Absolute Doubly Differential Cross Sections for Ejection of Secondary Electrons from Gases by Electron Impact. II. 100-500-eV Electrons on Neon, Argon, Molecular Hydrogen, and Molecular Nitrogen

Absolute Doubly Differential Cross Sections for Ejection of Secondary Electrons from Gases by Electron Impact. I. 100- and 200-eV Electrons on Helium

Electron impact double ionization of neon

Electron-impact double ionization from the valence shell of neon has been measured at an incident electron energy of 3662.5 eV. Double-coincidence (e, (3-1)e) measurements have been made between the scattered electron and each of the ejected electrons in turn, ejected energies were 10 eV and 90 eV, respectively, at ejection angles of 45, 60, 90, 120 and 135 degrees with respect to the incident ...

Fully differential single-photon double ionization of neon and argon.

Triply differential cross sections are calculated for one-photon double ionization of neon and argon at various photon energies and electron energy sharings by using a frozen-core treatment to represent the remaining electrons of the residual ion. Angular distributions agree well with all existing experimental data, showing that in spite of its simplicity the method can treat the double ionizat...

Low energy (e,2e) measurements of CH4 and neon in the perpendicular plane.

Low energy experimental and theoretical triple differential cross sections for the highest occupied molecular orbital of methane (1t(2)) and for the 2p atomic orbital of neon are presented and compared. These targets are iso-electronic, each containing 10 electrons and the chosen orbital within each target has p-electron character. Observation of the differences and similarities of the cross se...

Differential Cross Sections for Ionization of Water Vapor by High-Velocity Bare Ions and Electrons

A semiempirical model of single differential cross sections (SDCS) for ionization of water vapor by fast electrons and bare ions is presented. At low secondary-electron energy, the model is based on an asymptotic expansion of the first Born approximation with coefficients, that are independent of projectile properties, evaluated from experimental photoabsorption and protonimpact ionization data...