High-voltage, high-impedance ion beam production

Author

Hinshelwood, David ; Jackson, S.L. ; Allen, R.J. ; Commisso, R.J. ; Cooperstein, G. ; Mosher, D. ; Murphy, D.P. ; Ottinger, P.F. ; Schumer, J.W. ; Swanekamp, S.B. ; Weber, B.V. ; Young, F.C.

Author_Institution

Plasma Phys. Div., Naval Res. Lab., Washington, DC, USA

fYear

2009

fDate

June 28 2009-July 2 2009

Firstpage

227

Lastpage

232

Abstract

A high-power, high-impedance ion beam diode has been fielded on the Mercury inductive voltage adder at typical parameters of 4 MV, 360 kA, and 70-90-kA ion current. These results are consistent with theory and with LSP calculations. This beam is focused onto a CF₂ target to produce characteristic gammas via the ¹⁹F(p,Â¿Â¿)¹⁶O reaction. Diagnostics characterize the ion emission from the anode, the beam distribution on the target, and the gamma yield. Shaping the anode surface improves beam focusing on the target. Our experimental arrangement allows us to resolve the gamma signal in the presence of the diode bremsstrahlung, and to minimize spurious neutron production. The calculated gamma yield exceeds 10¹¹ gammas/sr.

Keywords

bremsstrahlung; ion emission; ion sources; neutron production; particle beam focusing; plasma diodes; proton-nucleus reactions; ¹⁹F(p,alpha+gamma)¹⁶O; CF₂ target; LSP calculations; Mercury inductive voltage adder; anode surface; beam distribution; beam focusing; diode bremsstrahlung; gamma signal; gamma yield; high-impedance ion beam diode; ion emission; neutron production; Anodes; Cathodes; Current measurement; Diodes; Electron emission; Impedance; Ion beams; Neutrons; Production; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Pulsed Power Conference, 2009. PPC '09. IEEE

Conference_Location

Washington, DC

Print_ISBN

978-1-4244-4064-1

Electronic_ISBN

978-1-4244-4065-8

Type

conf

DOI

10.1109/PPC.2009.5386248

Filename

5386248