scispace - formally typeset
J

J. Lang

Researcher at Rutherford Appleton Laboratory

Publications -  52
Citations -  4459

J. Lang is an academic researcher from Rutherford Appleton Laboratory. The author has contributed to research in topics: Solar flare & Spectrometer. The author has an hindex of 20, co-authored 51 publications receiving 4129 citations. Previous affiliations of J. Lang include Max Planck Society.

Papers
More filters
Journal Article

Structure and dynamics of an active region loop system observed on the solar disc with SUMER on SOHO

TL;DR: In this paper, the authors presented and discussed spectra obtained by SUMER on SOHO from an active region loop system ob- served on the solar disc, close to the central meridian, on July 26th, 1996.
Journal ArticleDOI

On the dependence of solar flare X-ray spectral line intensity ratios of highly ionized sulfur, calcium, and iron on electron temperature, differential emission measure, and atomic physics

TL;DR: In this paper, the spectral lines of highly ionized ions of sulfur, calcium, and iron that appear in solar flare spectra were used to determine the electron temperature independently of the assumption of ionization equilibrium, and an attempt was made to find emission measure models based on selected functional dependences of emission measure on temperature.
Journal ArticleDOI

Transitions between the n = 2 and n = 3 levels of Ne VII in the solar spectrum

TL;DR: Theoretical populations of the 2s3l levels of the solar spectrum for electron temperatures from 2.5 × 105 K to 4 × 106 K and electron densities from 108 cm −3 to 1012 cm−3 were presented in this article, in conjunction with intensities of previously observed solar Ne vii lines and wavelengths and intensities observed in the laboratory.
Journal ArticleDOI

Evidence for the equality of the solar photospheric and coronal abundance of iron

TL;DR: The Fe K-alpha and K-beta X-ray lines (wavelengths 1.94 and 1.76 A) are formed by fluoroescence of photospheric iron atoms, and the ratio of the intensity of either to the He-like iron (Fe XXV) resonance line at 1.85 A is a function of the photosphereto-coronal abundance of iron.