The Study of Optoacoustic First and Second Sound Waves in Superfluid Helium under the Effect of Gaussian Laser Light Considering Electrostriction Mechanism

Leyla Safaei Kouchaksaraei^*

Physics Science and Research Institute, Tajik National University, Dushanbe, Tajikistan.

DOI: 10.4236/jmp.2015.67089                

Abstract

The present paper is aimed to study the effect of Gaussian laser light on first and second sound waves in superfluid helium theoretically using optoacoustic method. The mechanism applied in this study is electrostriction mechanism. This study considers crystal parts of superfluid helium with a zero absorption coefficient applying electrostriction mechanism. Affecting Gaussian laser light on these crystal parts, a spectrum of cylindrical first and second sound waves and cylindrical slow and rapid waves is obtained. Meanwhile, frequency of waves amplitudes proportionate to time period of laser light is calculated.

Keywords

Electrostriction Mechanism, First and Second Sound Waves, Gaussian Laser Light, Superfluid Helium

Conflicts of Interest

The authors declare no conflicts of interest.

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