## Files in this item

FilesDescriptionFormat

application/pdf

9543792.pdf (6MB)
(no description provided)PDF

## Description

 Title: Space-charge dynamics and neutron generation in an inertial-electrostatic confinement device Author(s): Nadler, Jonathon Howe Doctoral Committee Chair(s): Miley, George H. Department / Program: Nuclear, Plasma, and Radiological Engineering Discipline: Nuclear Engineering Degree Granting Institution: University of Illinois at Urbana-Champaign Degree: Ph.D. Genre: Dissertation Subject(s): Engineering, Electronics and Electrical Engineering, Nuclear Physics, Fluid and Plasma Abstract: Inertial-Electrostatic Confinement (IEC) is an alternative approach to fusion power that offers the ability to burn advanced fuels like D-He$\sp3$ in a non-Maxwellian, high density core. These aneutronic reactions are ideal for direct energy conversion.The results presented here are the first potential well measurements of an IEC-type device via a collimated proton detector. They indicate that a $\sim$14-kV positive potential well has formed inside a hollow, spherical cathode-grid at a potential of 30 kV, and a current of 12 mA.The formation of microchannels during the operation of the IEC devices suggests that angular momentum may be lower than what was earlier calculated for highly transparent cathode-grids. In addition, the generation of molecular ions in a glow discharge has been identified as a significant process in the formation of potential wells inside a discharge-type IEC device.A neutron generator based on the IEC of a fusion plasma has been demonstrated and characterized to generate a neutron source strength of $6\times10\sp5$ n/s from deuterium-deuterium, ion beam-background neutral gas fusion reactions at 30-kV. Scaling to higher neutron rates ($\sim$10$\sp{10}$ D-T n/s), using higher voltages and modified grid spacings is discussed. Such a generator has definite advantages over conventional ion beam-solid target generators and neutron emanating isotopes for low level neutron source applications. Issue Date: 1992 Type: Text Language: English URI: http://hdl.handle.net/2142/21502 Rights Information: Copyright 1992 Nadler, Jonathon Howe Date Available in IDEALS: 2011-05-07 Identifier in Online Catalog: AAI9543792 OCLC Identifier: (UMI)AAI9543792
﻿