Publication Date:
2019-07-13
Description:
During its first 16 years of operation, the cold (about -60 C) optical blocking filter of the Advanced CCD Imaging Spectrometer (ACIS), aboard the Chandra X-ray Observatory, has accumulated a growing layer of molecular contamination that attenuates low-energy x rays. Over the past few years, the accumulation rate, spatial distribution, and composition have changed. This evolution has motivated further analysis of contamination migration within and near the ACIS cavity, in part to evaluate potential bake-out scenarios intended to reduce the level of contamination. Keywords: X-ray astronomy, CCDs, contamination, modeling and simulation, spacecraft operations
Keywords:
Astrophysics
Type:
MSFC-E-DAA-TN27041
,
UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XIX; Aug 09, 2015 - Aug 10, 2015; San Diego, CA; United States
Format:
application/pdf