Development of a numerically controlled elastic emission machining system for fabricating mandrels of ellipsoidal focusing mirrors used in soft x-ray microscopy

2013 ◽  
Author(s):  
Yoshinori Takei ◽  
Takehiro Kume ◽  
Hiroto Motoyama ◽  
Kentaro Hiraguri ◽  
Hirokazu Hashizume ◽  
...  
Keyword(s):  
X Ray ◽  
Machining System ◽  
Elastic Emission Machining

scholarly journals Development of Numerically Controlled EEM (Elastic Emission Machining) System. Evaluation of Figuring Accuracy with the Range of Nanometer.

2001 ◽  
Vol 67 (4) ◽  
pp. 607-612 ◽  
Author(s):  
Yuzo MORI ◽  
Kazuto YAMAUCHI ◽  
Kazuhisa SUGIYAMA ◽  
Kouji INAGAKI ◽  
Hidekazu MIMURA ◽  
...  
Keyword(s):  
System Evaluation ◽  
Machining System ◽  
Elastic Emission Machining

Development of organic abrasive machining system for fabricating soft x-ray ellipsoidal mirrors

2019 ◽  
Author(s):  
Yusuke Matsuzawa ◽  
Shunya Yokomae ◽  
Jianli Guo ◽  
Kentaro Hiraguri ◽  
Hirokazu Hashizume ◽  
...  
Keyword(s):  
Abrasive Machining ◽  
X Ray ◽  
Machining System

Development of plasma chemical vaporization machining and elastic emission machining systems for coherent x-ray optics

2001 ◽  
Author(s):  
Yuzo Mori ◽  
Y. Yamauchi ◽  
Kazuya Yamamura ◽  
Hidekazu Mimura ◽  
A. Saito ◽  
...  
Keyword(s):  
Plasma Chemical ◽  
Ray Optics ◽  
X Ray ◽  
Elastic Emission Machining

Numerically Controlled EEM (Elastic Emission Machining) System for Ultraprecision Figuring and Smoothing of Aspherical Surfaces

2004 ◽  
pp. 607-620 ◽  
Author(s):  
Yuzo Mori ◽  
Kazuto Yamauchi ◽  
Kikuji Hirose ◽  
Kazuhisa Sugiyama ◽  
Kohji Inagaki ◽  
...  
Keyword(s):  
Machining System ◽  
Elastic Emission Machining

Recent development in Kirkpatrick–Baez focusing systems at the ESRF

2011 ◽  
Vol 1 (MEDSI-6) ◽  
Author(s):  
R. Baker ◽  
R. Barrett ◽  
Y. Dabin ◽  
J. Gregoire ◽  
G. Malandrino ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
High Efficiency ◽  
Ion Beam ◽  
European Synchrotron Radiation Facility ◽  
X Ray ◽  
Beam Focusing ◽  
The Past ◽  
Recent Developments ◽  
Elastic Emission Machining ◽  
Ion Beam Figuring

European Synchrotron Radiation Facility (ESRF) in-house designed Kirkpatrick–Baez (KB) focusing systems have been extensively used for high efficiency beam focusing over the past years. More recently however, increasing interest in nanofocusing techniques has directed our development efforts towards more compact, higher stability designs for dynamic focusing systems in which the optimization of numerous parameters enables mirror bending approaching its mechanical limits. Simultaneously, progress in fixed focus mirror fabrication techniques – notably ion beam figuring, differential deposition and elastic emission machining – now make the fabrication of highly elliptical, fixed focus X-ray optics an interesting option. This has simplified conception (no bending mechanics) which in turn has led to the design of miniaturized KBs.A general overview of these recent developments in both dynamic bending and fixed focus KB systems is presented.

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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