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Search Publications by: Uwe Arp (Fed)

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Displaying 26 - 50 of 86

Damage to Solid-State Photodiodes by Vacuum Ultraviolet Radiation

June 1, 2005
Author(s)
Uwe Arp, Ping-Shine Shaw, R Gupta, Keith R. Lykke
We report experimental results on the stability of photodiodes obtained at three different wavelengths in the vacuum ultraviolet spectral region. Two of these experiments were based on radiation damage inflicted with excimer lasers at 193 nm and 157 nm and

40 Years of Metrology With Synchrotron Radiation at SURF

September 1, 2003
Author(s)
Uwe Arp, Steven E. Grantham, Simon G. Kaplan, Ping-Shine Shaw, Charles S. Tarrio, Robert E. Vest
the advantages of a compact synchrotron radiation source like the Synchrotron Ultraviolet Radiation Facility for metrology in the ultraviolet and extreme ultraviolet are shown. The capabilities of the different experimental stations are explained and

A SURF Beamline for Synchrotron Source-Based Absolute Radiometry

February 1, 2003
Author(s)
Ping-Shine Shaw, Uwe Arp, Howard W. Yoon, Robert D. Saunders, Albert C. Parr, Keith R. Lykke
A new source-based radiometry beamline at Synchrotron Ultraviolet Radiation Facility (SURF III) was constructed recently. The goal of this beamline is to establish a national source standard with wide spectral range from far UVto IR by using the

Characterisation of the Response of Chromium-Doped Alumina Screens in the Vacuum Ultraviolet Using Synchrotron Radiation

December 1, 2002
Author(s)
James K. McCarthy, A Baciero, B Zurro, Uwe Arp, Charles Tarrio, Thomas B. Lucatorto, A Morono, P Martin, E R. Hodgson
We have measured the response of chromium-doped alumina screens to vacuum ultraviolet radiation and derived quantum efficiency curves for the energy range from 30 to 300 eV. A model is presented to explain the structure in this curve. In addition, the

Studies of Intensity Noise at Synchrotron Ultraviolet Radiation Facility III

March 1, 2002
Author(s)
Uwe Arp, Thomas B. Lucatorto, K Harkay, K Kim
Suppression of beam instabilities has become an important goal at synchrotron radiation light sources, where highly sensitive applications like metrology, Fourier--transform spectroscopy and microscopy are now in use. We describe measurements connecting

Synchrotron Ultraviolet Radiation Facility SURF III

March 1, 2002
Author(s)
Uwe Arp, Charles W. Clark, Alex P. Farrell, E Fein, Mitchell L. Furst, Edward W. Hagley
The National Institute of Standards and Technology (NIST) has operated the Synchrotron Ultraviolet Radiation Facility (SURF) continuously since the early 1960s. The original accelerator was converted into a storage ring, called SURF II, in 1974. Then in

The New Beamline 3 at SURF III for Source-Based Radiometry

March 1, 2002
Author(s)
Ping-Shine Shaw, D A. Shear, R Stamilio, Uwe Arp, Howard W. Yoon, Robert D. Saunders, Albert C. Parr, Keith R. Lykke
The Synchrotron Ultraviolet RAdiation Facility (SURF III) at the National Institute of Standards and Technology provides a unique opportunity for high-accuracy UV to infrared radiometry due to the 70-fold improvement in the uniformity of the magnetic field

The New UV Radiometry Facility at SURF

March 1, 2002
Author(s)
Ping-Shine Shaw, Keith R. Lykke, R Gupta, Uwe Arp, Thomas B. Lucatorto, Albert C. Parr
The Synchrotron Ultraviolet Radiation Facility (SURF III) at the National Institute of Standards and Technology (NIST) provides a unique opportunity for high-accuracy VUV to visible radiometry with the completion of a recent upgrade to improve the

Upgrades to the NIST/DARPA EUV Reflectometry Facility

December 1, 2001
Author(s)
Charles S. Tarrio, Thomas B. Lucatorto, S Grantham, M B. Squires, Uwe Arp, Lu Deng
We have recently installed a new sample chamber at the NIST/DARPA EUV Reflectometry Facility at the National Institute of Standards and Technology. The chamber replaces a much smaller system on Beamline 7 at the Synchrotron Ultraviolet Radiation Facility