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- W2079171624 abstract "The VETA-I mirror was calibrated with the use of a collimated soft X-ray source produced by electron bombardment of various anode materials. The FWHM, effective area and encircled energy were measured with the use of proportional counters that were scanned with a set of circular apertures. The pulsers from the proportional counters were sent through a multichannel analyzer that produced a pulse height spectrum. In order to characterize the properties of the mirror at different discrete photon energies one desires to extract from the pulse height distribution only those photons that originated from the characteristic line emission of the X-ray target source. We have developed a code that fits a modeled spectrum to the observed X-ray data, extracts the counts that originated from the line emission, and estimates the error in these counts. The function that is fitted to the X-ray spectra includes a Prescott function for the resolution of the detector a second Prescott function for a pileup peak and a X-ray continuum function. The continuum component is determined by calculating the absorption of the target Bremsstrahlung through various filters, correcting for the reflectivity of the mirror and convolving with the detector response." @default.
- W2079171624 created "2016-06-24" @default.
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- W2079171624 date "1993-01-21" @default.
- W2079171624 modified "2023-09-23" @default.
- W2079171624 title "Correcting x-ray spectra obtained from the AXAF VETA-I mirror calibration for pileup, continuum, background and deadtime" @default.
- W2079171624 doi "https://doi.org/10.1117/12.140607" @default.
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