AN IMPROVED ELECTROSTATIC ELECTRON SELECTOR
Authors:
- Paul MarmetPMPaul Marmet
- Larkin KerwinLKLarkin Kerwin
- 1 June 1960
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Physics
- Vol. 38 (6) , 787-796
Abstract
A cylindrical electrostatic electron selector is described which provides a 10−7 ampere beam of electrons whose energy may be varied from 0 to 50 ev and whose energy spread is less than 100 mv. Space-charge problems involved in the construction of the device were overcome by the use of grids for focusing electrodes with exterior electron traps, and a non-reflecting surface for electrons made from a network of tiny tubes. The selector is provided with an energy analyzer. When used to determine the appearance potential curve of argon, the selector resolved the 2P3/2 and 2P1/2 states separated by 0.18 ev, and indicated the formation of [ ] at an energy of 0.8 ev below the threshold for A+.Keywords
This publication has 3 references indexed in Scilit:
- Reflection of Very Slow ElectronsPhysical Review B, 1958
- Mass Spectrometric Studies of Molecular Ions in the Noble GasesPhysical Review B, 1951
- Re-Focussing of Electron Paths in a Radial Electrostatic FieldPhysical Review B, 1929