A New Photoelectron Imager for X-Ray Astronomical Polarimetry
| Autor: | G. Di Persio, A. La Monaca, P. Soffitta, G. Cappuccio, G. Patria, B. Martino, M. Manzan, N. Zema, Enrico Costa |
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| Jazyk: | angličtina |
| Rok vydání: | 1998 |
| Předmět: |
Physics
Nuclear and High Energy Physics Scintillation Photon Auger effect business.industry Physics::Instrumentation and Detectors Astrophysics::High Energy Astrophysical Phenomena Detector Polarimetry Astrophysics::Instrumentation and Methods for Astrophysics Cassegrain reflector Photoelectric effect Polarization (waves) symbols.namesake Optics symbols Physics::Atomic and Molecular Clusters business Instrumentation |
| DOI: | 10.15161/oar.it/1447934040.27 |
| Popis: | A new photoelectron imager for X-ray astronomical polarimetry (PIAP) has been developed and tested at the Frascati laboratories (LNF-INFN). A charge-coupled device (CCD) is placed on one of the two conjugate foci of a Cassegrain reflective optics onto which are focused UV photons emitted by means of gas scintillation. This X-ray detector has been built to image the angular distribution of the photoelectron tracks, whose anisotropy measures the X-ray polarization. First tests, performed by using mixtures based on argon gas and benzene at low pressure, show events which are candidate tracks of photoelectrons and Auger electrons produced by a 55 Fe source. |
| Databáze: | OpenAIRE |
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