arXiv subjects
Publications and source records attributed to M. Kozlowski.
In this paper the Weyl equation for temperature field induced by laser beam interaction with matter is proposed and solved. Depending on the scattering mechanism the temperature field oscillate or is damped. Key words: Thermal processes, Weyl equation
In this paper the possibility of the generation of the thermal waves in 2D electron gas is investigated. In the frame of the quantum heat transport theory the 2D quantum hyperbolic heat transfer equation is formulated and numerically solved. The obtained solutions are the thermal waves in electron 2D gases. As an exapmle the thermal waves in quantum corrals are described. Key words: 2D electron gas, quantum corrals, thermal waves.
In this paper the possibility of the excitation of collective nuclear motion with attosecond laser pulses is investigated. Following our earlier results (Lasers in Engineering 11 (2001) p. 259) the hyperbolic heat transport for nuclear matter is formulated and solved. It is shown that in the vicinity of the 30 MeV excitation energy the recollided electrons can excite the giant collective motions - thermal wave inside the nuclei. Key words: Attosecond laser pulses; Electronuclear reactions; Thermal waves; Giant Resonances.
In this paper the solution of the hyperbolic Klein-Gordon thermal equation are obtained and discussed. The analytical form of the solution - Green functions are calculated for one and three dimensional cases. It is shown that only in three dimensional case the undisturbed, with one value of the velocity, thermal wave can be generated by attosecond laser pulses. The conductivity for the space-time inside the atom is calculated and the value sigma_0=10^6 1/(Omega m) is obtained. Key words: Attosecond laser pulses; Klein-Gordon equation; Green functions.
In this paper the heat waves, induced by ultra-short laser pulses are considered. The hyperbolic heat transport in n-dimensional space-time is formulated and solved. It is shown that only for n-odd for heat waves the Huygens principle is fulfilled. The heat transport experiment for Cu_3Au alloy is considered. Key words: Hyperbolic heat transport; Thermal waves; Huygens principle; Cu_3Au alloy.
In this paper the superheating of electron plasma by femtosecond laser pulses is investigated. With Heaviside thermal equation (Lasers in Engineering, 12, (2002), p.17) the generation of superhot electrons is described. It is shown that in hot electron plasma (i.e. with electron energies >5MeV) the thermal shock waves can be generated. Key words: Femtosecond laser pulses; Hot electron plasma; Shock thermal waves.
The LASETRON project (Phys. Rev. Lett, 88, (2002), p. 074801-1) offers the possibility of the investigation of electron-positron structure of the space-time. Following our results (From Quarks to Bulk Matter, Hadronic Press, 2001) we analyze theoretically possibility of the penetration of zeptosecond laser pulses through space-time. Key words: Zeptosecond laser pulses; LASETRON; Electron-positron pairs; Space-time.
In this paper the aging of the Universe is investigated in the frame of quantum hyperbolic heat transport equation. For the open universe, when t to \infty, hbar to \infty, c to 0 and fine structure constant alpha is constant. Key words: Quantum heat transport; Open universe; Fine structure constant.
The second order (in time) Schrodinger equation is proposed. The additional term (in comparison to Schrodinger equation) describes the interaction of particles with vacuum filled with virtual particle-antiparticle pairs (zitterbewegung). Key words: Schrodinger equation; Nanoscience; Zitterbewegung.
In this paper the Boltzmann transport equation for thermal processes induced by ultra-short laser pulses is formulated and solved. For thermal process where the duration of the laser pulse (femtoseconds - attoseconds) is shorter than the relaxation time, the solution of Boltzmann equation differs from the solution of the Fourier equation. In this paper the formula for density current of the heat carrier is obtained. It is shown that for thin one-dimensional structures the current strongly depends on the scattering mechanism of the heat carriers. Key words: Boltzmann equation; Ultra-short laser pulses; Nonhomogenous materials.
In this paper the interaction of attosecond laser pulses with matter is investigated. The scattering and potential motion of heat carriers as well as the external force are considered. Depending on the ratio of the scatterings and potential motion the heat transport is described by the thermal forced Klein-Gordon or thermal modified telegraph equation. For thermal Heisenberg type relation V tau=hbar (tau is the relaxation time and V is the potential) the heat transport is described by the thermal distortionless damped wave equation. In this paper Klein-Gordon modified telegraph equation and wave equation are solved. Key words: Attosecond laser pulses; Quantum heat transport equation; Klein-Gordon thermal equation.
In the paper the thermal energy transfer for elementary particles is described. The quantum heat transport equation is obtained. It is shown that for thermal excitation of the order of the relaxation time the excited matter response is quantized on the different levels (atomic, nuclear, quark) with quantum thermal energy equal E^{atomic}=9 eV, E^(nuclear)=7 MeV and E^{quark}=139 MeV. As the result the quantum for the heating process of nucleons is the pi-meson (consisting of the two quarks). Keywords: Heat quanta; Quantum heat transport; Quantum diffusion coefficient.
Following the coincidence A x atomic year ~ Earth year (s), (A = Avogardo number, atomic year=a_B/alpha c, a_B=Bohr radius, alpha= fine structure constant, c=light velocity) and considering the "niche" for alpha, i.e. 180^{-1}<alpha<85^{-1}, the Ecosphere radius is calculated. Key words: Fine structure constant; Planet orbit radii.
XDAQ is a generic data acquisition software environment that emerged from a rich set of of use-cases encountered in the CMS experiment. They cover not the deployment for multiple sub-detectors and the operation of different processing and networking equipment as well as a distributed collaboration of users with different needs. The use of the software in various application scenarios demonstrated the viability of the approach. We discuss two applications, the tracker local DAQ system for front-end commissioning and the muon chamber validation system. The description is completed by a brief overview of XDAQ.
In this paper the quantum limit of heat transport induced by ultrashort laser pulses is discussed. The new quantum heat transport equation is derived. The relaxation time tau and diffusion coefficient D^e are calculated.
In the paper the quantum hyperbolic equation formulated in [M. Kozlowski, J. Marciak-Kozlowska, From Quarks to Bulk Matter, Hadronic Press, 2001], is appled to the study of the propagation of the initial thermal state of the Universe. It is shown that the propagation depends on the barrier height. The Planck wall potential is introduced, V_P=hbar/8t_P=1.25 10^18 GeV where t_P is a Planck time. For the barrier height V V_P the master equation is the Klein-Gordon equation. The solutions of both type equations for Cauchy boundary conditions are discussed.