Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Ultraviolet converter transients induced by electrons

Not Accessible

Your library or personal account may give you access

Abstract

The output of ultraviolet converters typically used in satellite astronomy was monitored during irradiation with electrons from a sealed 90Sr source which approximated the peak flux in earth’s outer electron belt. The signal induced by irradiation was attributed to two mechanisms: (1) photoelectrons resulting from photons created in the MgF2 window and (2) the direct impact of electrons on the phosphor. For irradiation the at ~1 × 107 e/cm2 sec, these two effects produced signals which were, in order of magnitude, the same as those produced by an incident UV flux (254 nm) of 108 and 107 photons/cm2 sec, respectively. In addition, the induced signal was investigated as a function of electron energy by irradiating another converter with 0.4–1.8-MeV electrons from a Van de Graaff. These results suggest that the dominant contribution to the electron-induced signal is Cerenkov photon production in the MgF2 window.

© 1984 Optical Society of America

Full Article  |  PDF Article
More Like This
Photomultiplier window materials under electron irradiation: fluorescence and phosphorescence

W. Viehmann, A. G. Eubanks, G. F. Pieper, and J. H. Bredekamp
Appl. Opt. 14(9) 2104-2115 (1975)

Performance Characteristics of Proximity Focused Ultraviolet Image Converters

Jack T. Williams and Walter A. Feibelman
Appl. Opt. 12(12) 2832-2837 (1973)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (3)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved