Charge exchange in Be4+-H(n = 1, 2) collisions studied systematically by atomic-orbital close-coupling calculations

Content Provider	Semantic Scholar
Author	Igenbergs, Katharina Schweinzer, Josef Aumayr, Friedrich
Copyright Year	2009
Abstract	Charge exchange in Be4+–H(n = 1, 2) collisions was studied using the atomic-orbital close-coupling formalism in its impact parameter description and applying electron translational factors. Calculations were carried out in the energy range of 1–750 keV amu−1 with fully stripped beryllium ions impacting on atomic hydrogen in its ground state (1s) and in the excited n = 2 states. An optimized description of both collision centres was determined by analysing the convergence of the total cross sections and also by comparison with other theoretical approaches. This optimized description consists of up to 170 basis states involving hydrogen-like states and pseudostates. We present total, n-resolved as well as nl-resolved cross sections. The latter are needed to evaluate the emission cross sections in two limiting collisional plasma environments, i.e. single-collisional and multi-collisional. The calculated emission cross sections are compared with experimental data from the fusion experiment JET. Taking the experimental environment and certain characteristics of the theoretical methods into account, the agreement can be considered to be quite good.
Starting Page	235206
Ending Page	235206
Page Count	1
File Format	PDF HTM / HTML
DOI	10.1088/0953-4075/42/23/235206
Volume Number	42
Alternate Webpage(s)	https://pure.mpg.de/rest/items/item_2141869/component/file_2141868/content
Alternate Webpage(s)	https://doi.org/10.1088/0953-4075%2F42%2F23%2F235206
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article