John Curry

Contact Information Atomic Physics Division 100 Bureau Dr., Stop 8422 Gaithersburg, MD 20899-8422 phone: 301-975-2817 fax: 301-975-3038 Curriculum Vitae National Institute of Standards and Technology, 2001-Present University of Wisconsin, Research Scientist, 1998-2001 University of Wisconsin, Research Associate, 1995-1998 University of Maryland, Ph.D. Electrical Engineering, 1995 Thesis Title: Measurement of Fokker-Planck Transport in a Gas Discharge Using Non-Linear Laser-Induced Fluorescence University of Maryland, M.S. Electrical Engineering, 1989 Johns Hopkins University, B.S. Electrical Engineering, 1987

Research Interests

I am interested in developing and using atomic spectroscopic methods to study plasma physics. An example is the use of x-ray induced fluorescence to understand the radiative, chemical, and physical properties of high-intensity plasma arcs. High-energy synchrotron radiation at the Advanced Photon Source is used to probe the inner atomic shell of various species in the arc. Using this technique, we are able to see the distribution of each chemical element regardless of its distribution across various atomic and molecular species. In turn, this allows us to examine and understand the chemical equilibrium and deviations from thermodynamic equilibrium. I am also interested in the acquisition and compilation of basic atomic data. I am currently working on a comprehensive compilation of Ba energy levels, wavelengths, and transition probabilities for all stages of ionization.

Recent Publications

J.J. Curry, C.J. Sansonetti, and J. Wang, "Temperature Profiles and Thermal Losses in 150 W High-Intensity Discharge Lamps," J. Phys. D. Appl. Phys. 38 (in press 2005).

J.J. Curry and C.J. Sansonetti, "X-Ray Absorption Imaging of High-Pressure Lighting Plasmas," IEEE. Trans. Plasma Sci. 33, 514 (2005).

J.J. Curry, "Compilation of Wavelengths, Energy Levels, and Transition Probabilities for Ba I and Ba II," J. Phys. Chem. Ref. Data 33, 725 (2004).

J.J. Curry, H.G. Adler, A. MacPhee, S. Narayanan, and J. Wang, "X-Ray Absorption Imaging of Hg Vapor in a Ceramic Metal-Halide Lamp Using Synchrotron Radiation," Plasma Sources Sci. Tech. 13, 403(2004).

G.G. Lister, J.J. Curry, J.J., and J.E. Lawler, "Power balance in highly loaded fluorescent lamps," J. Phys. D. Appl. Phys. 37, 3099-3106 (2004).

J.J. Curry, H.G. Adler, W.K. Lee, and S.D. Shastri, "Direct Observation of De-Mixing in a Ceramic Metal-Halide Arc Lamp," J. Phys. D 36, 1529 (2003).

J.J. Curry, H.G. Adler, W.K. Lee, and S.D. Shastri, "X-Ray Induced Fluorescence Measurement of Density Distributions in a Metal-Halide Lighting Arc," J. Appl. Phys. 93, 2359 (2003).

J. Laski, G.G. Lister, F. Palmer, P.E. Moskowitz, and J.J. Curry, "Feasibility study of a low-pressure barium discharge lamp," In press J. Appl. Phy. 91, 1772 (2002).

J.J. Curry, G.G. Lister, and J.E. Lawler, "Experimental and Numerical Study of a Low-Pressure Hg-Ar Discharge at High Current Densities," J. Phys. D 35, 2945 (2002).

X.L. Peng, J.J. Curry, G.G. Lister, and J.E. Lawler, "Radiometric efficiency of low-pressure barium discharges," In press J. Appl. Phy. 91, 1761 (2002).

J.J. Curry, H.G. Adler, S.D. Shastri, and J.E. Lawler, "Minority additive distributions in a ceramic metal-halide arc lamp using high-energy x-ray induced fluorescence," Appl. Phy. Lett. 79, 1974 (2001).

G.G. Lister, J.J. Curry, and J.E. Lawler, "Modeling of low-pressure barium - rare gas discharges," Phy. Rev. E 62, 5576 (2000).

J.E. Lawler, J.J. Curry, and G.G. Lister, "Analytic formula for radiation trapping with partial frequency redistribution and foreign gas broadening," J. Phy. D: Appl. Phy. 33, 252 (2000).

J.J. Curry, H.M. Anderson, J. MacDonagh-Dumler, J.E. Lawler, and G.G. Lister, "Multiline visible emission from a barium low-pressure discharge," J. Appl. Phy. 87, 2058 (2000).

Recent Invited Talks

"Laboratory x-ray imaging of high-intensity discharge lamps," Special Workshop on Plasma Light Generation at the XXVII^th International Conf. on Phenomena in Ionized Gases, Eindhoven, The Netherlands, July 17, 2005.

"X-ray techniques in metal-halide arc lamps," Invited Expert presentation at the European Commission's Working Group on Plasma Diagnostics and Modelling, Toulouse, France, December 4-5, 2003.

"X-ray diagnostics in HID lamps," Landmark Lecture at the 9^th Int'l Symp. on the Science and Technology of Light Sources, Ithaca, New York, 2001.

"Using synchrotron radiation as a laser: X-ray induced fluorescence in high-pressure lighting plasmas," Invited Talk at the 10^th Int'l Symp. Laser-Aided Plasma Diagnostics, Fukuoka, Japan, September 2001.

"Advanced X-ray diagnostics for High-Intensity Discharge Lamps," Invited Lecture at the Special Workshop on Non-Coherent Light Sources, 52^nd Gaseous Electronics Conference, Norfolk, Virginia, 1999.

Atomic Spectroscopy Group   |   Atomic Physics Division   |   Division Technical Highlights

Online: July 2002   -   Last update: January 2007