... This report looks at the possibility of deposited contaminants on the detectors by monitoring possible changes in effective area, keeping the absorption characteristics of likely contaminants in mind. ... Although there is room for some contamination by water(ice) and hydrocarbons leading to a maximum loss of effective area of 2% per year at the Oxygen edge and 8% per year at the longest RGS wavelength, this does not explain the total change in ratio between the Al and F cal source rates. ...
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Ссылки http://xmm.vilspa.esa.es/docs/documents/CAL-TN-0149-1-0.pdf -- 708.4 Кб -- 25.02.2015 Похожие документы
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