Improved flash x-ray uniformity at 19 MeV using a compound-lens diode
- 15 May 1991
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 69 (10), 7283-7286
- https://doi.org/10.1063/1.347626
Abstract
Significantly improved spatial uniformity of bremsstrahlung radiation, relative to a planar-anode diode, is obtained on the HERMES III accelerator when a compound-lens diode is used to control the 19-MeV, 700-kA electron beam. The compound-lens diode uses a conical anode to control the beam electrostatically, followed by a gas cell with externally applied current to control the beam magnetically. Variation of the external current enables average doses at the target to be varied by a factor of 3 without breaking the vacuum system of the accelerator to change diode hardware.Keywords
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