NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.
Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.
An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Emission-Line Intensity Ratios in FeXVII Observed with a Microcalorimeter on an Electron Beam Ion Trap
Published
Author(s)
J M. Laming, I Kink, E Takacs, James V. Porto, John D. Gillaspy, E Silver, H. Schnopper, Simon R. Bandler, N Brickhouse, S Murray, M Barbera, A K. Bhatia, G. A. Doschek, N. Madden, D Landis, J. Beeman, E. E. Haller
Abstract
We report new observations of emission line intensity ratios of Fe XVII under controlled experimental conditions, using the National Institute of Standards and Technology electron beam ion trap (EBIT) with a microcalorimeter detector. . . .Both R-matrix and distorted wave approxomations agree with each other and our experimental results much better than most solar and stellar observations, suggesting that other proceses not present in our experiment must play a role in forming the Fe XVII spectrum in solar and astrophysical plasmas.
Citation
Astrophysical Journal
Volume
545
Issue
No. 2
Pub Type
Journals
Keywords
atoms, electron beam ion trap, emission-line intensity ratios, intensity ratios, ions, microcalorimeter
Citation
Laming, J.
, Kink, I.
, Takacs, E.
, Porto, J.
, Gillaspy, J.
, Silver, E.
, Schnopper, H.
, Bandler, S.
, Brickhouse, N.
, Murray, S.
, Barbera, M.
, Bhatia, A.
, Doschek, G.
, Madden, N.
, Landis, D.
, Beeman, J.
and Haller, E.
(2000),
Emission-Line Intensity Ratios in FeXVII Observed with a Microcalorimeter on an Electron Beam Ion Trap, Astrophysical Journal
(Accessed October 12, 2025)