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Author: keith lykke

Displaying records 11 to 20 of 112 records.
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11. Measurement of the ultraviolet-induced fluorescence yield from integrating spheres
Published: 6/2/2009
Authors: Ping-Shine Shaw, Uwe Arp, Keith R Lykke
Abstract: We report theory and measurements of a simple and absolute technique for the determination of the total emitted spectral fluorescence yield inside an integrating sphere from the sphere coating under irradiation with a monochromatic beam. This techniq ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=842602

12. Stray Light Correction of the Marine Optical System
Published: 1/1/2009
Authors: M Feinholz, S Flora, M Yarbrough, Keith R Lykke, Steven W Brown, Bettye C Johnson, Dennis Clark
Abstract: The Marine Optical System is a spectrograph-based sensor used in the Marine Optical Buoy for the vicarious calibration of ocean color satellite sensors. It is also deployed from ships in instruments used to develop bio-optical algorithms that relate ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841158

13. Measurement science for climate remote sensing
Published: 8/20/2008
Authors: Gerald T Fraser, Steven W Brown, Raju Vsnu Datla, Bettye C Johnson, Keith R Lykke, Joseph Paul Rice
Abstract: The Earth s climate is very complex and highly variable, making it difficult to measure and model small changes that occur over decadal and longer time scales. The resulting uncertainties in measurement and modeling underlie the longterm debate over ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=842531

14. Ultraviolet Characterization of Integrating Spheres
Published: 7/9/2007
Authors: Ping-Shine Shaw, Zhigang Li, Uwe Arp, Keith R Lykke
Abstract: We have studied the performance of integrating spheres in the ultraviolet (UV) with wavelengths as short as 200 nm. Two techniques were used for this study; first, the spectral throughput of an integrating sphere irradiated by a deuterium lamp was an ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841052

15. Comparison of absolute spectral irradiance responsivity measurement techniques using wavelength-tunable lasers
Published: 6/20/2007
Authors: V Ahtee, Steven W Brown, Thomas C Larason, Keith R Lykke, E and Noorma Ikonen
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=101543

16. Synchrotron Radiation Based Irradiance Calibration From 200 nm to 400 nm at SURF III
Published: 1/1/2007
Authors: Uwe Arp, Charles E Gibson, Keith R Lykke, Albert C Parr, Robert D. Saunders, D J Shin, Ping-Shine Shaw, Zhigang Li, Howard W Yoon
Abstract: A new facility for measuring source irradiance was commissioned recently at the National Institute of Standards and Technology (NIST). The facility uses the calculable radiation from the Synchrotron Ultraviolet Radiation Facility (SURF III) as the pr ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841022

17. Absolute Radiant Flux Measurement of the Angular Distribution of Synchrotron Radiation
Published: 7/11/2006
Authors: Ping-Shine Shaw, Uwe Arp, Keith R Lykke
Abstract: We have measured the absolute radiant flux of synchrotron radiation as a function of the angle above and below the orbital plane with high accuracy at the Synchrotron Ultraviolet Radiation Facility (SURF III) and the results were compared with theore ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=840997

18. Facility for Spectral Irradiance and Radiance Responsivity Calibrations Using Uniform Sources (SIRCUS)
Published: 7/7/2006
Authors: Steven W Brown, George P Eppeldauer, Keith R Lykke
Abstract: Detectors have historically been calibrated for spectral power responsivity at the National Institute of Standards and Technology (NIST) using a lamp-monochromator system to tune the wavelength of the excitation source. Silicon detectors can be cali ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841000

19. A Simple Stray-light Correction Method for Array Spectroradiometers
Published: 2/20/2006
Authors: Yuqin Zong, Steven W Brown, Bettye C Johnson, Keith R Lykke, Yoshihiro Ohno
Abstract: In many applications, the measurement accuracy of spectroradiometers, particularly instruments with a single dispersive element, is limited by the presence of stray radiation within the instrument. A simple, practical method has been developed to co ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=840968

20. Simple spectral stray light correction method for array spectroradiometers
Published: 2/1/2006
Authors: Yuqin Zong, Steven W Brown, Bettye C Johnson, Keith R Lykke, Yoshihiro Ohno
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=100922



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