A measurement of the dielectronic recombination of He sup + ions

Conference · Tue Jan 01 04:00:00 EST 1991

OSTI ID:5971040

Mowat, J R ^[1]; Tanis, J A; Haar, R R; Forest, J L ^[2]; Ellison, T; Foster, C; Jacobs, W; Rinckel, T ^[3]; Dittner, P F ^[4]; Graham, W G ^[5]

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1. North Carolina State Univ., Raleigh, NC (United States)
2. Western Michigan Univ., Kalamazoo, MI (United States). Dept. of Physics
3. Indiana Univ. Cyclotron Facility, Bloomington, IN (United States)
4. Oak Ridge National Lab., TN (United States)
5. Queen's Univ., Belfast, Nor

The singly-charged helium atom is the lightest ion which can undergo dielectronic recombination (DR). Because of its small nuclear charge, the electron-electron interaction in helium is stronger relative to the electron-nucleus interaction than it is in other ions. This makes He+ an interesting challenge for theoretical analysis. The experiment reported here is the first attempt to measure DR in helium. It is being carried out at the Indiana University Cyclotron Facility Cooler Ring, an ion storage ring, where dielectronic recombination occurs as helium ion make a single pass through the electron cooler. The preliminary results are consistent with theoretical expectations that capture occurs primarily to states of principal quantum number n > 3.

• Research Organization: Oak Ridge National Lab., TN (United States)
• Sponsoring Organization: DOE; NSF; USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 5971040
• Report Number(s): CONF-9110313-4; ON: DE92006605
• Country of Publication: United States
• Language: English

Related Subjects

664400* -- Experimentally Derived Information on Atomic & Molecular Properties-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
BEAM COOLING
BEAMS
CHARGED PARTICLES
ELECTRON BEAMS
ELECTRON COOLING
HELIUM IONS
IONIZATION
IONS
LEPTON BEAMS
MEASURING METHODS
PARTICLE BEAMS
RECOMBINATION
SPACE CHARGE