XUV Radiometric Standards at NBS

W. R. Ott; L. R. Canfield; S. C. Ebner; L. R. Hughey; R. P. Madden

doi:10.1117/12.936580

12 August 1986 XUV Radiometric Standards at NBS

W. R. Ott, L. R. Canfield, S. C. Ebner, L. R. Hughey, R. P. Madden

Proceedings Volume 0689, X-Ray Calibration: Techniques, Sources, and Detectors; (1986) https://doi.org/10.1117/12.936580
Event: 30th Annual Technical Symposium, 1986, San Diego, United States

Abstract

The National Bureau of Standards supports a research and development program in the vacuum ultraviolet and soft x-ray region of the spectrum with the goal of providing radiometric source and detector standards for measurement applications. Windowless photodiodes are calibrated for absolute quantum efficiency in the spectral range 5 nm-122 nm (250 eV-10 eV) with estimated uncertainties of 8-15%. The primary standard used in these calibrations is a rare gas ionization chamber. The measurement program utilizes the NBS 300 MeV Synchrotron Ultraviolet Radiation Facility, SURF II, which has two dedicated beam lines for radiometric research and calibration activities. One of these beam lines supports detector radiometry. The second is dedicated to the calibration of spectrometric instruments in the wavelength range from about 4 nm (300 eV) up into the visible. The photon flux of the synchrotron radiation beam at the entrance aperture of the user's instrument is known to within an uncertainty of from 2 to 6%, depending upon wavelength. The presentation will review these instrument and detector calibration services and also describe several soft x-ray measurement-related research projects where NBS staff and visiting scientists have been active.

Citation Download Citation

W. R. Ott, L. R. Canfield, S. C. Ebner, L. R. Hughey, and R. P. Madden "XUV Radiometric Standards at NBS", Proc. SPIE 0689, X-Ray Calibration: Techniques, Sources, and Detectors, (12 August 1986); https://doi.org/10.1117/12.936580

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available