Scattering of laser radiation at the heating of low density foam targets

1997 ◽  
Author(s):  
S. Yu. Guskov ◽  
Yu. S. Kas’anov ◽  
M. O. Koshevoi ◽  
V. B. Rozanov ◽  
A. A. Rupasov ◽  
...  
Keyword(s):  
Laser Radiation ◽  
Low Density

Laser-radiation volume absorber and x-ray converter based on low-density beryllium

2001 ◽  
Author(s):  
N. G. Borisenko ◽  
Vladimir V. Gorlevsky ◽  
A. I. Gromov ◽  
Sergei Y. Gus'kov ◽  
Valeriy M. Dorogotovtsev ◽  
...  
Keyword(s):  
Laser Radiation ◽  
Low Density ◽  
X Ray

Optical emission of a plasma from low-density targets irradiated with coherence-controllable laser radiation

2017 ◽  
Vol 47 (2) ◽  
pp. 101-105 ◽  
Author(s):  
A A Fronya ◽  
N G Borisenko ◽  
V N Puzyrev ◽  
A T Sahakyan ◽  
A N Starodub ◽  
...  
Keyword(s):  
Laser Radiation ◽  
Optical Emission ◽  
Low Density

Interaction of laser radiation with a low-density structured absorber

2016 ◽  
Vol 122 (2) ◽  
pp. 256-276 ◽  
Author(s):  
V. B. Rozanov ◽  
D. V. Barishpol’tsev ◽  
G. A. Vergunova ◽  
N. N. Demchenko ◽  
E. M. Ivanov ◽  
...  
Keyword(s):  
Laser Radiation ◽  
Low Density

A Mechanistic Study of the Interaction of Ultraviolet Laser Radiation with Low Density Polymers

1986 ◽  
Vol 75 ◽  
Author(s):  
Philip J. Hargis
Keyword(s):  
Laser Radiation ◽  
Laser Fluence ◽  
Emission Spectra ◽  
Mechanistic Study ◽  
Etch Depth ◽  
Low Density ◽  
Foam Density ◽  
Absorption Mechanism ◽  
Linear Absorption ◽  
Ultraviolet Laser

AbstractUltraviolet laser radiation at 248 nm and 266 nm was used to ablate low density (0.04 to 0.14 g/cm3) microcellular polystyrene and TPX foams at laser fluences between 0.1 and 1000 J/cm2, The dependence of the etch rate on laser fluence and foam density is consistent with a linear absorption mechanism for the initial stages of polystyrene ablation. Studies of the morphology and chemical composition of the ablated foams as a function of laser fluence and foam density show that the degree of melting increases at the higher foam densities. Blackbody and radical specie contributions to optical emission from the ablated foam were readily resolved for correlation with laser fluence, foam density, absorption spectra, and etch depth. Temperatures in excess of 3000 °K are calculated from emission spectra observed during the ablation of polystyrene foams. From this data we conclude that chemical and thermal changes in the ablated foam are influenced by the absorption spectrum as well as the density of the foam.

Absorption and scattering of high-power laser radiation in low-density porous media

1999 ◽  
Vol 88 (3) ◽  
pp. 441-448 ◽  
Author(s):  
A. É. Bugrov ◽  
S. Yu. Gus’kov ◽  
V. B. Rozanov ◽  
I. N. Burdonskii ◽  
V. V. Gavrilov ◽  
...  
Keyword(s):  
Porous Media ◽  
Laser Radiation ◽  
High Power ◽  
Low Density ◽  
High Power Laser ◽  
Power Laser ◽  
High Power Laser Radiation

Interaction of high-power laser radiation with low-density polymer aerogels

2017 ◽  
Vol 47 (6) ◽  
pp. 495-502 ◽  
Author(s):  
Ch Kaur ◽  
Sh Chaurasia ◽  
N G Borisenko ◽  
A S Orekhov ◽  
P Leshma ◽  
...  
Keyword(s):  
Laser Radiation ◽  
High Power ◽  
Low Density ◽  
High Power Laser ◽  
Power Laser ◽  
High Power Laser Radiation

scholarly journals Scattering and transmission of laser radiation at the heating of low-density foam targets

1999 ◽  
Vol 17 (2) ◽  
pp. 287-291 ◽  
Author(s):  
S.Yu. GUS'KOV ◽  
Yu.S. KAS'ANOV ◽  
M.O. KOSHEVOI ◽  
V.B. ROZANOV ◽  
A.A. RUPASOV ◽  
...  
Keyword(s):  
Experimental Study ◽  
Laser Radiation ◽  
Laser Heating ◽  
Mass Velocity ◽  
Critical Density ◽  
Low Density

Experimental study of the radiation scattered at the laser heating of low-density foam targets and transmitted through the targets is presented. The scattered and transmitted radiations were investigated using spectrometers and streak cameras providing spatial, angular, spectral and temporal resolutions that enabled us to study the dynamics of the process of burning-through of the thick foam targets, the velocities of the plasma critical density motion as well as mass velocity of the plasma.

Scattering of laser radiation at the heating of low density foam targets

2002 ◽  
Author(s):  
S.Y. Guskov ◽  
Y.S. Kas'anov ◽  
M.O. Koshevoi ◽  
V.B. Rozanov ◽  
A.A. Rupasov ◽  
...  
Keyword(s):  
Laser Radiation ◽  
Low Density
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