Profile picture for user nga
First Name
Andrew
Last Name
Ng
Position
Professor Emeritus
Email
nga@phas.ubc.ca
Research Groups
Atomic, Molecular and Optical Physics
Students Wanted
N/A
Additional Links
Research Website
Additional Information

Professor Ng received his M.Sc. and Ph. D. degrees from the University of Western Ontario.  In 1980, he joined the then Department of Physics at UBC to build a research program in laser-matter interaction at high intensities.  His interest was rapidly directed towards matter with temperatures of 10,000-100,000 K and liquid to above-solid densities that appeared in the transition of solid to plasma.  Little was known about this unique state of matter as it could not be treated as a conventional solid or plasma.  Yet, the behaviour of such a state played a central role in the critical, initial compression of a fuel capsule in inertial confinement fusion.   To stimulate advance in this new frontier, he coined the name Warm Dense Matter (WDM) in 1999 and started the International Workshop on WDM in 2000.  The meeting has since been held in rotation between North America, Europe and Asia.  In January 2003, Ng joined the Lawrence Livermore National Laboratory, U.S.A. as the founding Scientific Director of the emerging Jupiter Laser Facility (JLF).  With the successful implementation of JLF and its Scientific User Program, Ng returned to UBC in September 2008 to initiate international collaborative research as Professor Emeritus.  

Professor Ng is a Fellow of the American Physical Society (APS) and the Institute of Electrical & Electronic Engineers (IEEE).  He is also the recipient of the UBC Izaak Walton Killam Research Prize, the Lawrence Livermore National Laboratory Science & Technology Award, the IEEE Nuclear & Plasma Sciences Society (NPSS) Merit Award, and the IEEE NPSS Plasma Science and Applications award.

