A New Model of the Electron Gas Effect on the Thermoacoustics of Conductors under Laser Irradiation

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A New Model of the Electron Gas Effect on the Thermoacoustics of Conductors under Laser Irradiation. / Morozov, N. F.; Muratikov, K. L.; Indeitsev, D. A.; Vavilov, D. S.; Semenov, B. N.

In: Physical Mesomechanics, Vol. 22, No. 1, 01.01.2019, p. 13-17.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{beaf4466aa474d13ae6d0ffa2654e7a9,

title = "A New Model of the Electron Gas Effect on the Thermoacoustics of Conductors under Laser Irradiation",

abstract = "A two-component model which accounts for electron gas pressure is proposed for describing the dynamics of thermoelastic and thermoacoustics effects in laser-irradiated conductors. The model medium represents two interpenetrating continua such that interacting particles of both exist at each point of the medium. The electron gas in the model comprises free and bound electrons of which the former obey the laws for perfect metals and the latter obey those that account for electron trapping to localized levels and for electron transitions from level to level, i.e., for jump diffusion and hopping conductivity. Unlike the classical model of thermoelasticity, the proposed model is the first to show that the electron gas pressure depends strongly on the temperature difference between the electron gas and the conductor lattice and on the change in the density of free electrons as localized species become free by the Mott mechanism. The duration of acoustic pulses in the conductor lattice is essentially dependent on the time of laser irradiation and on how long the gas and the lattice differ in temperature, with the longest acoustic pulse falling on a certain localized electron density. The model data are compared with experiments.",

keywords = "conductors, dynamic behavior, electron gas, laser irradiation, thermoacoustics, thermoelasticity, two-component model",

author = "Morozov, {N. F.} and Muratikov, {K. L.} and Indeitsev, {D. A.} and Vavilov, {D. S.} and Semenov, {B. N.}",

note = "Publisher Copyright: {\textcopyright} 2019, Pleiades Publishing, Ltd.",

year = "2019",

month = jan,

day = "1",

doi = "10.1134/S1029959919010041",

language = "English",

volume = "22",

pages = "13--17",

journal = "Physical Mesomechanics",

issn = "1029-9599",

publisher = "Springer Nature",

number = "1",

}

RIS

TY - JOUR

T1 - A New Model of the Electron Gas Effect on the Thermoacoustics of Conductors under Laser Irradiation

AU - Morozov, N. F.

AU - Muratikov, K. L.

AU - Indeitsev, D. A.

AU - Vavilov, D. S.

AU - Semenov, B. N.

PY - 2019/1/1

Y1 - 2019/1/1

N2 - A two-component model which accounts for electron gas pressure is proposed for describing the dynamics of thermoelastic and thermoacoustics effects in laser-irradiated conductors. The model medium represents two interpenetrating continua such that interacting particles of both exist at each point of the medium. The electron gas in the model comprises free and bound electrons of which the former obey the laws for perfect metals and the latter obey those that account for electron trapping to localized levels and for electron transitions from level to level, i.e., for jump diffusion and hopping conductivity. Unlike the classical model of thermoelasticity, the proposed model is the first to show that the electron gas pressure depends strongly on the temperature difference between the electron gas and the conductor lattice and on the change in the density of free electrons as localized species become free by the Mott mechanism. The duration of acoustic pulses in the conductor lattice is essentially dependent on the time of laser irradiation and on how long the gas and the lattice differ in temperature, with the longest acoustic pulse falling on a certain localized electron density. The model data are compared with experiments.

AB - A two-component model which accounts for electron gas pressure is proposed for describing the dynamics of thermoelastic and thermoacoustics effects in laser-irradiated conductors. The model medium represents two interpenetrating continua such that interacting particles of both exist at each point of the medium. The electron gas in the model comprises free and bound electrons of which the former obey the laws for perfect metals and the latter obey those that account for electron trapping to localized levels and for electron transitions from level to level, i.e., for jump diffusion and hopping conductivity. Unlike the classical model of thermoelasticity, the proposed model is the first to show that the electron gas pressure depends strongly on the temperature difference between the electron gas and the conductor lattice and on the change in the density of free electrons as localized species become free by the Mott mechanism. The duration of acoustic pulses in the conductor lattice is essentially dependent on the time of laser irradiation and on how long the gas and the lattice differ in temperature, with the longest acoustic pulse falling on a certain localized electron density. The model data are compared with experiments.

KW - conductors

KW - dynamic behavior

KW - electron gas

KW - laser irradiation

KW - thermoacoustics

KW - thermoelasticity

KW - two-component model

UR - http://www.scopus.com/inward/record.url?scp=85064172246&partnerID=8YFLogxK

U2 - 10.1134/S1029959919010041

DO - 10.1134/S1029959919010041

M3 - Article

VL - 22

SP - 13

EP - 17

JO - Physical Mesomechanics

JF - Physical Mesomechanics

SN - 1029-9599

IS - 1

ER -

ID: 39750622