Non-thermal and non-equilibrium effects in soft X-ray flare spectra

Solar Physics ◽  
1983 ◽  
Vol 86 (1-2) ◽  
pp. 59-66 ◽  
Author(s):  
A. H. Gabriel ◽  
E. Antonucci ◽  
L. Steenman-Clark
Keyword(s):  
X Ray ◽  
Non Equilibrium

scholarly journals NON-EQUILIBRIUM MODELING OF THE FE XVII 3C/3D LINE RATIO IN AN INTENSE X-RAY FREE-ELECTRON LASER EXCITED PLASMA

2015 ◽  
Vol 801 (1) ◽  
pp. L13 ◽  
Author(s):  
S. D. Loch ◽  
C. P. Ballance ◽  
Y. Li ◽  
M. Fogle ◽  
C. J. Fontes
Keyword(s):  
Free Electron ◽  
Free Electron Laser ◽  
Line Ratio ◽  
Equilibrium Modeling ◽  
X Ray ◽  
Non Equilibrium

scholarly journals Non-Equilibrium Ionization in Puppis A

1983 ◽  
Vol 101 ◽  
pp. 245-252
Author(s):  
P. F. Winkler ◽  
C. R. Canizares ◽  
B. C. Bromley
Keyword(s):  
High Resolution ◽  
Spectroscopic Data ◽  
Supernova Remnant ◽  
Optical Data ◽  
Equilibrium Conditions ◽  
X Ray ◽  
Flux Measurements ◽  
Far From Equilibrium ◽  
Einstein Observatory ◽  
Non Equilibrium

High resolution X-ray spectroscopy of the brightest knot of emission in the Puppis A supernova remnant shows that it is made up of ionizing plasma, far from equilibrium. Flux measurements in several X-ray lines enable us to determine the non-equilibrium conditions: electron temperature, ion populations, and time since the knot was heated by the supernova shock. Imaging and spectroscopic data from the Einstein Observatory together suggest that this knot is a cloud of density about 10 cm−3 which has recently been shocked to a temperature 7 × 106 K. Radio and optical data on the region appear consistent with this picture.

Two crystal modifications for the product of the acetylation of 2-N-(2-fluorophenyl)iminocoumarin-3-carboxamide

1999 ◽  
Vol 214 (9) ◽  
Author(s):  
S. N. Kovalenko ◽  
V. N. Baumer ◽  
S. V. RusanovaI ◽  
V. P. Chernykh
Keyword(s):  
Structure Analysis ◽  
Title Compound ◽  
X Ray ◽  
Crystal Modifications ◽  
Non Equilibrium

AbstractThe title compound forms two kinds of crystals, depending on conditions of crystallisation. Both crystal modifications of the title compound were investigated by X-ray structure analysis and non-valence interactions calculations. It is found that the ‘fast non-equilibrium crystallised’ modification (

scholarly journals Non-equilibrium x-ray spectroscopy using direct quantum dynamics

2018 ◽  
Vol 149 (12) ◽  
pp. 124107 ◽  
Author(s):  
T. Northey ◽  
J. Duffield ◽  
T. J. Penfold
Keyword(s):  
Quantum Dynamics ◽  
X Ray ◽  
Non Equilibrium

scholarly journals Non-Equilibrium Thermal X-Ray Emission in the Early Phase of Supernova Remnant

1989 ◽  
Vol 8 ◽  
pp. 217-221
Author(s):  
Hitoshi Hanami ◽  
Tatsuo Yoshida
Keyword(s):  
Early Phase ◽  
Supernova Remnant ◽  
Circumstellar Matter ◽  
Temperature Model ◽  
X Ray ◽  
Two Temperature ◽  
Non Equilibrium

AbstractThe X-ray emission from the interaction of the ejecta with circumstellar matter (CSM) for SN1987A is investigated. The electron and the ion temperatures seem to be in non-equilibrium in the early phase of a SN remnant. We have studied the two-temperature model in the early phase of SNR and discuss the X-ray emission from SN1987A and its CSM.

scholarly journals Non-equilibrium processes in martensitic phase transformations by X-ray photon correlation spectroscopy

2015 ◽  
Vol 1754 ◽  
pp. 141-146
Author(s):  
Michael Widera ◽  
Uwe Klemradt
Keyword(s):  
Photon Correlation Spectroscopy ◽  
Time Correlation ◽  
Correlation Spectroscopy ◽  
X Rays ◽  
Photon Correlation ◽  
X Ray ◽  
Equilibrium Dynamics ◽  
Speckle Patterns ◽  
Martensitic Phase Transformations ◽  
Non Equilibrium

ABSTRACTThrough undulator sources at 3rd generation synchrotrons, highly coherent X-rays with sufficient flux are nowadays routinely available, which allow carrying over photon correlation spectroscopy (PCS) from visible light to the X-ray regime. X-ray photon correlation spectroscopy (XPCS) is based on the auto-correlation of X-ray speckle patterns during the temporal evolution of a material and provides access both to equilibrium and non-equilibrium properties of materials at the Angstrom scale. Owing to technical limitations (detector readout), XPCS has typically been used for the detection of slow dynamics on the scale of seconds. The variety of scattering geometries employed in conventional X-ray analysis can be combined with XPCS. In this work, we report on bulk diffraction (XRD) used to study the prototypical shape memory alloy Ni63Al37 undergoing a structural, diffusionless (martensitic) transformation. Two-time correlation functions reveal non-equilibrium dynamics superimposed with microstructural avalanches.

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