scholarly journals A simple approach to the state-specific MR-CC using the intermediate Hamiltonian formalism

2016 ◽  
Vol 144 (6) ◽  
pp. 064101 ◽  
Author(s):  
E. Giner ◽  
G. David ◽  
A. Scemama ◽  
J. P. Malrieu
Keyword(s):  
Hamiltonian Formalism ◽  
Simple Approach ◽  
The State

CANONICAL QUANTIZATION OF A RELATIVISTIC PARTICLE WITH TORSION

1991 ◽  
Vol 06 (08) ◽  
pp. 719-726 ◽  
Author(s):  
V.V. NESTERENKO
Keyword(s):  
Mass Spectrum ◽  
Relativistic Particle ◽  
Dimensional Space ◽  
Canonical Quantization ◽  
Hamiltonian Formalism ◽  
Space Time ◽  
The State ◽  
Half Integer ◽  
Dimensional Space Time ◽  
Continuous Spins

The generalized Hamiltonian formalism for the relativistic particle with a torsion in a D-dimensional space-time is constructed. On this basis, the canonical quantization of the model is fulfilled. For D=3 the mass spectrum is obtained, the mass of the state being dependent on its spin. The possibility to describe the states with integer, half-integer and continuous spins in the framework of this model is discussed.

Practical Picture Processing

1974 ◽  
Vol 32 ◽  
pp. 338-339
Author(s):  
T. A. Welton
Keyword(s):  
Radiation Damage ◽  
Coherence Length ◽  
Spatial Information ◽  
State Of The Art ◽  
Coherent Radiation ◽  
The State ◽  
Energy Spread ◽  
Electron Micrograph ◽  
Picture Processing ◽  
Molecular Skeleton

Various authors have emphasized the spatial information resident in an electron micrograph taken with adequately coherent radiation. In view of the completion of at least one such instrument, this opportunity is taken to summarize the state of the art of processing such micrographs. We use the usual symbols for the aberration coefficients, and supplement these with £ and 6 for the transverse coherence length and the fractional energy spread respectively. He also assume a weak, biologically interesting sample, with principal interest lying in the molecular skeleton remaining after obvious hydrogen loss and other radiation damage has occurred.

Influence of X-Ray Induced Fluorescence on Energy Dispersive X-Ray Analysis of Thin Foils

1977 ◽  
Vol 35 ◽  
pp. 328-329
Author(s):  
E. A. Kenik ◽  
J. Bentley
Keyword(s):  
Thin Foil ◽  
Electron Excitation ◽  
Simple Approach ◽  
Foil Thickness ◽  
X Rays ◽  
X Ray ◽  
Hole Spectrum ◽  
Illumination System ◽  
Thin Foils ◽  
Intensity Ratios

Cliff and Lorimer (1) have proposed a simple approach to thin foil x-ray analy sis based on the ratio of x-ray peak intensities. However, there are several experimental pitfalls which must be recognized in obtaining the desired x-ray intensities. Undesirable x-ray induced fluorescence of the specimen can result from various mechanisms and leads to x-ray intensities not characteristic of electron excitation and further results in incorrect intensity ratios.In measuring the x-ray intensity ratio for NiAl as a function of foil thickness, Zaluzec and Fraser (2) found the ratio was not constant for thicknesses where absorption could be neglected. They demonstrated that this effect originated from x-ray induced fluorescence by blocking the beam with lead foil. The primary x-rays arise in the illumination system and result in varying intensity ratios and a finite x-ray spectrum even when the specimen is not intercepting the electron beam, an ‘in-hole’ spectrum. We have developed a second technique for detecting x-ray induced fluorescence based on the magnitude of the ‘in-hole’ spectrum with different filament emission currents and condenser apertures.

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