## Search

Now showing items 1-10 of 19

#### Rayleigh-Ritz Optimization Of The Structure-Function For A Kolmogorov Power-Density And an Approximate Analytical Solution For The 2-Point Electric-Field Correlation-Function

(Optical Society of America, 1989-04-01)

Beginning with the exact Kolmogorov power spectrum for an extended random medium (such as interstellar space), the structure function is first expressed as an inverse Fourier-Bessel transform. An approximate series ...

#### A Markov process model of ocean sediments

(Acoustical Society of America, 1985-01-01)

Monochromatic plane-wave illumination of a randomly stratified, laterally homogeneous sediment layer is considered. The deposition process creating the stochastic layering is assumed to be a continuous parameter, finite ...

#### X-ray and XPS studies of evaporated cuxs thin-films

(American Institute of Physics, 1983-04-01)

The structural changes in Cu x S films have been monitored by x_ray diffraction and correlated to the chemical changes taking place on the Cu x S surface, the latter monitored by XPS. The results show: evaporated Cu x S ...

#### A transport-theoretic analysis of pulse propagation through ocean sediments

(Acoustical Society of America, 1982-09-01)

The reflection of pulsed acoustic plane waves from ocean sedimentary layers is studied using a stochastic transport theory originally introduced by Barabanenkov et. al. [Izv. Vyssh. Uchebn. Zaved., Radiofiz 15, 1852 (1972)]. ...

#### Gaussian decomposition of beams and other functions

(American Institute of Physics, 1989-06-15)

The Gabor expansion of a function f_(x) decomposes it into a double sum over integers m and n of a product of basis functions g(x_m X) and Fourier_series exponentials exp(2πi n/X) for given spacing X. The choice of basis ...

#### A Bidirectional Traveling Plane-Wave Representation Of Exact-Solutions Of The Scalar Wave-Equation

(AIP Publishing, 1989-06-01)

A new decomposition of exact solutions to the scalar wave equation into bidirectional, forward and backward, traveling plane wave solutions is described. The resulting representation is a natural basis for synthesizing ...

#### Localized energy pulse trains launched from an open, semi-infinite, circular waveguide

(American Institute of Physics, 1989-01-15)

A new decomposition of exact solutions to the scalar wave equation into bidirectional, backward and forward traveling plane waves is described. These elementary blocks constitute a natural basis for synthesizing Brittinghamlike ...

#### Performance Of A Hybrid Bistable Device Using an Acoustooptic Modulator

(Optical Society of America, 1989-08-01)

Previous studies on acoustooptic hybrid bistable devices have been limited to the Bragg regime involving two diffracted orders, and no comparisons have been made between experimental results and theoretical predictions. ...

#### Computer simulation of electron beams. II. Low cost beam current reconstruction

(American Institute of Physics, 1985)

Reconstruction of current density in electron beams is complicated by distortion of phase space which can require very fine discretization of the beam into trajectories. An efficient discretization of phase space is ...

#### Computer simulation of electron beams. I. Space charge algorithm for asymmetric beams

(American Institute of Physics, 1985)

Longitudinal space_charge forces can be neglected in computer simulations of slowly curving quasilaminar electron beams. A particle mesh type algorithm for transverse space charge forces is developed, and great simplification ...