Title :
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
fDate :
June 28 2009-July 2 2009
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,¿¿)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;
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
DOI :
10.1109/PPC.2009.5386248
