X-ray polarimetry: The measurement of the polarization of solar flare X-rays and the design of a Compton polarimeter

Details X-ray polarimetry: The measurement of the polarization of solar flare X-rays and the design of a Compton polarimeter X-ray polarimetry: The measurement of the polarization of solar flare X-rays and the design of a Compton polarimeter

Sep 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984phdt.........4t&link_type=abstract

Ph.D. Thesis Columbia Univ., New York, NY.

Astronomy and Astrophysics

Astrophysics

Astrophysics, Compton Effect, Polarimeters, Solar Flares, Space Shuttle Payloads, X Rays, Inelastic Scattering, Polarization (Waves), Predictions, Proportional Counters, Thomson Scattering

Scientific paper

A Compton polarimeter was designed for use in X-ray astrophysics. This device utilizes the anisotropic Compton scattering of polarized X-rays to determine their polarization, and incorporates an intrinsic coincidence rejection scheme to reduce the non-X-ray background. The Compton polarimeter is sensitive to X-rays from 30 to 100 kiloelectronvolts. Another class of X-ray polarimeter, the photoelectric polarimeter, is discussed. This class of devices detects the anisotropic distribution of photoelectrons ejected by polarized X-rays. The energy range for this instrument is 5 to 100 kiloelectronvolts. An analysis of electron scattering, a complicating effect for these devices, is presented which indicates a severe limitation on the utility of photoelectric polarimeters. This theoretical work is reconciled with the previous experiments. One implementation, using an imaging proportional counter, was tested in the laboratory. No polarization effects were seen.

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