Research Area
Atomic, Molecular & Optical Physics
Research Field
Plasma Physics
Selected Publications
  1. A.A. Offenberger and A. Ng, "Ion Turbulence in a CO2 Laser-Target Interaction Experiment", Phys. Rev. Lett. 40, 873 (1978).
  2. A. Ng, L. Pitt, D. Salzmann, and A.A. Offenberger, "Saturation of Stimulate Brillouin Backscatter in CO2 Laser-Plasma Interaction Experiment", Phys. Rev. Lett. 42, 307 (1979).
  3. A. Ng, D. Salzmann, and A.A. Offenberger, "Filamentation of CO2 Laser Radiation in an Underdense Hydrogen Plasma", Phys. Rev. Lett. 43, 1502 (1979).
  4. A.A. Offenberger and A. Ng, "Anomalous Absorption in CO2 Laser-Target Interactions", Phys. Rev. Lett. 45, 1189 (1980).
  5. Y.S. Al-Shiraida, A.A. Offenberger, W. Rozmus, and A. Ng, "Enhanced Ion Fluctuations Generated in a CO2 Laser-Heated Plasma", Phys. Rev. Lett. 52, 283 (1984).
  6. A. Ng, D. Parfeniuk, and L. DaSilva, "Hugoniot Measurements for Laser-Generated Shock Waves in Aluminum", Phys. Rev. Lett. 54, 2604 (1985).
  7. A. Ng, D. Parfeniuk, P. Celliers, L. DaSilva, R.M. More, and Y.T. Lee, "Electrical Conductivity of a Dense Plasma", Phys. Rev. Lett. 57, 1595 (1986).
  8. A. Ng, P. Celliers, and D. Parfeniuk, "Dynamics of Laser-Driven Shock Waves in Fused Silica", Phys. Rev. Lett. 58, 214 (1987).
  9. L. DaSilva, A. Ng, B.K. Godwal, G. Chiu, F. Cottet, M.C. Richardson, P.A. Jaanimagi, and Y.T. Lee, "Shock-induced Shifts in the Aluminum K Photoabsorption Edge", Phys. Rev. Lett. 62, 1623 (1989).
  10. P. Celliers, A. Ng, G. Xu, and A. Forsman, "Thermal Equilibration in a Shock Wave", Phys. Rev. Lett. 68, 2305 (1992).
  11. A. Ng, P. Celliers, A. Forsman, R.M. More, Y.T. Lee, F. Perrot, M.W.C. Dharma-wardana, and G.A. Rinker, “Reflectivity of Intense Femtosecond Laser Pulses from a Simple Metal”, Phys. Rev. Lett. 72, 3351 (1994).
  12. L.B. DaSilva, P. Celliers, G.W. Collins, K.S. Budil, N.C. Holmes, T.W. Barbee Jr., B.A. Hammel, J.D. Kilkenny, R.J. Wallace. and R. Cauble (LLNL); A, Ng and G. Chiu (UBC), “Absolute Equation of State Measurements of Shocked Liquid Deuterium up to 200 GPa”, Phys. Rev. Lett. 78, 483 (1997)
  13. Th. Lower, V.N. Kondrashov, M. Basko, A. Kendl, J. Meyer-ter-vhen, R. Sigel (MPQ); A. Ng (UBC): “Reflectivity and optical brightness of laser-induced shocks in silicon”, Phys. Rev. Lett. 80, 4000 (1998).
  14. G.W. Collins, L.B. DaSilva, P. Celliers, D.M. Gold, M.E. Foord, R.J. Wallace, A. Ng, S.V. Weber, and R. Cauble, “Measurements of the equation of state of deuterium at the fluid insulator-metal transition”, Science 281 (1998).
  15. A. Ng, A. Forsman, and G. Chiu, “Electron Thermal Conduction waves in a two-temperature, dense plasma”, Phys. Rev. Lett. 81, 2914 (1998).
  16. G.W. Collins, P.M. Celliers, L.B. DaSilva, R. Cauble, D.M. Gold, M.E. Foord, N.C. Holmes, B.A. Hammel, R.J. Wallace (LLNL), and A. Ng (UBC), “Temperature measurements of shock compressed liquid deuterium up to 230 GPa”, Phys. Rev. Lett. 87, 165504 (2001).
  17.  A. Ng and T. Ao, “Nonequilibrium and non-steady-state evolution of a shock state”, Phys. Rev. Lett. 91, 035002 (2003).
  18.  K. Widmann, T. Ao, M.E. Foord, D.F. Price, A.D. Ellis, P.T. Springer and A. Ng, “Single-state measurement of electrical conductivity of warm dense gold”. Phys. Rev. Lett. 92, 125002 (2004).
  19.  T. Ao, Y. Ping, K. Widmann, D.F. Price, E. Lee, H. Tam, P.T. Springer and A. Ng, “Optical properties in non-equilibrium phase transitions”, Phys. Rev. Lett. 96, 055001 (2006).
  20.  Y. Ping, D. Hanson, I. Koslow, T. Ogitsu, D. Prendergast, E. Schwegler, G. Collins and A. Ng, “Broadband dielectric function of non-equilibrium warm dense gold”, Phys. Rev. Lett. 96, 255003 (2006).
  21. A.L. Kritcher, P. Neumayer, J. Castor, T. Doppner, R.W. Falcone, O.L. Landen, H.J. Lee, R.W. Lee, E.C. Morse, A. Ng, S. Pollaine, D. Price, and S.H. Glenzer, “Ultra-fast X-ray Thomson scattering measurements of insulator-metal transition in shock-compressed matter”, Science 322, 69 (2008).
  22. Z. Chen, V. Sametoglu, T. Ao, Y.Y. Tsui, and A. Ng, “Flux-limited nonequilibrium electron energy transport in warm dense gold” Phys. Rev. Lett. 108, 165001 (2012).
  23. Z. Chen, B. Holst, S.E. Kirkwood, V. Sametoglu, M. Reid, Y.Y. Tsui, V. Recoules, and A. Ng, “Evolution of AC conductivity in nonequilibrium warm dense gold”, Phys. Rev. Lett. 110, 35001 (2013).
  24. Z. Chen, M. Mo, L. Soulard, V. Recoules, P. Hering, Y.Y.Tsui, S. H. Glenzer, and A. Ng, “Interatomic potential in the non-equilibrium warm dense matter regime”, Phys. Rev. Lett. (2018).
  25. M.Z. Mo, Z. Chen, R.K. Li, M. Dunning, B.B.L. Witte, J.K. Baldwin, L.B. Fletcher, J.B. Kim, A. Ng, R. Redmer, A.H. Reid, P. Shekhar, X.Z. Shen, M. Shen, K. Sokolowski-Tinten, Y.Y. Tsui, Y.Q. Wang, W. Zheng, X.J. Wang, and S.H. Glenzer, “Heterogeneous to homogenous melting transition visualized with ultrafast electron diffraction”, Science 360, 1451 (2018).
  26. Z. Chen, Y.Y. Tsui, M.Z. Mo, R. Fedosejevs, T. Ozaki, V. Recoules, P.A. Sterne, and A. Ng, “Electron Kinetics Induced by Ultrafast Photoexcitation of Warm Dense Matter in a 30-nm-Thick Foil”, Phys. Rev. Lett. 127, 097403 (2021).