Influence of the Thickness and Absorption Coefficient of a Copper Oxide Film on the Ignition Delay of PENT by a Laser Pulse

2016 ◽  
Vol 52 (1) ◽  
Keyword(s):  
Laser Pulse ◽  
Oxide Film ◽  
Absorption Coefficient ◽  
Copper Oxide ◽  
Ignition Delay

Ignition of Organic Explosive Materials by a Copper Oxide Film Absorbing a Laser Pulse

2018 ◽  
Vol 43 (10) ◽  
pp. 992-998 ◽  
Author(s):  
Vadim Dolgachev ◽  
Alexander Khaneft ◽  
Anatoly Mitrofanov
Keyword(s):  
Laser Pulse ◽  
Oxide Film ◽  
Copper Oxide ◽  
Explosive Materials

Two-Temperature Generalized Thermo-Elastic Medium Thermally Excited by Time Exponentially Decaying Laser Pulse

2016 ◽  
Vol 16 (03) ◽  
pp. 1450102 ◽  
Author(s):  
Hamdy M. Youssef ◽  
A. A. El-Bary
Keyword(s):  
Laser Pulse ◽  
Absorption Coefficient ◽  
Transformation Method ◽  
State Space Approach ◽  
Closed Form Solutions ◽  
Riemann Sum ◽  
Temperature Parameter ◽  
Laplace Transformation Method ◽  
Two Temperature ◽  
Space Approach

This paper deals with a two-temperature thermoelastic material subjected to a laser heating pulse as the heat source. Closed form solutions for the temperature and stress fields due to time exponentially decaying laser pulse are presented using the state-space approach. The Laplace transformation method is employed in deriving the governing equations. The inversion of Laplace transform is obtained numerically by using the Riemann-sum approximation method. The results have been presented in figures to show the effect of the time exponentially decaying laser pulse, the two-temperature parameter and the absorption coefficient on all the fields studied. The results show that the two-temperature parameter and the absorption coefficient parameter have significant effects on all the field parameters studied.

scholarly journals The cause of the colours shown during the oxidation of metallic copper

1927 ◽  
Vol 115 (772) ◽  
pp. 570-588 ◽  
Keyword(s):  
Thin Films ◽  
Oxide Film ◽  
Copper Oxide ◽  
Cupric Oxide ◽  
Metallic Copper ◽  
Oxide Films ◽  
Copper Surface ◽  
Considerable Time ◽  
Pass Through

During the initial stages of the oxidation of a clean metallic copper surface, and before the normal black colour of cupric oxide is finally attained, bright colours appear which pass through the first and second orders of the series of colours observed and tabulated by Newton as characteristic of thin films of air of increasing thickness. These facts have been known for a considerable time, but though the interference colours of thin films of air and those of the oxide film are produced in the same order, grave doubts have existed as to whether interference was the cause of the colours shown by the copper. This problem has been approached from measurements of the intensity of the light reflected from copper oxide films of known thickness, and the results show that interference is actually the cause of the production of the colour, though the result is complicated by the opacity of the film, the dispersion of the oxide, and the scattering of the light complementary to the film colour when the metal is burnished.

Absorption coefficient for nanosecond laser pulse in porous material

2015 ◽  
Vol 57 (12) ◽  
pp. 125004 ◽  
Author(s):  
S Yu Gus’kov ◽  
M Cipriani ◽  
R De Angelis ◽  
F Consoli ◽  
A A Rupasov ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Porous Material ◽  
Absorption Coefficient ◽  
Nanosecond Laser Pulse ◽  
Nanosecond Laser

Raman and Optical Properties of the Pulsed Laser Annealing Phase of SI

1981 ◽  
Vol 4 ◽  
Author(s):  
A. Compaan ◽  
A. Aydinli ◽  
M. C. Lee ◽  
H. W. LO
Keyword(s):  
Optical Properties ◽  
Laser Pulse ◽  
Absorption Coefficient ◽  
Laser Annealing ◽  
Pulsed Laser ◽  
Experimental Tests ◽  
Small Temperature ◽  
Pulsed Laser Annealing ◽  
Near Ir ◽  
Transmission Measurements

ABSTRACTRaman measurements of temperature reported earlier have been repeated using a doubled Nd: YAG pulse for excitation and an electronically delayed dye laser pulse. These results, together with a variety of experimental tests of the Raman method, confirm the validity of the small temperature rise during pulsed laser annealing. Transmission measurements spanning the visible and near IR show that there exists a thin (∼ 70 nm) layer at the surface in which the induced absorption coefficient is ∼ 7 × 105 cm−1.

scholarly journals Fabrication of Copper Oxide Film by Electroless Process and Possibility for Sugar Analysis

1998 ◽  
Vol 66 (8) ◽  
pp. 854-855
Author(s):  
Hiroshi MATSUBARA ◽  
Tetsuya KONDO ◽  
Kazunori HODOUCHI ◽  
Akifumi YAMADA
Keyword(s):  
Oxide Film ◽  
Copper Oxide ◽  
Sugar Analysis ◽  
Electroless Process

scholarly journals Highly effective electrochemical water oxidation by copper oxide film generated in situ from Cu(II) tricine complex

2018 ◽  
Vol 39 (3) ◽  
pp. 479-486 ◽  
Author(s):  
Yan Gao ◽  
Hu Chen ◽  
Lu Ye ◽  
Zhongkai Lu ◽  
Yanan Yao ◽  
...  
Keyword(s):  
Oxide Film ◽  
Copper Oxide ◽  
Water Oxidation ◽  
Highly Effective
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