Frank C. D. Young

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ASTERIX is a high-voltage (6 to 7 MV), ~ 60-Ω, ~ 50ns FWHM pulse generator located at the Centre d’Etudes de Gramat (CEG) in Gramat, France. It has been recently used for the first evaluation of the rod-pinch[1] electronbeam diode as a source for high-resolution, penetrating flash radiography at up to 4 MV (on a 40 to 50-Ω load).[2] For this evaluation, the(More)
The Hybrid Radiation Source (HRS) is a compact pulsed power generator consisting of a commercial flash x-ray system that has been retrofitted with a custom frontend assembly, replacing a sealed glass tube. A new high impedance (~120 Ohm) space-charge-limited (SCL) diode was fielded on the HRS. This diode produces a ~ 1.6 mm diameter x-ray spot suitable for(More)
  • F. Bayol, P. Charre, +9 authors G. Cooperstein
  • 2014
The ASTERIX generator is used to obtain the first evaluation of the rod-pinch electron-beam diode as an intense source of x-rays for high-resolution, pulsed (30to 40-ns FWHM) radiography at voltages of 2 to 4 MV and currents between 50 and 100 kA. At these levels, the rod pinch exhibits standard diode electrical behavior for 1and 2-mm diam anodes. The(More)
The current of an intense, pulsed proton beam is experimentally determined by monitoring prompt gamma rays from nuclear reactions induced in a suitable target. Relevant data are given on the reactions employed including (7)Li(p,gamma) (8)Be, (19)F(p,alphagamma) (16)O, and (12)C(p,gamma) (13)N so that absolute currents can be determined. This method avoids(More)
This review summarizes pituitary anatomy and physiology in each fish group and, where possible, identifies each adenohypophysial cell type in terms of morphology, location, staining reactions, and hormone secreted. Hypothalamic control, cyclic changes, and responses to other hormones are also covered. [The SCm indicates that this paper has been cited in(More)