Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Full Refereed Journal Article (PDF/Postscript)
· Full Refereed Scanned Article (GIF)
· On-line Data
· References in the article
· Citations to the Article (19) (Citation History)
· Refereed Citations to the Article
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
Effect of iron ionization balance on X-ray spectral analysis.
Authors:
Masai, K.
Publication:
Astronomy and Astrophysics, v.324, p.410-416 (A&A Homepage)
Publication Date:
08/1997
Origin:
A&A via CDS
A&A Keywords:
ATOMIC AND MOLECULAR PROCESSES, PLASMAS, X-RAYS: GENERAL
Bibliographic Code:
1997A&A...324..410M

Abstract

We have investigated the uncertainty in the ionization and recombination rates for iron and its impact on the derivation of the iron elemental abundance from X-ray emission spectra. Most uncertainty is found in the dielectronic recombination rates for iron ions with L-shell outer electrons. The quantitative effect of this uncertainty on the derivation of the iron abundance depends on the spectral resolving power of X-ray detectors. With the resolution achieved by ASCA, the differences among ionization balance models come out to ~30% in the iron elemental abundance and ~15% in the temperature at temperatures kT~1keV. To eliminate the effects of the ionization balance, finally, we suggest taking ionization temperature as well as the electron temperature into account for spectral analysis. This way is useful also for plasmas in the presence of ionizing photons.

Printing Options

Print whole paper
Print Page(s) through

Return 600 dpi PDF to Acrobat/Browser. Different resolutions (200 or 600 dpi), formats (Postscript, PDF, etc), page sizes (US Letter, European A4, etc), and compression (gzip,compress,none) can be set through the Printing Preferences


More Article Retrieval Options

HELP for Article Retrieval
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)
   

Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints