论文信息 - Symmetric Resonance Multiple Charge Transfer of Neq+ and Arq+(q≦4) (トカマクプラズマでの電荷移動の役割(研究会報告))

Symmetric Resonance Multiple Charge Transfer of Neq+ and Arq+(q≦4) (トカマクプラズマでの電荷移動の役割(研究会報告))

Cross sections for resonance charge transfer processes, Aq++A to A+Aq+, have been measured for Ne1-4+ and Ar1-4+ at ion acceleration voltages of 2, 3 and 4 kV. The cross sections obtained at 2 kV are 6.9*10-16, 1.74*10-16, 4.9*10-17 and 3.4*10-18 cm2 for Ne+, Ne2+, Ne3+ and Ne4+, respectively, and 2.4*10-15, 5.5*10-16, 9.0*10-17 and 3*10-18 cm2 for Ar+, Ar2+, Ar3+ and Ar4+, respectively. This is the first measurement of resonance charge transfer cross sections for quadruply charged ions. The results obtained are discussed in terms of the total ionisation energies Sigma jqIj of the ions, where Ij is the jth ionisation potential. A concept of the 'survival factor' is introduced.

Yozaburo Kaneko

[1] R. F. Porter,et al. Electron-transfer reactions of fast Xe/sup n/+ ions with Xe in the energy range 15 keV to 1. 6 MeV , 1979 .

[2] K. Okuno,et al. Symmetric resonance double charge transfer in Kr/sup + +/ + Kr and Xe/sup + +/ + Xe systems , 1978 .

[3] E. Donets. Review of the JINR Electron Beam Ion Sources , 1976, IEEE Transactions on Nuclear Science.

[4] A. Müller,et al. Electron capture processes of multiply charged argon ions in argon at energies from 10 to 90 keV , 1975 .

[5] L. Kerwin,et al. ELECTRON TRANSFER TO MULTIPLY CHARGED IONS OF Ar, N2, N, AND O2 , 1967 .

[6] J. Hasted,et al. Electron capture by multiply charged ions , 1964 .

[7] W. Lichten. Resonant Charge Exchange in Atomic Collisions , 1963 .

[8] B. Moiseiwitsch,et al. Double Charge Transfer and the Mobility of He2+ Ions in Helium , 1959 .

[9] E. F. Gurnee,et al. Interchange of Charge between Gaseous Molecules in Resonant and Near‐Resonant Processes , 1957 .

[10] J. A. Dillon,et al. Charge Transfer Reactions in Monatomic and Diatomic Gases , 1955 .