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Now showing items 1-10 of 25

#### Orbital characteristics of meteoroids

(University of Canterbury, 1984)

The bulk of meteoroidal particles follow pseudo-random
orbits and are termed sporadic meteoroids. These are
thought to be derived from the correlated streams of particles
released by comets, although the mechanisms ...

#### Solid state spectroscopy : the spectra of Co²⁺ ions in AMX₃-type crystals

(University of Canterbury. Physics, 1983)

A Raman scattering and infrared absorption investigation of Co²⁺ ion electronic excitations in several diamagnetic AMX₃-type crystals is reported. Spectra arising from these excitations were measured over the range 0-1400 ...

#### Solid state spectroscopy : laser selective excitation of erbium ions in crystalline solids

(University of Canterbury. Physics, 1987)

Optical absorption and laser selective excitation (l.s.e.) spectroscopy have been used to study Er³⁺ ions in the CsCdBr₃ and hydrogenated CaF₂ and SrF₂ crystalline lattices. Sixteen hydrogenic charge compensation sites for ...

#### Applications and methods of group theory in elementary particle physics

(University of Canterbury. Physics, 1982)

The use of Schur function methods in the evaluation of Kronecker products of irreducible representations of the compact semisimple Lie groups is reviewed. For irreducible representations of the classical groups, explicit, ...

#### Calculation of 6j symbols

(University of Canterbury. Physics, 1988)

At present there is no complete algorithm for the calculation of the coupling or recoupling factors of an arbitrary compact group. However, this thesis is based on the premise that the 6j can be calculated using only the ...

#### Evaluation of an interference filter photometer for the measurement of atmospheric ozone and aerosol scattering

(University of Canterbury. Physics, 1989)

A multi-wavelength, narrow-band, interference filter spectrophotometer has been designed by the New Zealand Meteorological Service. Its intended function is to provide measurements of atmospheric transmission at ultraviolet, ...

#### Polarisation dependence of multiphoton spectroscopy

(University of Canterbury. Physics, 1981)

Group theoretical techniques are used to analyse the polarisation dependence of multiphoton processes. The analysis is sufficiently general to be applied to all point group symmetries and in a wide variety of physical ...

#### An intermediate-coupling expansion for hamiltonian lattice gauge theory

(University of Canterbury. Physics, 1982)

An intermediate-coupling expansion for the Hamiltonian formulation of lattice gauge theory without matter fields is developed. The expansion is an alternative to the conventional strong-coupling methods and is applicable ...

#### Atmospheric physics : a study of F-region travelling ionospheric disturbances

(University of Canterbury. Physics, 1980)

A Fast-Fourier-Transform method has been used to calculate a series of one-dimensional ground diffraction patterns which arise from point-source illumination of a moving sinusoidal reflector. Correlation analysis was ...

#### The properties of the groups ON, SON, Sn and An

(University of Canterbury. Physics, 1982)

The problems of group theory applied in physics often are reduced to the calculation of the dimensions, the branching rules, the resolution of the Kronecker products, the symmetrized powers and the classification of the ...