Structure and dynamics of a solar flare - X-ray and XUV observations

1977 ◽  
Vol 217 ◽  
pp. 976 ◽  
Author(s):  
K. P. Dere ◽  
D. M. Horan ◽  
R. W. Kreplin
Keyword(s):  
Solar Flare ◽  
X Ray ◽  
Structure And Dynamics

scholarly journals Local Structure and Dynamics of Functional Materials Studied by X-ray Absorption Fine Structure

Symmetry ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1315
Author(s):  
Takafumi Miyanaga
Keyword(s):  
Fine Structure ◽  
Local Structure ◽  
Chemical Reactivity ◽  
Functional Materials ◽  
X Ray ◽  
Structure And Dynamics ◽  
Absorption Fine ◽  
Structure Phase Transition ◽  
Local Electronic Structure ◽  
X Ray Absorption

X-ray absorption fine structure (XAFS) is a powerful technique used to analyze a local electronic structure, local atomic structure, and structural dynamics. In this review, I present examples of XAFS that apply to the local structure and dynamics of functional materials: (1) structure phase transition in perovskite PbTiO3 and magnetic FeRhPd alloys; (2) nano-scaled fluctuations related to their magnetic properties in Ni–Mn alloys and Fe/Cr thin films; and (3) the Debye–Waller factors related to the chemical reactivity for catalysis in polyanions and ligand exchange reaction. This study shows that the local structure and dynamics are related to the characteristic function of the materials.

Structure and dynamics of 1,4-dioxane-water binary solutions studied by X-ray diffraction, mass spectrometry, and NMR relaxation

1999 ◽  
Vol 83 (1-3) ◽  
pp. 163-177 ◽  
Author(s):  
Toshiyuki Takamuku ◽  
Atsushi Yamaguchi ◽  
Masaaki Tabata ◽  
Nobuyuki Nishi ◽  
Koji Yoshida ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Nmr Relaxation ◽  
X Ray Diffraction ◽  
Binary Solutions ◽  
X Ray ◽  
Structure And Dynamics

Diagnostics of solar flare hard X-ray sources

Solar Physics ◽  
1978 ◽  
Vol 58 (1) ◽  
pp. 139-148 ◽  
Author(s):  
Peter Hoyng ◽  
Joshua W. Knight ◽  
Daniel S. Spicer
Keyword(s):  
Solar Flare ◽  
X Ray

scholarly journals Using the maximum X-ray flux ratio and X-ray background to predict solar flare class

Space Weather ◽  
2015 ◽  
Vol 13 (5) ◽  
pp. 286-297 ◽  
Author(s):  
L. M. Winter ◽  
K. Balasubramaniam
Keyword(s):  
Solar Flare ◽  
Flux Ratio ◽  
X Ray ◽  
X Ray Background

scholarly journals Electron Bremsstrahlung Hard X-Ray Spectra, Electron Distributions, and Energetics in the 2002 July 23 Solar Flare

2003 ◽  
Vol 595 (2) ◽  
pp. L97-L101 ◽  
Author(s):  
Gordon D. Holman ◽  
Linhui Sui ◽  
Richard A. Schwartz ◽  
A. Gordon Emslie
Keyword(s):  
Solar Flare ◽  
X Ray ◽  
Electron Bremsstrahlung ◽  
Electron Distributions

Polychromatic X-ray microdiffraction studies of mesoscale structure and dynamics

2005 ◽  
Vol 12 (2) ◽  
pp. 155-162 ◽  
Author(s):  
G. E. Ice ◽  
B. C. Larson ◽  
W. Yang ◽  
J. D. Budai ◽  
J. Z. Tischler ◽  
...  
Keyword(s):  
X Ray ◽  
Structure And Dynamics ◽  
Mesoscale Structure

Correlations of solar-flare electron events with radio and X-ray emission from the sun

1968 ◽  
Vol 46 (10) ◽  
pp. S757-S760 ◽  
Author(s):  
R. P. Lin
Keyword(s):  
Solar Flare ◽  
Solar Radio ◽  
Interplanetary Space ◽  
The Sun ◽  
Radio Bursts ◽  
Radio Observations ◽  
X Ray ◽  
Type Iii ◽  
Electron Event ◽  
Burst Emission

The > 40-keV solar-flare electrons observed by the IMP III and Mariner IV satellites are shown to be closely correlated with solar radio and X-ray burst emission. In particular, intense type III radio bursts are observed to accompany solar electron-event flares. The energies of the electrons, the total number of electrons, and the size of the electron source at the sun can be inferred from radio observations. The characteristics of the electrons observed in interplanetary space are consistent with these radio observations. Therefore these electrons are identified as the exciting agents of the type III emission. It has been noted that the radio and X-ray bursts are part of the flash phase of flares. The observations indicate that a striking feature of the flash phase is the production of electrons of 10–100 keV energies.

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