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Displaying 26 - 50 of 80

Use of Phosphor Image Plates for Measuring Intensities in Vacuum Ultraviolet Spectra

January 28, 2011
Author(s)
Gillian Nave, Craig J. Sansonetti, Csilla Szabo, John J. Curry, Darren Smillie
We describe the use of phosphor image plates for recording spectra in the vacuum ultraviolet (VUV) and for determining accurate relative and absolute intensities. We investigated the spatial uniformity, noise level, linearity of the response to VUV light

Cold light from hot atoms

January 1, 2011
Author(s)
John J. Curry, G G. Lister
The introduction of rare earth atoms and molecules into lighting discharges led to great advances in efficacy of these lamps. Atoms such as Dy, Ho and Ce provide excellent radiation sources for lighting applications1, with strong radiation bands in the

Absolute transition probabilities for 559 strong lines of neutral cerium

June 17, 2009
Author(s)
John J. Curry
Absolute radiative transition probabilities are reported for 559 strong lines of neutral cerium covering the wavelength range 340 nm to 880 nm. These transition probabilities are obtained by scaling published relative line intensities\cite{MCS75} with a

X-Ray Induced Fluorescence Measurement of Segregation in a DyI3 Metal-Halide Lamp

April 19, 2007
Author(s)
T Nimalisuriya, John J. Curry, Craig J. Sansonetti, E J. Ridderhof, S Shastri, A J. Flikweert, W W. Stoffels, M Haverlag, J J. van der Mullen
X-ray induced fluorescence measurements, using high energy synchrotron radiation generated on the Sector 1 Insertion Device beamline at the Advanced Photon Source, were performed on a metal-halide lamp containing Hg and DyI$_3}$. Density distributions of

Laboratory X-Ray Imaging of High-Intensity Discharge Lamps

July 22, 2005
Author(s)
John J. Curry, B Lafitte
We describe a laboratory-scale system for x-ray absorption imaging of the Hg vapor distribution in high-intensity discharge plasmas. This system utilizes commercially-available equipment, including an x-ray tube source. We analyze the sensitivity of the

X-Ray Absorption Imaging of High-Pressure Lighting Plasmas

April 1, 2005
Author(s)
John J. Curry, Craig J. Sansonetti
X-ray absorption has been used to image the distribution of Hg in high-pressure arc lamps used for lighting (Curry, Sansonetti, and Wang, in progress). Here, several images are presented showing the analytic transformation of raw x-ray data into an image