Abstract Details
| Name: Srikanth Panini Singam Affiliation: Indian Institute of Astrophysics Conference ID: ASI2017_584 Title : Development of multilayer mirror based soft X-ray polarimeter Authors and Co-Authors : Dr.P.Sreekumar(IIA),Dr. K.C.Shyama Narendranath(ISRO), Dr.P.S.Athiray(UM), Dr.H.L.Marshall(MIT) Abstract Type : Oral Abstract Category : Instrumentation and Techniques Abstract : X-ray polarimetry is one of the last observing windows that has been poorly explored. The difficulty is mainly due the lack of polarizing detecting elements at X-ray regime. Multilayer mirrors can operated at Brewster's angle whose reflectivity is a function of the polarization state of the incident X-ray. Polarimeter using multilayer mirrors are sensitive to very soft X-ray with lower cutoff energy as low as 0.2 keV where no other technique is efficient. Design of a soft X-ray polarimeter is made with broad band sensitivity from 0.2 keV to 0.8 keV. Modulation index of the instrument over entire range is over 0.95. Design aspects of the instrument, effective area estimation and the poarization detection sensitivity will be presented. Initial results of soft X-ray reflectivity of the multilayer mirror at Brewster's angle will also be presented. |