Search results for "Ionization of atom"

showing 2 items of 2 documents

The Zoo of emission lines in the spectrum of Cir X-1 observed by XMM-Newton

2007

We present the preliminary analysis of a 10 ks XMM-Newton EPIC/pn observation of Cir X-1 immediately after the zero phase. The continuum emission is modeled using a blackbody component partially absorbed by neutral matter probably located around the binary system. We detect a forest of emission lines associated to highly ionized ions.

PhysicsAstrophysics::High Energy Astrophysical PhenomenaAstronomyAtomic and molecular dataAstrophysicsAtomic processes and interactionSpectraEPICPolarization (waves)Spectral parametersPhotoionization of atoms and ionPreliminary analysisIonIonizationBlack-body radiationEmission spectrumBinary systemAtomic and molecular data; Atomic processes and interactions; Photoionization of atoms and ions; Spectra; Spectral parameters
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EBIT diagnostics using X-ray spectra of highly ionized Ne

2003

We have carried out a detailed analysis of highly ionized neon spectra collected at the NIST EBIT using an NTD germanium X-ray microcalorimeter developed at the Harvard-Smithsonian Center for Astrophysics [Nucl. Instr. and Meth. A 444 (2000) 156]. Our attention was focused especially on the Ne IX He-like triplet to check electron density diagnostics through the intercombination/forbidden line ratio. We have investigated possible effects of the ion dynamics on the plasma emission line intensities, looking at the dependence of the count-rate and the charge state distribution on the electron beam energy and current. The temperature and spatial distribution of the neon ions, and hence the overl…

X-ray spectraNuclear and High Energy PhysicsElectron densityEBITChemistrySurfaces Coatings and Filmchemistry.chemical_elementFizikai tudományokSurfaces and InterfacesPlasmaIonNeonSettore FIS/05 - Astronomia E AstrofisicaTermészettudományokIonizationAstrophysical plasmaPhysics::Atomic PhysicsEmission spectrumAtomic physicsIonization of atomForbidden mechanismInstrumentationExcitation
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