scholarly journals Laser power density dependence on charge state distribution of Ta ion laser plasma

2020 ◽  
Vol 91 (1) ◽  
pp. 013325
Author(s):  
Masahiro Okamura ◽  
Andrew Tamis ◽  
Tommy Whelan ◽  
Takeshi Kanesue ◽  
Shunsuke Ikeda ◽  
...  
Keyword(s):  
Density Dependence ◽  
Charge State ◽  
Power Density ◽  
Laser Plasma ◽  
Laser Power ◽  
Charge State Distribution ◽  
Laser Power Density ◽  
State Distribution ◽  
Ion Laser

Dynamic characteristics of multi-charged ions emitted from nanosecond laser produced molybdenum plasmas

2020 ◽  
Vol 35 (4) ◽  
pp. 767-775 ◽  
Author(s):  
Ding Wu ◽  
Xianglei Mao ◽  
George C.-Y. Chan ◽  
Richard E. Russo ◽  
Vassilia Zorba ◽  
...  
Keyword(s):  
Charge State ◽  
Dynamic Characteristics ◽  
Laser Power ◽  
Temporal Evolution ◽  
Charge State Distribution ◽  
Nanosecond Laser ◽  
State Distribution ◽  
Power Densities ◽  
Charged Ions

The charge state distribution and temporal evolution of laser-produced molybdenum plasma were investigated at various laser power densities.

scholarly journals Influence of Saturation Phenomena on Laser-Excited Atomic Fluorescence Flame Spectrometry

1973 ◽  
Vol 28 (2) ◽  
pp. 273-279
Author(s):  
J. Kühl ◽  
S. Neumann ◽  
M. Kriese
Keyword(s):  
Power Density ◽  
Laser Power ◽  
Atomic Emission ◽  
Equation Model ◽  
Laser Power Density ◽  
Atomic Level ◽  
Dye Laser ◽  
Atomic Fluorescence ◽  
Emission Flame ◽  
Flame Spectrometry

Using a simple rate equation model, the laser power density Ic necessary to reach 50% of the saturation limited population of the excited atomic level under typical flame conditions is calculated. For Na atoms aspirated into the flame a saturating power density for irradiation with a narrow dye laser line (bandwidth 0.033 Å) of Ic ~ 0.4 kW/cm2 was determined. With the aid of a dye laser with an appropriate laser power density, analytical curves for Na were measured yielding a detection limit of 0.2 ng/ml. This sensitivity is comparable with the best results obtained by atomic emission flame spectrometry.

Layer-by-layer analysis of charge state distribution of field evaporated ions from the W(011) plane

1984 ◽  
Vol 140 (1) ◽  
pp. L253-L258
Author(s):  
Kenji Murakami ◽  
Toshiyuki Adachi ◽  
Tsukasa Kuroda ◽  
Shogo Nakamura
Keyword(s):  
Charge State ◽  
Charge State Distribution ◽  
Layer By Layer ◽  
State Distribution ◽  
Layer Analysis

Experimental Study on Testing Ni-Containing Stainless Steel Protective Coatings by Pulsed Laser Scratching

2010 ◽  
Vol 43 ◽  
pp. 651-656
Author(s):  
Ai Xin Feng ◽  
Yu Peng Cao ◽  
Chuan Chao Xu ◽  
Huai Yang Sun ◽  
Gui Fen Ni ◽  
...  
Keyword(s):  
Residual Stress ◽  
Stainless Steel ◽  
Power Density ◽  
Laser Power ◽  
Protective Coatings ◽  
Three Dimensional ◽  
Pulsed Laser ◽  
Laser Power Density ◽  
The Matrix ◽  
The Impact

In the experiment, we use pulsed laser to conduct discrete scratching on Ni-containing stainless steel protective coatings to test residual stress situation after the matrix is scratched; then to analyze the the impact of the impact stress wave on coating - substrate bonding strength according to the test results, finally to infer the laser power density range within which it occurs coating failure. The study shows that: after laser discrete scratching, the residual stress of the center of the laser-loaded point on matrix surface gradually reduces when the pulsed laser power density increases. The matrix produces a corresponding residual compressive stress under the laser power density reaches a certain value. The actual failure threshold values are 12.006 GW/cm2, 11.829GW/cm2 and 12.193GW/cm2 measured by the three-dimensional topography instrument testing the discrete scratch point of three groups of samples and verified by using a microscope

Numerical Simulation and Applications of a Method for Attenuating Laser Power Density

2013 ◽  
Vol 50 (2) ◽  
pp. 022201
Author(s):  
王振宝 Wang Zhenbao ◽  
冯国斌 Feng Guobin ◽  
杨鹏翎 Yang Pengling ◽  
冯刚 Feng Gang ◽  
闫燕 Yan Yan
Keyword(s):  
Numerical Simulation ◽  
Power Density ◽  
Laser Power ◽  
Laser Power Density
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