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1. Calibration procedure for UV-365 integrated irradiance measurements
George P Eppeldauer, Thomas C Larason, Robert Edward Vest, Uwe Arp, Howard W Yoon
Since the CIE standardized rectangular-shape spectral response function for the 320 nm to 400 nm wavelength range can be realized only with large spectral mismatch, the realized UV-A meters have different response functions resulting in large errors ...
2. Pioneering use of Synchrotron Radiation Research as a spectroscopic and metrological tool at NBS
Charles S Tarrio, Keith Codling, Ederer David, Uwe Arp, Charles W Clark, Thomas B Lucatorto
Interest in the use of Synchrotron Radiation (SR) as a source of continuum in the extreme ultraviolet (EUV) spectral region was stimulated by the 1956 Physical Review article by Diran Tomboulian and Paul Hartman of Cornell University. In their all-t ...
3. Compact X-ray and Extreme-Ultraviolet Light Sources
Lahsen Assoufid, Uwe Arp, Patrick Naulleau, Sandra Biedron , William Graves
Bringing the brightness and power of vast synchrotron and free-electron laser sources to the
scale of the lab and clinic marks an important next frontier,and could transform the landscape of
X-ray science and technology.
4. IR-enhanced Si reference detectors for 1-step scale transfers from 300 nm to 1000 nm
George P Eppeldauer, Thomas C Larason, Jeanne M Houston, Robert Edward Vest, Uwe Arp, Howard W Yoon
IR-enhanced Si photodiodes have improved radiometric and electronic characteristics as compared to other widely used Si photodiodes and can be used as responsivity standards in the wavelength range from 300 nm to 1000 nm. Their low predicted uncerta ...
5. Absolute pulse energy measurements of soft x-rays at the Linac Coherent Light Source
Uwe Arp, Alexander Sorokin, Ulf Jastrow, Pavle Jurani?, Svea Kreis, Mathias Richter, Yiping Feng, Dennis Nordlund, Kai Tiedtke, Philip Heimann, Bob Nagler, Hae Ja Lee, Stephanie Mack, Marco Cammarata, Oleg Krupin, Marc Messerschmidt, Michael Holmes , Michael Rowen, William Schlotter, Stefan Moeller, Joshua Turner
This paper reports novel measurements of x-ray optical radiation on an absolute scale from a
recently developed source of radiation generated in the soft x-ray regime of a free electron laser.
We give a brief description of the physics behind the ...
6. Argon mini-arc mets its match: use of a laser-driven plasma source in ultraviolet-detector
Uwe Arp, Robert Edward Vest, Jeanne M Houston, Thomas B Lucatorto
The National Institute of Standards and Technology operates two Spectral Comparator Facilities,
which are used to provide detector calibrations from the ultraviolet to the near-infrared spectral
range. One of them, the Ultraviolet Spectral Compar ...
7. First Report on Quantum Dot Coated CMOS CID Arrays for the UV and VUV
Uwe Arp, Robert Edward Vest, Zoran Ninkov, Ross Robinson, Suraj Bhaskaran
A technique has been developed for coating commercial off the shelf (COTS) detector arrays with a thin, uniform layer of quantum dots. The quantum deposition is accomplished using an Optomec Aerosol Jet rapid prototyping system. When illuminated by U ...
8. Response of large area avalanche photodiodes to low energy X-rays
Thomas R Gentile, Uwe Arp, M J Bales, R Farrell
For an experiment to study neutron radiative beta-decay, we operated large area avalanche
photodiodes (APDs) at liquid nitrogen temperature to detect X-rays with energies between 0.2 keV
and 15 keV. Whereas there are numerous reports of X-ray spect ...
9. SURF III: A flexible Synchrotron Radiation Source for Radiometry and Research
Uwe Arp, Charles W Clark, Lu Deng, Nadir S. Faradzhev, Alex P. Farrell, Mitchell L. Furst, Steven E Grantham, Edward W Hagley, Shannon Bradley Hill, Thomas B Lucatorto, Ping-Shine Shaw, Charles S Tarrio, Robert Edward Vest
The calculability of synchrotron radiation (SR) makes electron storage rings wonderful light sources for radiometry. The broadband nature of SR allows coverage of the whole spectral region from the x-ray to the far-infrared. Compact low-energy storag ...
Uwe Arp, Zhigang Li, Ping-Shine Shaw, Mathias Richter, Roman Klein, Wolfgang Paustian, Reiner Thornagel
We report on a successful bilateral inter-comparison between the Physikalisch-Technische Bundesanstalt (PTB) and the National Institute of Standards and Technology (NIST). In both laboratories deuterium lamps were calibrated using the calculability o ...