Dielectronic recombination for Li{sup +} ions

Conference · Sat Dec 31 04:00:00 EST 1994

OSTI ID:199747

Zavodszky, P A ^[1]

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1. Western Michigan Univ., Kalamazoo, MI (United States)

Dielectronic recombination (DR) was investigated for Li{sup +} + e{sup {minus}} collisions using the electron cooler at the Indiana University Cyclotron Facility (IUCF). For Li{sup +} (1s{sup 2}) ions, DR is expected to occur for relative energies E between 50-60 eV, and for metastable Li{sup +} (1s2s) DR (involving 2s {r_arrow} 2p transitions) should occur for E{sup rel} < 1 eV. Also, for E{sub rel}, near zero, radiative recombination (RR) (inverse photoelectric effect) is expected. This work is an extension of previous work at IUCF for He{sup +} ions. These light He{sup +} and Li{sup +} ions pose stringent tests of DR theory because the electron-electron interaction, which mediates DR, is stronger compared to electron-nucleus interactions than it is for heavier ions. Additionally, the electron coupling in two-electron Li{sup +} gives rise to angular momentum configurations different from those in He{sup +}. In recent measurements at IUCF, the authors have observed DR for both ground-state and metastable Li{sup +} ions; analysis is currently in progress.

• OSTI ID: 199747
• Report Number(s): CONF-941129--
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ELECTRON CAPTURE
ELECTRON-ION COLLISIONS
LITHIUM IONS
RECOMBINATION