Strong higher-order resonant contributions to x-ray line polarization in hot plasmas
arXiv:1606.06776 · doi:10.1103/PhysRevE.93.061201
Abstract
We studied angular distributions of x rays emitted in resonant recombination of highly charged iron and krypton ions, resolving dielectronic, trielectronic, and quadruelectronic channels. A tunable electron beam drove these processes, inducing x rays registered by two detectors mounted along and perpendicular to the beam axis. The measured emission asymmetries comprehensively benchmarked full-order atomic calculations. We conclude that accurate polarization diagnostics of hot plasmas can only be obtained under the premise of inclusion of higher-order processes that were neglected in earlier work.
arXiv comment8 pages, 3 figures
References in corpus (19)
- Polarization of the prompt gamma-ray emission from the gamma-ray burst of 6 December 2002
- An efficient photoelectric X-ray Polarimeter for the study of Black Holes and Neutron Stars
- XIPE: the X-ray Imaging Polarimetry Explorer
- The polarized Gamma-Ray Burst GRB 061122
- GRB 140206A: the most distant polarized Gamma-Ray Burst
- Scientific Prospects for Hard X-ray Polarimetry
- Polarization measurement of dielectronic recombination transitions in highly charged krypton ions
- Polarization signatures of strong gravity in AGN accretion discs
- Soft Gamma-ray Detector for the ASTRO-H Mission
- RHESSI Observations of the Solar Flare Iron-line Feature at 6.7 keV
- PoGOLite - A High Sensitivity Balloon-Borne Soft Gamma-ray Polarimeter
- Polarization of resonance X-ray lines from clusters of galaxies
- The prospects for X-ray polarimetry and its potential use for understanding neutron stars
- Major role of multielectronic K-L inter-shell resonant recombination processes in Li- to O-like ions of Ar, Fe, and Kr
- Polarization of X-ray lines from galaxy clusters and elliptical galaxies - a way to measure tangential component of gas velocity
- Prospects of 3D mapping of the Galactic Centre clouds with X-ray polarimetry
- Anisotropic LMN dielectronic resonances from ratios of magnetic-dipole lines
- Anisotropic X-ray emission in AGN accretion discs
- Probing the origin of the iron K_alpha line around stellar and supermassive black holes using X-ray polarimetry
Cited by in corpus (9)
- Laboratory measurements compellingly support charge-exchange mechanism for the 'dark matter' 3.5 keV X-ray line
- Polarization of K-shell dielectronic recombination satellite lines of Fe XIX-XXV and its application for diagnostics of anisotropies of hot plasmas
- State-selective influence of the Breit interaction on the angular distribution of emitted photons following dielectronic recombination
- Revisiting the Fe XVII line emission problem: laboratory measurements of the 3s-2p and 3d-2p line-formation channels
- X-ray spectra of the Fe-L complex II: atomic data constraints from EBIT experiment and X-ray grating observations of Capella
- High-resolution Laboratory Measurements of K-shell X-ray Line Polarization and Excitation Cross Sections in Heliumlike S XV Ions
- Observation of strong two-electron--one-photon transitions in few-electron ion
- Comprehensive Laboratory Measurements Resolving the LMM Dielectronic Recombination Satellite Lines in Ne-like Fe XVII Ions
- Resonance strengths for KLL dielectronic recombination of highly charged mercury ions and improved empirical -scaling law