Priority of factors contributing to volume vapor formation in laser targets

Goncharov, V. K.; Kontsevoi, V. L.; Puzyrev, M. V.

doi:10.1007/bf00867955

Cited by 4 publications

(3 citation statements)

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“…Note, that the bulk evaporation is promoted by the gases, diluted in the metal, and by the spatiotemporal nonuniformity of the laser radiation [4]. At a radiation flux density 10 6 -10 7 W A B cm 2 the bulk evaporation is typical of all metals used in the experiments [5].…”

Section: Resultsmentioning

confidence: 99%

“…The metal is melted and evaporated. As a result of local formation of steam and plasma [4,5], the erosion torch begins to form with the fine-dispersed liquid-droplets phase.…”

Section: Resultsmentioning

confidence: 99%

“…The FEK-14 coaxial photodetector (8), the signal from which was coupled to the S8-13 oscilloscope, was used to record the temporal shape of the laser pulse. The voltage was applied to the electrodes (3,4) from the source (14), built on the basis of the UN 9/27-13 voltage multiplier of the TVS-l10 unit. The source allowed the voltage variation within 25 kV and its stabilization in the course of the experiment.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Diagnostics of a Crater Growth and Plasma Jet Evolution on Laser Pulse Materials Processing

Ivanov¹,

Vasiliev²

2012

Laser Pulses - Theory, Technology, and Applications

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Section: Resultsmentioning

confidence: 99%

“…The metal is melted and evaporated. As a result of local formation of steam and plasma [4,5], the erosion torch begins to form with the fine-dispersed liquid-droplets phase.…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Diagnostics of a Crater Growth and Plasma Jet Evolution on Laser Pulse Materials Processing

Ivanov¹,

Vasiliev²

2012

Laser Pulses - Theory, Technology, and Applications

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Influence of an electric field on near-surface processes in laser processing of metals

Васильев¹,

Ivanov²

2012

Quantum Electron.

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Droplets generation conducting during laser-plasma treating of metals in electric field

Ivanov

Sitkevich

Васильев

2021

J. Phys.: Conf. Ser.

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Evolution of plasma plume generation on the surface of metal irradiated by laser beam with the mean radiation flux density ~ 106 W/cm2 in the external electric field with different polarity and field strength from 0 to 106 V/m was experimentally investigated. It is shown that the mean size of metal droplets carried out from the irradiated zone of target becomes materially (in several times) smaller when of the external electric field strength amplitude grow, independently to its polarity. It is essential that the mentioned differences (at the considered parameters of laser radiation) are observed only at the initial stage of the laser plume development, because after the steam-plasma cloud reaches the electrode an electric breakdown (short-circuit) occurs, and the external field in the interelectrode gap disappears. Electric breakdown leads to the spasmodic increase of electron density and temperature of plasma and to effective absorption of laser radiation by plasma torch (shielding of the target). In consequence of shielding droplets generation happens only during electric field existence. This explains decrease by several times of the characteristic size of the target substance droplets in spite of short duration of electric field existence.

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Priority of factors contributing to volume vapor formation in laser targets

Cited by 4 publications

References 0 publications

Diagnostics of a Crater Growth and Plasma Jet Evolution on Laser Pulse Materials Processing

Diagnostics of a Crater Growth and Plasma Jet Evolution on Laser Pulse Materials Processing

Influence of an electric field on near-surface processes in laser processing of metals

Droplets generation conducting during laser-plasma treating of metals in electric field

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