Dr Christine Rehm
Staff Profile
Role at ANSTO
Dr Christine Rehm works on the design, construction and commissioning of an ultra-small angle neutron scattering instrument at the OPAL reactor. Christine's fields of expertise include neutron science (polarized reflectometry and magnetic thin films) as well as neutron instrumentation (neutron optics, instrument simulation, neutron guides).
Christine received her PhD in 1999 from the Technical University of Berlin, Germany, as research scientist of Hahn-Meitner Institute, where she investigated hydrogen-induced changes of structural and magnetic properties of metallic thin films. After her PhD, she joined the U.S. Spallation Neutron Source (SNS) project in Oak Ridge.
She worked on neutron instrumentation design and optimization by means of Monte Carlo simulation calculations for a variety of instruments: a neutron macromolecular crystallography diffractometer, a time-of-flight ultra-small-angle neutron scattering instrument, and a neutron optics test station. In addition, she performed a comprehensive analysis of neutron supermirrors studying irradiation effects, theoretical performance and influence on instrument performance.
Subsequently, her skills and expertise formed the base of her company American Scientific Instrumentation where she managed various neutron optics related projects involving guides and optical components, beam lines, instruments, etc. and distributed neutron optical components manufactured by SwissNeutronics.
Qualifications & Achievements
- Scientific consultant at American Scientific Instrumentation (2004-2007)
- Post-doctoral position at the U.S. Spallation Neutron Source (SNS)
(2000-2004) - PhD in physics from Technical University of Berlin / Hahn-Meitner Institute Berlin (1999)
- Author/co-author of 29 peer-reviewed scientific journals, presenter of 25 scientific talks at international conferences and workshops
Publications
A.J. Schultz, P. Thiyagarajan, J.P. Hodges, Ch. Rehm, D.A.A. Myles, P. Langan and A.D. Mesecar, "Design of the next generation neutron macromolecular diffractometer at the Spallation Neutron Source", Journal of Applied Crystallography 38 (2005) 964-974
J.F. Ankner and Ch. Rehm, "Time-dependent measurements at the SNS liquids reflectometer", Physica B 336 (2003) 68-74
J.M. Carpenter, M.M. Agamalian, K.C. Littrell, P. Thiyagarajan and Ch. Rehm, "Time-of-flight implementation of an ultra-small-angle neutron scattering instrument", Journal of Applied Crystallography 36 (2003) 763-768
J.F. Ankner, Ch. Rehm, E.D. Blakeman and R.L. Kellogg, "Optical design of the SNS liquids reflectometer", in Advances in Neutron Scattering Instrumentation, Ian S. Anderson, Bruno Guerard, Editors, Proceedings SPIE Vol. 4785, 53-63 (2002)
M. Agamalian, J.M. Carpenter, K.C. Littrell, P. Thiyagarajan and Ch. Rehm, "Time-of-flight ultra-small-angle neutron scattering instrument for the SNS", in Advances in Neutron Scattering Instrumentation, Ian S. Anderson, Bruno Guerard, Editors, Proceedings SPIE Vol. 4785, 134-142 (2002)
Ch. Rehm, H. Maletta, M. Fieber-Erdmann, E. Holub-Krappe and F. Klose, "Anomalous layer expansion in thin niobium films during hydrogen absorption", Physical Review B 65 (2002) 113404-1 - 113404-4
W.-T. Lee, X.-L. Wang, J. L. Robertson, F. Klose and Ch. Rehm, "IDEAS ? A Monte Carlo simulation package for neutron scattering instrumentation", Applied Physics A. Material Science and Processing 74 [Suppl.], S1502-S1504
Ch. Rehm and M. Agamalian, "Flux gain for next-generation neutron-scattering instruments resulting from improved supermirror performance", in Neutron Optics, James L. Wood, Ian S. Anderson, Editors, Proceedings of SPIE Vol. 4509, 56-65 (2001)
M. Agamalian, E. Iolin, H. Kaiser, Ch. Rehm and S.A. Werner, "Dynamical neutron-scattering measurements of residual stress in a Si crystal coated with a thin film", Physical Review B 64 (2001) 161402(R)
Ch. Rehm, H. Fritzsche, H. Maletta and F. Klose, "Hydrogen concentration and its relation to interplanar spacing and layer thickness of 1000 ? Nb(110) films during in-situ hydrogen charging experiments", Physical Review B 59 (1999) 3142-3152
F. Klose, Ch. Rehm, D. Nagengast, H. Maletta and A. Weidinger, "Continuous and reversible change of the magnetic coupling in an Fe/Nb multilayer induced by hydrogen charging", Physical Review Letters 78 (1997) 1150-1153
Ch. Rehm, D. Nagengast, F. Klose, H. Maletta and A. Weidinger, "Magnetic coupling in Fe/Nb multilayers: A neutron reflectivity study", Europhysics Letters 38 (1997) 61-66