Journal article

Publication year: 1995

Pages: 51-58

Journal: Nuclear Fusion

Volume number: 6

ISSN: 0029-5515

Publisher: IOP Publishing

Abstract: 
Electron impact ionisation cross sections for the single and multiple ionisation of tungsten ions have been measured by employing the ''crossed-beams'' technique. For W(q+)ions in charge states q=1...10 cross sections for single ionisation were determined. For ions in charge states q=3...7, excitation-autoionisation from the ground state as well as from excited, metastable states strongly contributes to the cross sections. This results in a strong underestimation of the measured cross sections compared to the semiempirical Lotz formula in the energy range between the ionisation threshold and the cross section maximum. The ionisation cross section for W(q+)ions was measured in the case of double ionisation for q=1...6 and of triple ionisation up to q=4. The multiple ionisation cross sections indicate no considerable contributions of indirect processes.

Harvard Citation style: Stenke, M., Aichele, K., Hathiramani, D., Hofmann, G., Steidl, M., Volpel, R., et al. (1995) Electron impact ionisation of tungsten ions, Nuclear Fusion, 6, pp. 51-58

APA Citation style: Stenke, M., Aichele, K., Hathiramani, D., Hofmann, G., Steidl, M., Volpel, R., & Salzborn, E. (1995). Electron impact ionisation of tungsten ions. Nuclear Fusion. 6, 51-58.