All-optical laser spectral narrowing and line fixing at atomic absorption transition by injection competition and gain knock-down techniques

2008 ◽  
Author(s):  
Lazarina I. Gacheva ◽  
Margarita A. Deneva ◽  
Mihail H. Kalbanov ◽  
Marin N. Nenchev
Keyword(s):  
Atomic Absorption ◽  
Knock Down ◽  
Spectral Narrowing ◽  
All Optical ◽  
Optical Laser

On all-optical laser cleaning and inspection of contaminated concave metal surfaces

2000 ◽  
Vol 33 (4) ◽  
pp. 311-315 ◽  
Author(s):  
Ville Hyvärinen ◽  
Mika Sorjonen ◽  
Kai-Erik Peiponen ◽  
Raimo Silvennoinen ◽  
Tapani Niskanen ◽  
...  
Keyword(s):  
Metal Surfaces ◽  
Laser Cleaning ◽  
All Optical ◽  
Optical Laser

scholarly journals Vertical Zinc Migration in Various Soil Types

2011 ◽  
Vol 57 (2) ◽  
pp. 61-67
Author(s):  
Ladislav Lahučký ◽  
Daniel Bajčan ◽  
Pavol Trebichalský
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Zinc Content ◽  
Absorption Spectrometry ◽  
Soil Samples ◽  
Soil Types ◽  
Spectrometry Method ◽  
Limit Values ◽  
Knock Down ◽  
Limit Value

Vertical Zinc Migration in Various Soil TypesIn this contribution the zinc content in selected soil types and soil reaction on zinc loading in kinetic model conditions with knock-down columns filled with soil samples are evaluated. The total zinc content after their draining, finish and decomposition by HF + HClO4mixture and its fractions content in extract of 2 mol dm-3HNO3, in extract of 0.05 mol dm-3EDTA and in extract of 0.01 mol dm-3CaCl2using atomic absorption spectrometry method were determined.The knock-down columns filled with soil samples in model kinetic conditions were used for observation of zinc sorption measure. The maximal water capacity of soils was determined and then solution of 280 mg zinc (ZnSO4.2H2O) per kilogram of soil was applied. The zinc contents in extraction solutions 2 mol dm-3HNO3, 0.05 mol dm-3EDTA and 0.01 mol dm-3CaCl2in drained 0.05 m high soil columns by atomic absorption spectrometry method were determined.The obtained results were evaluated by mathematical-statistical methods - multiple range analysis and linear regression. Achieved data were compared to allowed limit values.The results show different behavior of individual soil types against zinc loading. The soils showed different properties, where zinc migration to the lower column layers was determined. The accent is given to zinc dynamics in neutral and acid soils. The limit value A (140 mg kg-1) was observed in Luvic Cambisol. The limit value A1 (40 mg kg-1) was observed in Eutric Regosol and Luvic Cambisol in upper layer of soil in column. The obtained results show high mobility of zinc in tested soils and thus its risk for ecosystems.

First demonstration of a staged all-optical laser wakefield acceleration

2005 ◽  
Vol 12 (10) ◽  
pp. 100702 ◽  
Author(s):  
D. Kaganovich ◽  
A. Ting ◽  
D. F. Gordon ◽  
R. F. Hubbard ◽  
T. G. Jones ◽  
...  
Keyword(s):  
Laser Wakefield Acceleration ◽  
Wakefield Acceleration ◽  
All Optical ◽  
Laser Wakefield ◽  
Optical Laser
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