Zobrazeno 1 - 10
of 32
pro vyhledávání: '"L. R. Canfield"'
Autor:
Thomas N. Woods, Stanley C. Solomon, Charles A. Barth, R. Korde, Scott M. Bailey, L. R. Canfield
Publikováno v:
Journal of Geophysical Research: Space Physics. 105:27179-27193
Beginning on March 11, 1998, the Student Nitric Oxide Explorer (SNOE) satellite has made daily observations of the solar soft X-ray irradiance. These measurements are carried out by a multichannel photometer system. The spectral range between 2 and 2
Autor:
Gary J. Rottman, Scott M. Bailey, Thomas N. Woods, L. R. Canfield, Stanley C. Solomon, R. Korde, Charles A. Barth
Publikováno v:
Solar Physics. 186:243-257
Measurements of the solar soft X-ray (XUV: 2 nm to 30 nm) irradiance were performed from a sounding rocket payload flown from White Sands Missile Range, New Mexico on 4 October 1993 and again on 3 November 1994. The soft X-ray instrumentation compris
Publikováno v:
Metrologia. 35:329-334
Silicon n-on-p photodiodes with 100 % internal quantum efficiency have been studied in the 160 nm to 254 nm spectral range. Preliminary values have been determined for the quantum yield of silicon at these wavelengths. Using these values, a trap dete
Publikováno v:
Journal of Electron Spectroscopy and Related Phenomena. 80:313-316
Stable silicon photodiodes with 100% internal quantum efficiency have been developed for the vacuum ultraviolet and soft x-ray regions. It is demonstrated that the response of these detectors can be reasonably well represented by a simple model for p
Autor:
R. P. Madden, H. Kaase, W. M. Burton, A. Ridgeley, L. R. Canfield, A. T. Hatter, K. H. Stephan
Publikováno v:
Applied optics. 19(15)
The work described in this paper covers an intercomparison of absolute irradiance calibration methods applied at the U.S. National Bureau of Standards (NBS), the SRC Appleton Laboratory, Astrophysics Research Division (ARD), the Max-Planck-Institut f
Publikováno v:
Applied optics. 12(7)
A program at NBS leading to the realization of practical, stable transfer detector standards for the far ultraviolet is reviewed. Three basic detector types, one covering the region of 584–1216 A and the other two covering the region of 1164–2537
Publikováno v:
Applied optics. 6(11)
A comparison has been made between a calibrated thermopile and an argon ionization chamber as absolute detectors of radiant flux of wavelengths 584 A and 735 A. Corrections were applied to the data in order to account for the absorption due to gases
Publikováno v:
Review of Scientific Instruments. 66:2257-2259
The National Institute of Standards and Technology (NIST) in Gaithersburg, MD, is the site of the Synchrotron Ultraviolet Radiation Facility (SURF II). The synchrotron radiation from the 300 MeV electron storage ring is used for most of the NIST radi
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 347:291-293
A new monochromator system has been developed that permits the in situ calibration of its optical components and allows the calibration of a photodiode against a calculable synchrotron radiation source in the spectral range extending from 116 to 254
Autor:
Robert E. Vest, L. R. Canfield
Publikováno v:
AIP Conference Proceedings.
The upgrade of the SURF electron storage ring has provided an opportunity to make several improvements to the detector radiometry beamline (BL-9). A new control and data acquisition system has been developed and new high-order-suppression filters hav