scholarly journals Эмиссионные спектры молекулярных газов CHF-=SUB=-3-=/SUB=-, CCl-=SUB=-2-=/SUB=-F-=SUB=-2-=/SUB=-, SF-=SUB=-6-=/SUB=- в диапазоне 3-20 nm при импульсном лазерном возбуждении с использованием различных газовых струй в качестве мишеней

2022 ◽  
Vol 130 (2) ◽  
pp. 217
Author(s):  
В.Е. Гусева ◽  
А.Н. Нечай ◽  
А.А. Перекалов ◽  
Н.Н. Салащенко ◽  
Н.И. Чхало
Keyword(s):  
Spectral Range ◽  
Particle Concentration ◽  
Pulsed Laser ◽  
Emission Spectra ◽  
Cluster Beam ◽  
Atomic Cluster ◽  
Pulsed Laser Radiation ◽  
Laser Spark ◽  
Gas Targets ◽  
20 Nm

The article considers the results of studies of the emission spectra of CHF3, CCl2F2, SF6 upon excitation by pulsed laser radiation. We used Nd:YAG laser, λ = 1064 nm, τ = 5 ns, and Epulse = 0.8 J. The spectral range of 3-20 nm was studied. We used capillary and supersonic conical nozzles with dcrit = 145 μm, 2α = 12o, L = 5 mm, and dcrit = 450 μm, 2α = 11o, L = 5 mm to form an atomic cluster beam. The emission spectra for various gas targets were obtained, the obtained spectra were deciphered, and the ions emitting in this spectral range were determined. We observed that with increasing particle concentration in the zone of laser spark, the radiation intensity increases. In this case, the intensity of ion lines with high degrees of ionization increases faster.

scholarly journals Эмиссионные спектры легких инертных газов Ne и Ar в диапазоне 3-20 nm при импульсном лазерном возбуждении с использованием различных газовых струй в качестве мишеней

2021 ◽  
Vol 129 (2) ◽  
pp. 146
Author(s):  
А.Н. Нечай ◽  
А.А. Перекалов ◽  
Н.Н. Салащенко ◽  
Н.И. Чхало
Keyword(s):  
Spectral Range ◽  
Particle Concentration ◽  
Pulsed Laser ◽  
Emission Spectra ◽  
Cluster Beam ◽  
Atomic Cluster ◽  
Pulsed Laser Radiation ◽  
Laser Spark ◽  
Gas Targets ◽  
20 Nm

The article considers the results of studies of the emission spectra of Ne and Ar upon excitation by pulsed laser radiation. We used Nd: YAG laser, λ = 1064 nm, τ = 5 ns, and Epulse = 0.8 J. The spectral range of 3-20 nm was studied. We used capillary and supersonic conical nozzles with dcr = 145 μm, 2α = 12o, L = 5 mm, and dcr = 450 μm, 2α = 11o, L = 5 mm to form an atomic cluster beam. The emission spectra for various gas targets were obtained, the obtained spectra were deciphered, and the ions emitting in this spectral range were determined. We observed that with increasing particle concentration in the zone of laser spark, the radiation intensity increases. In this case, the intensity of ion lines with high degrees of ionization increases faster.

scholarly journals Эмиссионные спектры молекулярных газов N-=SUB=-2-=/SUB=- и CO-=SUB=-2-=/SUB=- в диапазоне 3-20 nm при импульсном лазерном возбуждении с использованием различных газовых струй в качестве мишеней

2021 ◽  
Vol 129 (6) ◽  
pp. 755
Author(s):  
А.Н. Нечай ◽  
А.А. Перекалов ◽  
Н.И. Чхало ◽  
Н.Н. Салащенко
Keyword(s):  
Spectral Range ◽  
Particle Concentration ◽  
Pulsed Laser ◽  
Emission Spectra ◽  
Cluster Beam ◽  
Atomic Cluster ◽  
Pulsed Laser Radiation ◽  
Laser Spark ◽  
Gas Targets ◽  
20 Nm

