Hydrophysics

Hydrophysics

Effect of Maggi-Righi-Leduc phenomena on thermo-elastic acoustic wave and thermal wave generated by laser pulse

Document Type : Original Article

Author
Abdorreza Asrar
Malek Ashtar university of technology/ Shiraz/ Iran.
Abstract
In this paper we will study the effect of magneto static field on propagation of sound wavegenerated in metal by pulsed laser in thermo elastic regime . Almost the common mechanism in all interactions of laser pulse and metal is the thermo elastic mechanism mechanism. Ablation regime can occur and is possible in higher laser pulse energy. According to the effect of Maggi Righi Leduce phenomena, presence of magnetio static field normal to the surface of interaction of laser pulse and metal can almost trap the propagation of thermal wave in thermo elastic regime. The physical mechanism of this trapping and experimental results of this mechanism have investigated in this paper. We obtained maximum reduction in 2 D thermo elastic wave propagation around 18 ± 1 % in simulation and at presence of 1 tesla B field and qualitativelywe obtained 4.5 ± 1.1 % reduction of the width of thermal image in experiment.
Keywords
Maggi Righi Leduc phenomena
Thermal image
Thermoelastic wave
Thermal wave

Subjects

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  • Receive Date 09 February 2018
  • Revise Date 22 May 2018
  • Accept Date 09 June 2018