The photoemission polarimeter in soft X-ray astronomy.

Details The photoemission polarimeter in soft X-ray astronomy. The photoemission polarimeter in soft X-ray astronomy.

Jul 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989spie.1160..568f&link_type=abstract

Conference on X-Ray/EUV Optics for Astronomy and Microscopy, p. 568 - 579

Physics

Optics

Polarimeters: X-Ray Telescopes

Scientific paper

Measurements have recently shown that the pulse quantum yield (counts/photon) of CsI X-ray photocathodes, measured near grazing incidence, depends on the linear polarisation state of the incident beam. These results have implications both for the fundamental understanding of the X-ray photoeffect and, since CsI is well-known as a cathode material of high (unpolarised) quantum efficiency in the 0.1 - 1.0 keV band, for the development of high throughput astronomical X-ray polarimetry. This paper, concentrating on the latter topic, describes the practical accomodation of a photoemission polarimeter at (or near) the focus of a satellite X-ray telescope.

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