Showing papers in "Physica D: Nonlinear Phenomena in 1966"

TL;DR: In this paper, the motion of an elastically bound particle, linearly coupled with a bath of N harmonic oscillators is calculated exactly, and the solution of this Langevin equation has the same behaviour as in the conventional theory of Brownian motion after a transient time τt.

TL;DR: In this article, the absolute ionization cross sections have been measured for fast electrons (energy range 0.6-20 keV) incident on He, Ne, Ar, Kr, Xe, H 2, D 2, N 2 and O 2.

TL;DR: In this paper, the authors reported the longest known T1 values for water, T1 at 28 MHz by a recovery from saturation, for very pure water between 0 and 100°C, using X ray diffraction, self diffusion, viscosity and slow neutron inelastic scattering.

TL;DR: In this paper, the velocity correlation function for a classical system of particles interacting with a two-particle potential is expanded in powers of t. The coefficients in this expansion are averages of derivatives of the interaction potential and can be expressed in terms of instantaneous two, three, etc., particle distribution functions.

TL;DR: Partial ionization cross sections were determined for the production of singly and doubly charged helium ions and of neon ions with charge up to 5+ in this paper, and the Bethe-Born approximation satisfied at the higher energies.

TL;DR: Partial ionization cross sections of argon, krypton and xenon have been determined for electrons with energy 0.5-18 keV in this paper, showing that the multiply charged ions are produced to a large extent via inner shell ionizations.

TL;DR: In this paper, total ionization and electron capture cross sections have been determined for protons incident on noble and diatomic gases between 10 and 140 keV using the condensor method with axial magnetic fields.

TL;DR: In this paper, an elastically bound particle, linearly coupled with a bath of small oscillators, is considered and the probability of finding the particle at time t in an eigenstate of its unperturbed Hamiltonian is calculated exactly.

TL;DR: In this article, the Langevin equation and Fokker-planck equation are derived for the classical and quantum-mechanical case, without applying perturbation theory, and it turns out that in addition to the transient times there exists a time τ l beyond which these equations loose their validity.

TL;DR: In this article, a systematical study of the equations of state for classical fluids is made, using three approximate integral equations to determine the two-particle correlation function: hypernetted chain, Born-Green and Percus-Yevick equations.

TL;DR: In this article, the relation between the microscopic and macroscopic susceptibility is discussed by means of an exactly solvable model, treated in a previous paper, and the limits of the validity of Nyquist's theorem are given.

TL;DR: In this article, the compressibility isotherms of krypton are given at temperatures from 0° up to 150°C and at densities up to 620 amagat, the maximum pressure being about 3000 atmospheres.

TL;DR: In this paper, the results of new measurements of the viscosity of four binary mixtures of gases are reported on, consisting of the following systems: He-Kr, He-N 2, N 2 -CO 2 and Ar-CO 2.

TL;DR: In this article, a complete proof is presented that the well-known approximation procedure leads to an asymptotically exact expression for the free energy, when the usual limiting process of statistical mechanics is performed.

TL;DR: In this article, a direct comparison of the signals of a particle multiplier (EMI-9603) and a Faraday cage at the detector side of a mass spectrometer was made.

TL;DR: In this paper, the results of sublattice magnetization measurements reported in the literature fail to show a simple relationship between hyperfine field and magnetic moment derived from magnetic neutron diffraction experiments.

TL;DR: In this article, a high-precision oscillating-disk viscometer was used to make absolute determinations of the viscosity of gases at atmospheric pressure in a temperature range 20 −950°C, approximately.

TL;DR: In this paper, a diffusion of atoms over the surface of field emission vavuum diodes is used to explain the temperature dependence of the field emission excess noise found by Kleint.

TL;DR: In this paper, an alternative method is presented to derive the Boltzmann integrodifferential equation, which avoids cluster type expansions and perturbation expansions, but makes use of the hierarchy equations for the rate of change of the reduced n particle distribution functions and of projection operator techniques.

TL;DR: In this paper, the authors propose a non-markoffienne version of the Equation Generale, Non-Markoffienne, Devolution (EGD) for distribution of vitesses in a systeme gravitationnel homogene.

TL;DR: In this article, the authors reported resistivity, Hall-and Seebeck-data of reduced and lithium-doped rutile both with and without alumina added and interpreted by a one band model.

TL;DR: In this paper, simultaneous measurements of the time dependence of the intensities of spectral lines and that of the number density of atomic and molecular ions in decaying plasmas produced in neon and helium-neon mixtures were reported.

TL;DR: In this paper, heat capacity measurements on pure Cu and Ag and on several dilute alloys are presented, and the C/T versus T curves of a number of these alloys show anomalies at low temperatures.

TL;DR: In this paper, integral equations for the determination of all transport coefficients in a classical pure fluid, formally valid to general order in the density, are derived from the correlation function expressions, and the functional assumption on the long time behaviour of the reduced time correlation functions is used as a starting point.

TL;DR: In this article, the authors developed a theory for the attenuation of sound in liquid helium, valid at temperatures below about 1°K, by considering three-phonon processes.

TL;DR: In this article, the surface tension of five Kr-CH 4 mixtures was also determined, showing an excess surface tension about -0.45 dyn/cm at 116°K for an equimolecular mixture.

TL;DR: In this paper, the pair correlation function and the thermodynamic functions for the Lennard-Jones potential as calculated from the Percus-Yevick equation are presented for temperatures and densities near the coexistence curve.

TL;DR: In this article, the specific heat of pure gold and dilute alloys of vanadium, chromium, manganese and iron with gold in the temperature region of 1.3 to 30°K was investigated.

TL;DR: In this paper, the gamma ray energies and half-lives obtained from targets of Na, Mg, Al, Ge, As, Y, In, Pb and Bi are reported.