Long-Lasting Phosphorescence in BaSi[sub 2]O[sub 2]N[sub 2]:Eu[sup 2+] and Ba[sub 2]SiO[sub 4]:Eu[sup 2+] Phases for X-Ray and Cathode Ray Tubes

2010 ◽  
Vol 157 (2) ◽  
pp. H178 ◽  
Author(s):  
Meiyuan Wang ◽  
Xia Zhang ◽  
Zhendong Hao ◽  
Xinguang Ren ◽  
Yongshi Luo ◽  
...  
Keyword(s):  
X Ray ◽  
Cathode Ray Tubes

Color tunable phosphorescence in KY3F10:Tb3+ for x-ray or cathode-ray tubes

2009 ◽  
Vol 106 (3) ◽  
pp. 034915 ◽  
Author(s):  
Jinsu Zhang ◽  
Zhendong Hao ◽  
Xia Zhang ◽  
Yongshi Luo ◽  
Xingguang Ren ◽  
...  
Keyword(s):  
X Ray ◽  
Cathode Ray Tubes ◽  
Color Tunable

Reddish Orange Long-Lasting Phosphorescence in KY 3 F 10 :Sm 3+ for X-Ray or Cathode Ray Tubes

2012 ◽  
Vol 29 (1) ◽  
pp. 017101 ◽  
Author(s):  
Jin-Su Zhang ◽  
Hai-Yang Zhong ◽  
Jia-Shi Sun ◽  
Li-Hong Cheng ◽  
Xiang-Ping Li ◽  
...  
Keyword(s):  
X Ray ◽  
Cathode Ray Tubes ◽  
Reddish Orange

X-Ray and Cathode Ray Tubes in the Service of Biology

Radiology ◽  
1934 ◽  
Vol 22 (3) ◽  
pp. 330-333 ◽  
Author(s):  
C. P. Haskins ◽  
C. N. Moore
Keyword(s):  
X Ray ◽  
Cathode Ray Tubes

Utilization of recycled cathode ray tubes glass in cement mortar for X-ray radiation-shielding applications

2012 ◽  
Vol 199-200 ◽  
pp. 321-327 ◽  
Author(s):  
Tung-Chai Ling ◽  
Chi-Sun Poon ◽  
Wai-Shung Lam ◽  
Tai-Po Chan ◽  
Karl Ka-Lok Fung
Keyword(s):  
Cement Mortar ◽  
Radiation Shielding ◽  
X Ray ◽  
Cathode Ray Tubes

Enhanced phosphorescence in N contained Ba2SiO4:Eu2+ for X-ray and cathode ray tubes

2010 ◽  
Vol 32 (9) ◽  
pp. 1042-1045 ◽  
Author(s):  
Meiyuan Wang ◽  
Xia Zhang ◽  
Zhendong Hao ◽  
Xinguang Ren ◽  
Yongshi Luo ◽  
...  
Keyword(s):  
X Ray ◽  
Cathode Ray Tubes

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.

White-Light Coronal Structures: Streamers and CMEs

1994 ◽  
Vol 144 ◽  
pp. 82
Author(s):  
E. Hildner
Keyword(s):  
Emission Line ◽  
Electron Density ◽  
White Light ◽  
Coronal Mass Ejections ◽  
X Rays ◽  
Solar Cycles ◽  
Temperature Function ◽  
X Ray ◽  
Eclipse Observations ◽  
Coronal Structures

AbstractOver the last twenty years, orbiting coronagraphs have vastly increased the amount of observational material for the whitelight corona. Spanning almost two solar cycles, and augmented by ground-based K-coronameter, emission-line, and eclipse observations, these data allow us to assess,inter alia: the typical and atypical behavior of the corona; how the corona evolves on time scales from minutes to a decade; and (in some respects) the relation between photospheric, coronal, and interplanetary features. This talk will review recent results on these three topics. A remark or two will attempt to relate the whitelight corona between 1.5 and 6 R⊙to the corona seen at lower altitudes in soft X-rays (e.g., with Yohkoh). The whitelight emission depends only on integrated electron density independent of temperature, whereas the soft X-ray emission depends upon the integral of electron density squared times a temperature function. The properties of coronal mass ejections (CMEs) will be reviewed briefly and their relationships to other solar and interplanetary phenomena will be noted.

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