Year: 1969
Type: article
Abstract: Cross sections for the formation of secondary H 2 + and H + ions when 1·4-46 kev H 2 + ions pass through thin targets of hydrogen have been determined using a mass spectrometer which was designed to ensure that all secondary ions were recorded with a high and uniform collection efficiency. The influence of vibrational excitation of the H 2 + primary ions on the observed yields of the slow H 2 + and H + ions has also been investigated. The results have been used to take account of dissociative processes in the derivation of the symmetrical charge-transfer cross section σ 1 for the process H 2 + ( v = 0) + H 2 ( v = 0) -> H 2 (Σ v ) + H 2 + (Σ v ) using the previous experimental data of McClure. Upper and lower bounds for σ 1 have been estimated for energies within the present range and these values lie considerably below the theoretical cross sections due to Bates and Reid.
Authors: C J Latimer, R Browning, H B Gilbody
Institution: Queen's University Belfast
Language: English
Topic: Atomic and Molecular Physics
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2024414949