Michael J. Morgan

Professor of Physics
BSc(Hons) Monash University, 1975
PhD Theoretical Physics, Monash University, 1982
FAIP
Phone +61 3 9905 3645
Fax +61 3 9905 3637

Email: Michael.J.Morgan@monash.edu

Spin texture.

A Bose-Einstein condensate of atoms prepared as a "texture" that contains a structure more complicated than a simple vortex (three shown, where arrows go to zero length). The condensate is a mixture of atoms in two different states, and the relative amounts vary with location, as shown by the arrows (pointing up means all in one state; pointing down means all in the other).
G. Ruben, M. J. Morgan and D. M. Paganin, Phys. Rev. Lett. 105, 220402, (2010).

Research interests

Professor Morgan's current research interests encompass multifarious aspects of theoretical physics, including: topological defects, particle cosmology, geometric phases in physics, inverse problems, X-ray phase contrast imaging and nanodynamics.

Teaching interests

• Electrodynamics
• Scattering Theory
• Quantum Mechanics and Quantum Field Theory
• Cosmology
• Mathematical and Computational Physics
• Image Processing and Visualisation

Selected publications

Petersen, T. C., Weyland, M., Paganin, D. M., Simula, T. P., Eastwood, S. A. and Morgan, M. J., "Electron Vortex Production and Control using Aberration Induced Diffraction Catastrophes", Phys. Rev. Lett., 110, 033901 (2013).

Eastwood, S. A., Bishop, A. I., Petersen, T. C., Paganin, D. M. and Morgan, M. J., "Phase retrieval using an Optical Vortex Lattice produced with a Three-beam Interferometer", Optics Express, 20, 13947 (2012).

Yu, Rotha, Morgan, M. J. and Paganin, D. M. "Lorentz-electron Vector Tomography using Two and Three Orthogonal Tilt Series", Phys. Rev. A. 83, 023813 (2011).

Meier, E., Biedron, S. G., LeBlanc, G., Morgan, M. J., "Development of a Novel Optimization Tool for Electron Linacs Inspired by Artificial Intelligence Techniques in Video Games", Nucl. Instrum. and Meth. A 632, 1-6 (2011).

Ruben, G., Morgan, M. J. and Paganin, D. M., "Texture Control in a Pseudospin Bose-Einstein Condensate", Phys. Rev. Lett., 105, 220402 (2010).

Meier, E., Biedron, S. G., LeBlanc, G., Morgan, M. J. and Wu, J., "Electron Beam Energy and Bunch Length Feed Forward Control Studies using an Artificial Neural Network at the Linac Coherent Light Source", Nucl. Instrum. and Meth. A 610, 629-635 (2009).

Meier, E., Biedron, S. G., LeBlanc, G., Morgan, M. J. and Wu, J., "Development of a Combined Feed Forward- Feedback System for an Electron Linac", Nucl. Instrum. and Meth. A 609, 79-88 (2009).

Tang, Wen Xin, Jesson, D. E., Pavlov, K. M., Morgan, M. J. and Usher, B. F., "Ga Droplet Morphology on GaAs(001) Studied using Lloyd's Mirror Photo-emission Electron Microscopy", J. Phys.: Condensed Matter 21 (2009).

Kitchen, M. J., Lewis, R. A., Morgan, M. J., Wallace, M. J., Siew, M. L., Siu, K. K. W., Habib, A., Fouras, A., Yagi. N., Uesugi, K. and Hooper, S. B., "Dynamical Measures of Regional Lung Air Volume using Phase Contrast X-ray Imaging", Phys. Med. Biol. 53, 6065-6077 (2008).

Ruben, G, Paganin, D. M. and Morgan, M. J., "Vortex-lattice Formation and Melting in a Non-rotating Bose-Einstein Condensate", Phys. Rev. A 78, 013631 (2008).

Yu, Rotha P., Paganin, D. M. and Morgan, M. J., "Inferring Generalized Time-Dependent Complex Ginzburg-Landau Equations from Modulus and Gauge-field Information", Phys. Rev. B 77, 134512, (2008).

Jesson, D. E., Pavlov, K. M., Morgan, M. J. and Usher, B. F., "Imaging Surface Topography using Lloyd's Mirror in Photo-emission Electron Microscopy", Phys. Rev. Lett. 99, 016103 (2007).

Hooper, S. B., Kitchen, M. J., Wallace, M. J., Yagi. N., Uesugi, K., Morgan, M. J., Hall, C. J., Siu, K., Williams, I. M., Siew, M., Irvine, S. C., Pavlov, K. M., and Lewis, R. A., "Imaging Lung Aeration and Lung Liquid Clearance at Birth" FASEB J, 21, 3329-3337 (2007).

Kennedy, S. M., Jesson, D. E., Morgan, M. J., Smith, A. E. and Barker, P., "Phase Sensitivity of Slow Electrons to Interactions with Weak Potentials", Phys. Rev. A 74, 0044701 (2006).

Vine, D. J., Jesson, D. E., Morgan, M. J., Shchukin, V. A. and Bimberg, D., "Shape Transitions of Metastable Surface Nanostructures", Phys. Rev. B 72, 241304 (Rapid Commun.) (2005).

