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Presents a study which examined the effects of extreme-ultraviolet (XUV) illumination on particle beam fusion accelerator-I (PBFA-I) magnetically insulated ion diode. Types of detectors used to look for plasma or neutrals crossing the anode-cathode gap; Description of physical processes that occur in the ion diode during XUV illumination; Precursor pulse space-charge conduction limits in regions of XUV illumination.

A review of the diagnostics used at Sandia National Laboratories to measure the parameters of intense proton and lithium beams generated on the PBFA-II accelerator will be presented. These diagnostics consist of several types, namely: Kα x-ray pinhole cameras, a multiframe dE/dx ion pinhole camera, a p-i-n array ion pinhole camera, Thomson parabola spectrographs, a Rutherford magnetic spectrograph, plasma visible spectroscopy, and several nuclear activation diagnostics. These components, when taken together, enable a rather thorough description of the 5-MV, 10TW ion beams presently being produced. A unique feature of these diagnostics is that they are capable of operating in hard (several MeV) x-ray bremsstrahlung backgrounds of some 10[sup 9]-10[sup 10] rad/s. Details of each diagnostic, its integration, data reduction procedures, and recent PBFA-II data will be discussed. [ABSTRACT FROM AUTHOR]

Discusses the basic principles and calibration of direct nuclear activation diagnostics (DNAD) created to measure the hydrogen, lithium, carbon, and fluorine content of an intense lithium beam being developed at the Sandia National Laboratories in Albuquerque, New Mexico. Measurement of the energy fluence of a particular ion species; Requirements for a successful DNAD.

Describes a set of direct nuclear activation diagnostics that could measure the energy densities of the lithium and hydrogen ions in intense lithium beams being developed on the Particle Beam Fusion Accelerator II at the Sandia National Laboratories in Albuquerque, New Mexico. Principle of a direct nuclear activation diagnostic; Total hydrogen energy in the beam.

Recent proton experiments on Particle Beam Fusion Accelerator II used a 2 µm gold foil cone to characterize the ion beam. Using the ion beam images obtained by viewing beam-induced characteristic line radiation emitted by such foils with time-integrated x-ray pinhole cameras, the beam centroid axial location and azimuthal symmetry have been analyzed for a recent series of target shots. Azimuthal symmetry on the target midplane on individual shots varied from 6% to 29%. Averaged over the entire series of shots, inferred intensities on the target midplane varied by 24% to 37% from quadrant to quadrant. The beam profiles and beam reproducibility are vital to the interpretation of the results of these target experiments. [ABSTRACT FROM AUTHOR]