution, magnetic dynamics, in situ measurements of synthesis and phase transitions, and local structure analysis.


Jarek Majewski

Program Director
National Science Foundation
Term expires December 2021


Research interests: Jarek is currently a program director at the Molecular Biophysics Cluster in the Division of Molecular and Cellular Biology at the National Science Foundation. He is on a leave of absence from Los Alamos National Laboratory where, over the past 20 years, he has built a successful x-ray and neutron scattering program to address interfacial structures and properties of materials.



Eugene Mamontov

Instrument Scientist
Oak Ridge National Laboratory
Spallation Neutron Source
Term expires December 2020


Research interests: Microscopic dynamics in broadly defined soft matter, from simple and complex fluids to cells and organisms.




Dvora Perahia

Dvora Perahia

Professor of Chemistry and Physics
Clemson University
Term expires December 2020


Research interests: Complex fluids and polymers, elastic and quasi-elastic neutron scattering and large-scale MD simulations





Geneva LauritaGeneva Laurita

Assistant Professor of Chemistry and Biochemistry
Bates College
Term expires December 2022


Research interests: Understanding the structure—property relationships of inorganic solid state materials, particularly those of relevance to energy and electronics-related technology. Research focuses on solid state synthesis and characterization techniques with an emphasis on neutron and synchrotron X-ray total scattering to gain a detailed understanding of the structure of a material. 


Danielle YahneDanielle Yahne

PhD Candidate
Department of Physics
Colorado State University
Term expires December 2022


Research interest: Understanding emergent phenomena in quantum materials with a current emphasis on frustrated magnetism in rare-earth based materials. Using neutron scattering to probe magnetic structures and spin dynamics on very small samples.



RatliffWilliam Ratcliff

NIST Center for Neutron Research (NCNR)
Term Expires December 2021