Yu, Rotha P., Paganin, D. M. and Morgan, M. J., "Inferring the Time-Dependent Complex Ginzburg-Landau Equation from Modulus Data", Phys. Rev. E 72, 056711 (2005).

Lewis, R. A., Yagi, N., Kitchen, M. J., Morgan, M. J., Paganin, D. M., Siu, K. K. W., Pav;ov, K. M., Williams, I., Uesugi, K., Wallace, M. J., Hall, C. J., Whitley, J. and Hooper, S. B., "Dynamic Imaging of the Lungs using X-ray Phase Contrast", Phys. Med. Biol. 50, 5031-5040 (2005).

Lade, S. J., Paganin, D. and Morgan, M. J., "Electron Tomography of Electromagnetic Fields, Potentials and Sources", Optics Commun. 253, 392-400 (2005).

Lade, S. J., Paganin, D. and Morgan, M. J., "3-D Vector Tomography of Doppler-transformed Fields by Filtered-backprojection", Optics Commun. 253, 382-391 (2005).

Pavlov, K. M., Gureyev, T. E., Paganin, D. M., Nesterets, Ya. I., Kitchen, M. J., Siu, K. K-W., Gillam, J., Uesugi, K., Yagi, N., Morgan, M.J. and Lewis, R. A., "Unification of Analyser-based and Propagation-based X-ray Phase-contrast Imaging", Nucl. Instrum. and Meth. A 548, 163-168 (2005).

Yu, Rotha P., Paganin, D. M. and Morgan, M. J., "Inferring Non-linear Parabolic Field Equations from Modulus Data", Phys. Lett. A 341, 156 (2005).

Pavlov, K. M., Gureyev, T. E., Paganin, D. M., Nesterets, Ya. I., Morgan, M.J. and Lewis, R. A., "Linear Systems with Slowly Varying Transfer Functions and their Application to X-ray Phase Contrast Imaging", J. Phys. D: Applied Physics, 37, 2746-2750 (2004).

Mudie, S. T., Pavlov, K. M., Morgan, M. J., Hester, J. R., Tabuchi, M. and Takeda, Y., "Collection of Reciprocal Space Maps using Imaging Plates at the Australian National Beamline Facility at the Photon Factory", J. Synch. Rad. 11, 406-413 (2004).

Tan, Yaw-Ren E., Paganin, D. M., Yu, Rotha P. and Morgan, M. J., "Wavefunction Reconstruction of Complex Fields Obeying Non-linear Parabolic Equations", Phys. Rev. E 68, 066602 (2003).

Kirby, B. J., Davis, J. R., Grant, J. A. and Morgan, M. J., "Extracting Material Parameters from X-Ray Attenuation: A CT feasibility study using kilovoltage synchrotron X-rays incident upon low atomic number absorbers", Phys. Med. Biol. 48, 3389-3409 (2003).

Mudie, S., Pavlov, K., Morgan, M., Tabuchi, M., Takeda, Y. and Hester, J., "High-Resolution X-Ray Diffractometry Investigation of Interface Layers in GaN/AlN Structures Grown on Sapphire Substrates", Surf. Rev. Lett. 10, 513-517 (2002).

Yu, Rotha, P. and Morgan, M. J., "Vortices in a Rotating Dark Matter Condensate", Class. Quantum Grav. 19, L157-L166 (2002).

Thatcher, M. J. and Morgan, M. J., "Birefringent Electroweak Textures", Int. J. Mod. Phys A. 17, 1953-1964 (2002).

Yu, Rotha, P., Adam, N., Thatcher, M. J. and Morgan, M. J., "Numerical Study of the Stability of U(1)XU(1)XZ₂ Dirichlet Defects." Class. Quantum. Grav. 18, L163-L169 (2001).

Pavlov, K. M., Kewish, C. M., Davis, J. R. and Morgan, M. J., "A Variant on the Geometrical Optics Approximation in Diffraction Enhanced Tomography." J. Phys. D: Appl. Phys. 34, A168 – A172 (2001).

Kewish, C. M., Davis, J. R., Nikulin, A. Yu, Benci, N., Pavlov, K. M., Morgan, M. J. and Hester, J. R., "Implementation of an Analyser Crystal Method for X-ray Diffraction Tomography." J. Phys. D: Appl. Phys. 34, 1059-1064 (2001).

Pavlov, K. M., Kewish, C. M., Davis, J. R. and Morgan, M. J., "A Simple Method for Estimating Linear Attenuation Coefficients from X-ray Diffraction Tomography Data." Rev. Sci. Instrum. 72, 1918-1920 (2001).

Pavlov, K. M., Kewish, C. M., Davis, J. R. and Morgan, M. J., "A New Theoretical Approach to X-ray Diffraction Tomography", J. Phys. D: Appl. Phys. 33, 1596-1605 (2000).

Morgan, M. J., Osborne, C. F. and Tirkel, A. Z., "Geometric Phase of a Twisted Waveguide", Sing. J. Phys. 16, 71-77 (2000).

Thatcher, M. J. and Morgan, M. J., "Frame Dragging in the Spacetime of a Superconducting Cosmic String", Phys. Rev. D 62, 103514 (2000).