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A METHOD OF DETERMINING THE ELECTRONIC TRANSITION MOMENT FOR DIATOMIC MOLECULES

- P. A. Fraser
- Physics
- 1 August 1954

A method is described that will give the variation, as a function of internuclear distance, of the electronic transition moment governing intensities in diatomic molecular band systems. Reliable… Expand

262 2

Positrons and Positronium in Gases

- P. A. Fraser
- Physics
- 1968

Publisher Summary There are significant physical differences between positron and electron interactions with atomic systems. Effects of the identity of the projectile with components of the target,… Expand

78 2

Vibrational Transition Probabilities of Diatomic Molecules: Collected Results N_{2}, N^{+}_{2}, no, O^{+}_{2}.

- W. R. Jarmain, P. A. Fraser, R. W. Nicholls
- Physics
- 1 September 1953

64 1

Low-energy ortho-positronium scattering by hydrogen atoms

- S. Hara, P. A. Fraser
- Physics
- 21 December 1975

The total elastic scattering and ortho-para conversion cross sections of low-energy ortho-positronium with hydrogen atoms have been calculated in the static exchange approximation including the l=0,… Expand

29 1

S-wave positron scattering by hydrogen atoms

- Y. F. Chan, P. A. Fraser
- Physics
- 1 December 1973

The S-wave scattering of positrons by hydrogen atoms is studied using the coupled static approximation with 26 correlation functions for energies up to the excitation threshold of hydrogen. Up to a… Expand

36 1

Scattering and annihilation cross sections of positrons with argon

- S. Hara, P. A. Fraser
- Physics
- 1 February 1975

The effective number of annihilation electrons (Zeff), the scattering length and s-wave phase shift of the positron-Ar system have been determined empirically below the threshold of positronium… Expand

15

Vibrational Transition Probabilities of Diatomic Molecules; Collected Results. Ii, N_{2}, cn, C_{2}, O_{2}, TiO.

- P. A. Fraser, W. R. Jarmain, R. W. Nicholls
- Physics
- 1954

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Vibrational Transition Probabilities of Diatomic Molecules: I

- P. A. Fraser, W. R. Jarmain
- Mathematics
- 1 December 1953

An approximation is made which allows analytic integration of the `overlap', and other, integrals of vibrational wave functions in Morse potentials that arise in the study of the electronic spectra… Expand

114

EFFECTS OF VIRTUAL EXCITATION OF THE 2s STATE ON THE ELASTIC SCATTERING OF ELECTRONS BY ATOMIC HYDROGEN

- K. Smith, R. McEachran, P. A. Fraser
- Physics
- 15 January 1962

The elastic scattering of electrons by hydrogen atoms, for electron energies below the first threshold of excitation of the atom (10.2 ev), is investigated numerically making full allowance for… Expand

41

Transition probability parameters of molecular spectra arising from combustion processes

- R. W. Nicholls, P. A. Fraser, W. R. Jarmain
- Chemistry
- 1959

Abstract The dependence of intensity distributions in molecular spectra upon ( a ) source conditions and (b) molecular constants (particularly transition probabilities) is discussed briefly.… Expand

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