Calibration of an EUV spectrometer using synchrotron radiation to distinguish overlapping orders

Steven N. Osterman; Gary J. Rottman

doi:10.1117/12.130707

8 October 1992 Calibration of an EUV spectrometer using synchrotron radiation to distinguish overlapping orders

Steven N. Osterman, Gary J. Rottman

Proceedings Volume 1743, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy III; (1992) https://doi.org/10.1117/12.130707
Event: San Diego '92, 1992, San Diego, CA, United States

Abstract

We have calibrated a high resolution EUV spectrometer in three spectroscopic orders using the National Institute for Science and Technology's Synchrotron Ultraviolet Radiation Facility (SURF-II) at Gaithersburg, MD. The spectrometer was the principal instrument on a University of Colorado sounding rocket experiment, with a first order bandpass of roughly 5.8 nm centered at 155.5 nm, and resolving power of 4 X 10⁴. Synchrotron radiation provides a well calibrated, columnated and polarized light source well suited to photometric calibration. The spectral distribution of synchrotron radiation is extremely well known from the theory of synchrotron radiation, and the spectral shape and intensity are directly related to the electron beam energy and current. If the instrument is calibrated at as many different beam energies as there are spectroscopic orders, then the spectrometer efficiency in each order can be determined from a single set of simultaneous equations. A difficulty arises in that the system of equations can be sensitive to perturbations of the level of experimental uncertainty. We have been able to reduce the number of unknowns by independently determining the first order efficiency and thus overdetermine the set of equations. The resulting efficiency measurements are accurate and reliable.

Citation Download Citation

Steven N. Osterman and Gary J. Rottman "Calibration of an EUV spectrometer using synchrotron radiation to distinguish overlapping orders", Proc. SPIE 1743, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy III, (8 October 1992); https://doi.org/10.1117/12.130707

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