Ionisation differential cross section measurements for N2 at low incident energy in coplanar and non-coplanar geometries. (15th September 2016)

• Record Type: Journal Article
• Authors: Sakaamini, Ahmad; Amami, Sadek; Murray, Andrew James; Ning, Chuangang; Madison, Don
• Is Part Of: Journal of physics. Volume 49:Number 19(2016:Oct. 01)
• Publication Date: 2016-09-15
• Subjects: nitrogen -- e -- 2e -- ionisation -- electron-impact -- non-coplanar; 34.80.Dp; Atoms -- Periodicals; Molecules -- Periodicals; Optics -- Periodicals; Nuclear physics -- Periodicals; 539.6
• DOI: 10.1088/0953-4075/49/19/195202
• Languages: English
• ISSNs: 0953-4075

Abstract

Abstract: Ionisation triple differential cross sections have been determined experimentally and theoretically for the neutral molecule N2 over a range of geometries from coplanar to the perpendicular plane. Data were obtained at incident electron energies ∼10 and ∼20 eV above the ionisation potential of the 3 σ g, 1 π u and 2 σ g states, using both equal and non-equal outgoing electron energies. The data were taken with the incident electron beam in the scattering plane ( ψ = 0°), at 45° to this plane and orthogonal to the plane ( ψ = 90°). The set of nine measured differential cross sections at a given energy were then inter-normalised to each other. The data are compared to new calculations using various distorted wave methods, and differences between theory and experiment are discussed.