摘要:

The relaxation process of the crystal shape near the facet is studied. We adopt a dynamical equation which takes account of the non‐analytic behavior of the vicinal‐surface free‐energy to analyze the relaxation process of the crystal shape near the facet. During the relaxation process, the surface gradient &rgr; behaves asp‐(&Dgr;R)1/2(&Dgr;r: distance from the facet edge) of the facet edge andp‐&Dgr;rquite near the facet edge.

ISSN:0094-243X    

DOI:10.1063/1.42423

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

A nonlinear evolution equation for void fraction in fluidization is derived from a one‐dimensional continuous model by applying the method of adiabatic eliminations. Based on our equation, the dynamics near the transitions point from stable fluidized beds to unstable ones is investigated. Phase separations in fluidized beds are also discussed.

ISSN:0094-243X    

DOI:10.1063/1.42468

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

The intensities are calculated of inelastic neutron scattering for the protons of methyl group in hindering potential. Orientationally localized states are employed as rotational bases. The Q‐dependence of intensity of each peak is derived in the case of 3‐fold and 6‐fold potentials.

ISSN:0094-243X    

DOI:10.1063/1.42424

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

Recently, we investigated the power spectrum of the energy fluctuation of the hydrogen bond (HB) network and found that liquid water exhibits 1/f(f=&ohgr;/2&pgr;) type fluctuation forf≊1−1000 cm−1. We here discuss a simple cellular dynamics (CD) model to explain this long time fluctuation in liquid water.

ISSN:0094-243X    

DOI:10.1063/1.42425

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

A hole conduction in the one‐dimensional molecular conductor, nickel‐rich cobalt phthalocyanine iodide, is studied using ad&pgr;‐coupled model. In this model, thed‐electron spins on the metal spin coupled ferromagnetically the itinerant‐&pgr;‐electron spins on the macrocycle. The &pgr;‐band gap and the optical‐absorption spectrum are computed in the mean‐field approximation with the periodic‐boundary condition. It is pointed out that the &pgr; holes contribute to the electric conduction in the nickel‐rich cobalt phthalocyanine iodide.

ISSN:0094-243X    

DOI:10.1063/1.42426

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

A variation principle which leads to general expression for the joint probability in stochastic processes is discussed. A systematic way of approximation for the joint probability is proposed.

ISSN:0094-243X    

DOI:10.1063/1.42427

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

The roton‐like excitations identified in many metallic glasses by neutron diffraction experiments and computor simulations have been considered as longitudinal accoustic phonons, since they all seem to lead to the sound waves in an elastic continuum in the long wavelength limit. In this paper, however, we will show that they are in fact optical phonons, by applying both analytical and computational methods to amorphous Mg70Zn30alloy.

ISSN:0094-243X    

DOI:10.1063/1.42428

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

As a attribute of innumerable phenomena, especially in the complex systems, the concept of self similarity has been established. The self similarity is an invariant property against a scaling operation, or operations to the quantity concerned. The property is essentially important to characterize the wide variety of dissimilar phenomena.

ISSN:0094-243X    

DOI:10.1063/1.42429

出版商:AIP    

年代:1992

数据来源: AIP

ISSN:0094-243X    

DOI:10.1063/1.42430

出版商:AIP    

年代:1992

数据来源: AIP

ISSN:0094-243X    

DOI:10.1063/1.42431

出版商:AIP    

年代:1992

数据来源: AIP