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Перегляд Физика низких температур за автором "Adamenko, I.N."

Репозиторій DSpace/Manakin

Перегляд Физика низких температур за автором "Adamenko, I.N."

Сортувати за: Порядок: Результатів:

  • A new ripplon branch in He II 
    Tanatarov, I.V.; Adamenko, I.N.; Nemchenko, K.E.; Wyatt, A.F.G. (Физика низких температур, 2010)
    We analyse the dispersion relation of ripplons, on the surface of superfluid helium, using the dispersive hydrodynamics approach and find a new ripplon branch. We obtain analytical equation for the dispersion relation and ...
  • Collective modes in superfluid helium when there is a relative velocity between the normal and superfluid components 
    Adamenko, I.N.; Nemchenko, K.E.; Slipko, V.A.; Wyatt, A.F.G. (Физика низких температур, 2008)
    Collective modes are studied in superfluid helium when the normal and superfluid components have a relative velocity w. In this paper the general dispersion relation for first and second sound modes is obtained for ...
  • Creation of high-energy phonons by four-phonon processes in anisotropic phonon systems of He II 
    Adamenko, I.N.; Kitsenko, Yu.A.; Nemchenko, K.E.; Slipko, V.A.; Wyatt, A.F.G. (Физика низких температур, 2007)
    The problem of the creation of high-energy phonons (h-phonons) by a pulse of low-energy phonons (l-phonons) moving from a heater to a detector in superfluid helium, is solved. The rate of h-phonon creation is obtained ...
  • Evolution of a pulse of noninteracting quasiparticles with dispersion and initial angular width 
    Adamenko, I.N.; Nemchenko, K.E.; Slipko, V.A.; Wyatt, A.F.G. (Физика низких температур, 2004)
    The evolution of a pulse of noninteracting quasiparticles, caused by their different velocities and angular distribution of momenta, is studied theoretically. Equations are found that describe the shape of the pulse ...
  • Four and three-phonon scattering in isotropic superfluid helium 
    Adamenko, I.N.; Kitsenko, Yu.A.; Nemchenko, K.E.; Wyatt, A.F.G. (Физика низких температур, 2009)
    We analyse the important role of four-phonon processes (4pp) in isotropic phonon systems of superfluid helium. The matrix elements and the rate of four-phonon processes are calculated. Special consideration is given to the ...
  • On the suprathermal distribution in an anisotropic phonon system in He II 
    Adamenko, I.N.; Nemchenko, K.E.; G.Wyatt, A.F. (Физика низких температур, 2003)
    The equation that describes the suprathermal distribution of high-energy phonons (h phonons) created in anisotropic phonon systems in superfluid helium is obtained. The solution of this equation enables the derivation of ...
  • The unusual properties of anisotropic systems of quasiparticles in superfluid ⁴He 
    Adamenko, I.N.; Nemchenko, K.E.; Slipko, V.A.; Wyatt, A.F.G. (Физика низких температур, 2007)
    We discuss a number of unusual phenomena, which have been discovered recently in anisotropic quasiparticle systems in superfluid ⁴He. These include the creation of high-energy phonons by a pulse of low-energy phonons, ...
  • Three-phonon relaxation in isotropic and anisotropic phonon systems of liquid helium at different pressures 
    Adamenko, I.N.; Kitsenko, Yu.A.; Nemchenko, K.E.; Slipko, V.A.; Wyatt, A.F.G. (Физика низких температур, 2005)
    Starting from the kinetic equation for phonons in superfluid helium, expressions for the rates of three-phonon scattering in isotropic and anisotropic phonon systems were obtained for different pressures. These expressions ...
  • Viscosity and ultrasonic attenuation in ⁴He below 0.6 K 
    Chung-ln Um; Soo-Young Lee; George, T.F.; Pandey, L.N.; Adamenko, I.N. (Физика низких температур, 1997)
    Through a treatment of three-phonon processes, the wide-angle scattering rates and the absorption rates of phonons, which characterize viscosity and ultrasonic attenuation, respectively, are calculated for ⁴He below 0.6 ...

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