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Thermal bleaching of aqueous aerosols by laser radiation

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Soviet Physics Journal Aims and scope

Conclusions

The modern state of the art about the bleaching process for aqueous aerosols permits its characterization as sufficiently complex. The theoretical deductions referring to the main and accompanying effects have been verified in experiments on radiation bleaching of artificial mists. There exists just a certain lack of clarity in the question of wave distortions in the bleached channel.

However, this survey refers just to the preexplosive modes of action. The self-action processes during realization of explosions of particles have been studied quite weakly. In connection with this problem gas-dynamic modes of particle explosions accompanied by the occurrence of shocks [31–33] are most interesting. Also of interest is a study of the fragmentation of aerosols due to local overheating of the particles. The effect in explosions of this kind is carried over into the water content mode, and the process as a whole can be described by the energy variable method. Bleaching under fragmentation conditions has been noted in [34].

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Abbreviations

cp :

specific heat of a gas at constant pressure

D:

coefficient of vapor diffusion

k:

coefficient of effective utilization of absrobed energy

Kabs and Kext :

absorption and attenuation sections computed per unit volume of the condensed medium

Ka and Kt :

radiation absorption and attenuation efficiency factors of an aerosol particle

L:

specific heat of evaporation

p∞ :

equilibrium vapor pressure

q:

water content of the aerosol

R:

beam radius

Rg :

universal gas constant

Tb :

normal boiling point of the particle material

T∞ :

equilibrium temperature

W:

radiation flux intensity

αg :

volume coefficient of radiation absorption by atmospheric gases

γL :

density of the particle material

λ:

coefficient of gas thermal conductivity

λg :

vapor molecular weight

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Authors and Affiliations

  1. Institute of Optics of the Atmosphere, Siberian Branch, Academy of Sciences of the USSR, USSR

    V. E. Zuev & A. V. Kuzikovskii

Authors
  1. V. E. Zuev
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  2. A. V. Kuzikovskii
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 11, pp. 106–131, November, 1977.

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Zuev, V.E., Kuzikovskii, A.V. Thermal bleaching of aqueous aerosols by laser radiation. Soviet Physics Journal 20, 1480–1500 (1977). https://doi.org/10.1007/BF00892967

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