The article considers the results of studies of the emission spectra of N2 and CO2 upon excitation by pulsed laser radiation. We used Nd: YAG laser, λ = 1064 nm, τ = 5 ns, and Epulse = 0.8 J. The spectral range of 3-20 nm was studied. We used capillary and supersonic conical nozzles with dcr = 145 μm, 2α = 12o, L = 5 mm, and dcr = 450 μm, 2α = 11o, L = 5 mm to form an atomic cluster beam. The emission spectra for various gas targets were obtained, the obtained spectra were deciphered, and the ions emitting in this spectral range were determined. We observed that with increasing particle concentration in the zone of laser spark, the radiation intensity increases. In this case, the intensity of ion lines with high degrees of ionization increases faster.

scholarly journals Эмиссионные спектры тяжелых инертных газов Kr, Xe в диапазоне 3-20 nm при импульсном лазерном возбуждении с использованием различных газовых струй в качестве мишеней

2021 ◽  
Vol 129 (3) ◽  
pp. 266
Author(s):  
А.Н. Нечай ◽  
А.А. Перекалов ◽  
Н.Н. Салащенко ◽  
Н.И. Чхало
Keyword(s):  
Laser Radiation ◽  
Spectral Range ◽  
Particle Concentration ◽  
Pulsed Laser ◽  
Emission Spectra ◽  
Gas Jet ◽  
Pulsed Laser Radiation ◽  
Laser Spark ◽  
Gas Targets ◽  
20 Nm

The article considers the results of studies of the emission spectra of Kr, Xe upon excitation by pulsed laser radiation. We used Nd: YAG laser, λ = 1064 nm, τ = 5 ns, and Epulse = 0.8 J. The spectral range of 30-200A was studied. We used capillary with d = 500 μm and supersonic conical nozzles with dcr = 145 μm, 2α = 12o, L = 5 mm, and dcrit = 450 μm, 2α = 11o, L = 5 mm to form a gas jet. The emission spectra for various gas targets were obtained, the obtained spectra were deciphered, and the ions emitting in this spectral range were determined. We observed that with increasing particle concentration in the zone of laser spark, the radiation intensity increases. In this case, the intensity of ion lines with high degrees of ionization increases faster.

Emission Spectra of Light Inert Gases Ne and Ar in the 3–20 nm Range under Pulsed Laser Excitation Using Various Gas Jets as Targets

2021 ◽  
Vol 129 (2) ◽  
pp. 185-190
Author(s):  
A. N. Nechay ◽  
A. A. Perekalov ◽  
N. N. Salashchenko ◽  
N. I. Chkhalo
Keyword(s):  
Laser Excitation ◽  
Pulsed Laser ◽  
Emission Spectra ◽  
Inert Gases ◽  
Gas Jets ◽  
20 Nm ◽  
Nm Range

Influence of Continuous and Pulsed Laser Radiation on Optical and Thermal Properties of Biological Tissues

2014 ◽  
Vol 59 (12) ◽  
pp. 1149-1154
Author(s):  
A.D. Mamuta ◽  
◽  
V.S. Voitsekhovich ◽  
N.M. Kachalova ◽  
L.F. Golovko ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Laser Radiation ◽  
Pulsed Laser ◽  
Biological Tissues ◽  
Pulsed Laser Radiation

scholarly journals Smoothing additive manufactured parts using ns-pulsed laser radiation

2021 ◽  
Author(s):  
Florian Kuisat ◽  
Fernando Lasagni ◽  
Andrés Fabián Lasagni
Keyword(s):  
Surface Roughness ◽  
Mechanical Performance ◽  
State Of The Art ◽  
Pulsed Laser ◽  
Industrial Applications ◽  
Laser Source ◽  
Pulsed Laser Radiation ◽  
Current State ◽  
The Impact

AbstractIt is well known that the surface topography of a part can affect its mechanical performance, which is typical in additive manufacturing. In this context, we report about the surface modification of additive manufactured components made of Titanium 64 (Ti64) and Scalmalloy®, using a pulsed laser, with the aim of reducing their surface roughness. In our experiments, a nanosecond-pulsed infrared laser source with variable pulse durations between 8 and 200 ns was applied. The impact of varying a large number of parameters on the surface quality of the smoothed areas was investigated. The results demonstrated a reduction of surface roughness Sa by more than 80% for Titanium 64 and by 65% for Scalmalloy® samples. This allows to extend the applicability of additive manufactured components beyond the current state of the art and break new ground for the application in various industrial applications such as in aerospace.

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