Fusion-Related Ionization and Recombination Data for Tungsten Ions in Low to Moderately High Charge States

Atoms

Alfred Müller¹ 

[1] Institut für Atom- und Molekülphysik, Justus-Liebig-Universität Giessen, Leihgesterner Weg 217, 35392 Giessen, Germany; E-Mail

关键词: tungsten ions;    electron-impact ionization;    photoionization;    electron-ion recombination;   

DOI  :  10.3390/atoms3020120

来源: mdpi

【 摘 要 】

Collisional processes and details of atomic structure of heavy many-electron atoms and ions are not yet understood in a fully satisfying manner. Experimental studies are required for guiding new theoretical approaches. In response to fusion-related needs for collisional and spectroscopic data on tungsten atoms in all charge states, a project has been initiated in which electron-impact and photon-induced ionization as well as photorecombination of W^q+ ions are studied. Cross sections and rate coefficients were determined for charge states q ranging from q = 1 to q = 5 for photoionization, for q = 1 up to q = 19 for electron-impact ionization and for q = 18 to q = 21 for electron-ion recombination. An overview, together with a critical assessment of the methods and results is provided.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland