title: Deuterium anions in inertial electrostatic confinement devices.
abstract: A magnetic deflection-energy analyzer and Faraday trap diagnostic have been used to make measurements of divergent deuterium anion flow in the inertial electrostatic confinement experiment at the University of Wisconsin-Madison (UW-IEC) [J. F. Santarius, G. L. Kulcinski, R. P. Ashley, D. R. Boris, B. B. Cipiti, S. K. Murali, G. R. Piefer, R. F. Radel, I. E. Radel, and A. L. Wehmeyer, Fusion Sci. Technol. 47, 1238 (2005)], a device to confine high-energy light ions in a spherically symmetric electrostatic potential well. Deuterium anion current densities as high as 8.5 microA/cm2 have been measured at the wall of the UW-IEC device, 40 cm from the surface of the device cathode with a detector assembly of admittance area 0.7 cm2. Energy spectra obtained using a magnetic deflection-energy analyzer diagnostic indicate the presence of D2(-), and D- ions produced through thermal electron attachment near the device cathode, as well as D- ions produced via charge-transfer processes between the anode and cathode of the device.
authors.affiliation: Fusion Technology Institute, University of Wisconsin-Madison, 1500 Engineering Drive, Madison, Wisconsin 53706, USA.
authors.forename: D R
authors.initials: DR
authors.lastname: Boris
authors.forename: E
authors.initials: E
authors.lastname: Alderson
authors.forename: G
authors.initials: G
authors.lastname: Becerra
authors.forename: D C
authors.initials: DC
authors.lastname: Donovan
authors.forename: B
authors.initials: B
authors.lastname: Egle
authors.forename: G A
authors.initials: GA
authors.lastname: Emmert
authors.forename: L
authors.initials: L
authors.lastname: Garrison
authors.forename: G L
authors.initials: GL
authors.lastname: Kulcinski
authors.forename: J F
authors.initials: JF
authors.lastname: Santarius
authors.forename: C
authors.initials: C
authors.lastname: Schuff
authors.forename: S J
authors.initials: SJ
authors.lastname: Zenobia
mesh_terms: D000838:Anions; D003198:Computer Simulation; D003903:Deuterium / Q000737:chemistry*; D008956:Models, Chemical; D055672:Static Electricity
chemical_list: D000838:Anions; D003903:Deuterium