Hard X-ray nanofocusing using adaptive focusing optics based on piezoelectric deformable mirrors

2015 ◽  
Vol 86 (4) ◽  
pp. 043102 ◽  
Author(s):  
Takumi Goto ◽  
Hiroki Nakamori ◽  
Takashi Kimura ◽  
Yasuhisa Sano ◽  
Yoshiki Kohmura ◽  
...  
Keyword(s):  
Deformable Mirrors ◽  
X Ray

scholarly journals Simulating wavefront correction via deformable mirrors at x-ray beamlines

2012 ◽  
Author(s):  
Tommaso Pardini ◽  
Lisa A. Poyneer ◽  
Audrey Plinta ◽  
Jeffrey L. Cavaco ◽  
Michael J. Pivovaroff
Keyword(s):  
Deformable Mirrors ◽  
Wavefront Correction ◽  
X Ray

Deformable mirrors enable a leap forward in x-ray telescope performance

SPIE Newsroom ◽  
2013 ◽  
Author(s):  
Vincenzo Cotroneo ◽  
William N. Davis ◽  
Vanessa Marquez ◽  
Paul B. Reid ◽  
Stuart McMuldroch ◽  
...  
Keyword(s):  
Deformable Mirrors ◽  
X Ray

New scheme to control x-ray deformable mirrors

2016 ◽  
Author(s):  
Lei Huang ◽  
Mourad Idir
Keyword(s):  
Deformable Mirrors ◽  
X Ray

Deformable mirrors for x-ray astronomy and beyond

2011 ◽  
Author(s):  
M. P. Ulmer ◽  
M. E. Graham ◽  
S. Vaynman ◽  
J. Cao ◽  
P. Z. Takacs
Keyword(s):  
Deformable Mirrors ◽  
X Ray

Control x-ray deformable mirrors with few measurements

2016 ◽  
Author(s):  
Lei Huang ◽  
Junpeng Xue ◽  
Mourad Idir
Keyword(s):  
Deformable Mirrors ◽  
X Ray

scholarly journals Nearly diffraction-limited X-ray focusing with variable-numerical-aperture focusing optical system based on four deformable mirrors

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Satoshi Matsuyama ◽  
Hiroki Nakamori ◽  
Takumi Goto ◽  
Takashi Kimura ◽  
Krishna P. Khakurel ◽  
...  
Keyword(s):  
Optical System ◽  
Numerical Aperture ◽  
Deformable Mirrors ◽  
X Ray

Size-changeable x-ray beam collimation using an adaptive x-ray optical system based on four deformable mirrors

2016 ◽  
Author(s):  
T. Goto ◽  
S. Matsuyama ◽  
H. Nakamori ◽  
H. Hayashi ◽  
Y. Sano ◽  
...  
Keyword(s):  
Optical System ◽  
Deformable Mirrors ◽  
X Ray ◽  
Beam Collimation

Space and Time Distribution of Hard X-Ray Emission in a Loop at the Beginning of a Flare

1994 ◽  
Vol 144 ◽  
pp. 275-277
Author(s):  
M. Karlický ◽  
J. C. Hénoux
Keyword(s):  
Time Distribution ◽  
Electron Bombardment ◽  
Spatial Evolution ◽  
Superthermal Electrons ◽  
Flare Loop ◽  
X Ray ◽  
Superthermal Electron ◽  
Flare Loops ◽  
Chromospheric Evaporation ◽  
Temporal And Spatial

AbstractUsing a new ID hybrid model of the electron bombardment in flare loops, we study not only the evolution of densities, plasma velocities and temperatures in the loop, but also the temporal and spatial evolution of hard X-ray emission. In the present paper a continuous bombardment by electrons isotropically accelerated at the top of flare loop with a power-law injection distribution function is considered. The computations include the effects of the return-current that reduces significantly the depth of the chromospheric layer which is evaporated. The present modelling is made with superthermal electron parameters corresponding to the classical resistivity regime for an input energy flux of superthermal electrons of 109erg cm−2s−1. It was found that due to the electron bombardment the two chromospheric evaporation waves are generated at both feet of the loop and they propagate up to the top, where they collide and cause temporary density and hard X-ray enhancements.

Some Problems in Understanding the Solar Corona

1994 ◽  
Vol 144 ◽  
pp. 1-9
Author(s):  
A. H. Gabriel
Keyword(s):  
Solar Corona ◽  
Solar Atmosphere ◽  
Theoretical Modelling ◽  
Total System ◽  
Major Advance ◽  
X Ray ◽  
Proper Perspective ◽  
Space Observations

The development of the physics of the solar atmosphere during the last 50 years has been greatly influenced by the increasing capability of observations made from space. Access to images and spectra of the hotter plasma in the UV, XUV and X-ray regions provided a major advance over the few coronal forbidden lines seen in the visible and enabled the cooler chromospheric and photospheric plasma to be seen in its proper perspective, as part of a total system. In this way space observations have stimulated new and important advances, not only in space but also in ground-based observations and theoretical modelling, so that today we find a well-balanced harmony between the three techniques.

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