Computer Science
Scientific paper
Oct 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993spie.2019..374b&link_type=abstract
Proc. SPIE Vol. 2019, p. 374-385, Infrared Spaceborne Remote Sensing, Marija S. Scholl; Ed.
Computer Science
Scientific paper
Potential transmitting materials for the STIS mission are being considered for order sorters, in-flight calibration filters, detector windows and calibration lamps. In this paper we examine the changes in spectral transmission characteristics with radiation dosage during a mission lifetime. A radiation environment for a 593 km altitude, 28 degree inclination orbit, for solar minimum and solar maximum, assuming a spherical shielding of 2 gms/cm2$ has been assumed. The dosage for protons is 0.392 Krad (Al/Yr. and 0.217 Krad (Al)/Yr. for solar minimum and solar maximum respectively. To simulate the mission radiation environment Harvard Cyclotron Laboratory (HCL) has been used. Spectral transmission was measured between 210 nm and 3200 nm using a Perkin Elmer Lambda 9 monochromator. Below 210 nm a one meter McPherson vacuum monochromator was used. Transmission curves for all samples were obtained before irradiation and compared for equality in transmission.
Becher Jacob
Fowler Walter B.
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