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Search Publications by: John Curry (Ctr)

Displaying 26 - 40 of 40

X-Ray Absorption Imaging of High-Pressure Lighting Plasmas

January 1, 2005

Author(s)

John J. Curry, Craig J. Sansonetti

Power Balance in Highly Loaded Fluorescent Lamps

October 28, 2004

Author(s)

G G. Lister, John J. Curry, James E. Lawler

Discrepancies reported in the literature between numerical predictions and experimental measurements in low-pressure Hg discharges at high current densities are considered. A one-dimensional fluid model and recent spectroscopic and Langmuir probe

A Compilation of Wavelengths, Energy Levels, and Transition Probabilities for Ba I and Ba II

August 13, 2004

Author(s)

John J. Curry

Energy levels, wavelengths, and transition probabilities for Ba I and Ba II have been compiled. The data are obtained from a critical evaluation of experimental measurements, and some transition probability calculations, described in the literature.

Deviations From Equilibrium of Thallium Level Populations in a Metal Halide Arc Lamp

July 1, 2004

Author(s)

D Karahourniotis, John J. Curry, E Drakakis, Eric C. Benck

The excitation equilibrium in a metal halide lamp was studied using a method based on optically thick lines without the assumption of local thermodynamic equilibrium (LTE). The lamp has a diameter of 15.4 mm, an electrode gap of 28 mm, and was operated

Systematic Observations of 150 W Metal-Halide Arc Lamps Containing a Progression of Additive Chemistries

July 1, 2004

Author(s)

John J. Curry, Craig J. Sansonetti

With three complimentary diagnostic methods, we examined a series of 150 W metal-halide arc lamps containing a progression of additive chemistries: 1) pure Hg, 2) Hg + HgI2, 3) Hg + NaI, and 4) Hg + NaI + DyI3. We obtained spatial distributions of Hg using

X-Ray Absorption Imaging of Hg Vapor in a Ceramic Metal-Halide Lamp Using Synchrotron Radiation

May 1, 2004

Author(s)

John J. Curry, H G. Adler, A MacPhee, Suresh Narayanan, J C. Wang

The diagnostic technique based on absorption of x-rays by the Hg vapor in a high-intensity discharge lamp has been extended using synchrotron radiation as the source of x-rays and an intensified charge-coupled device (ICCD) as the detector. The high photon

Compilation of Wavelengths, Energy Levels, and Transition Probabilities for Ba I and Ba II

January 1, 2004

Author(s)

John J. Curry

Deviations from equilibrium of thallium level populations in a metal halide arc lamp, ed. by G. Zissis

January 1, 2004

Author(s)

D Karaborniotis, John J. Curry, E Drakakis, Eric C. Benck

Power balance in highly loaded fluorescent lamps

January 1, 2004

Author(s)

G G. Lister, John J. Curry, J E. Lawler

Direct Observation of De-Mixing in a Ceramic Metal-Halide Arc Lamp

June 18, 2003

Author(s)

John J. Curry, H G. Adler, S Shastri, W -. Lee

De-mixing of additives in a vertically-operated DyI 3-CsI-Hg ceramic metal halide arc lamp has been observed by examining the ratios of absolute elemental densities as a function of position. As the elemental densities have been obtained directly by x-ray

Direct Observation of De-Mixing in a Ceramic Metal-Halide Lamp Using High Energy X-Ray Induced Fluorescence

June 18, 2003

Author(s)

John J. Curry, H G. Adler, W -. Lee, S Shastri

Number densities of the elemental constituents in a ceramic metal-halide high intensity discharge lamp have been obtained with x-ray induced fluorescence. Hg, Dy, Cs, and I have been examined as a function of radial position in the midplane of a Hg lamp

X-Ray Induced Fluorescence Measurement of Density Distributions in a Metal-Halide Lighting Arc

March 1, 2003

Author(s)

John J. Curry, H G. Adler, S Shastri, W -. Lee

The use of x-ray induced fluorescence to measure elemental densities in a metal-halide lighting arc is described. High-energy synchrotron radiation generated on the Sector 1 Insertion Device beam line at the Advanced Photon Source induces K-shell

Direct Observation of De-Mixing in a Ceramic Metal-Halide Arc Lamp

January 1, 2003

Author(s)

John J. Curry, H G. Adler, W K. Lee, S D. Shastri

X-Ray Induced Fluorescence Measurement of Density Distributions in a Metal-Halide Lighting Arc

January 1, 2003

Author(s)

John J. Curry, H G. Adler, S D. Shastri, W K. Lee

Experimental and Numerical Study of a Low-Pressure Hg-Ar Discharge at High Current Densities

January 1, 2002

Author(s)

John J. Curry, G G. Lister, J E. Lawler