Modelling of the ion birth radius in an inertial electrostatic confinement device

Abstract

Neutron sources are used for all kind of purposes, ranging from scientific research to isotope production and material composition detection. In an IEC neutron generator a deuterium plasma is formed. Ions in the plasma are accelerated radially inwards, gaining sufficient energy such that fusion can occur. The output, of these devices, is still lacking compared with conventional neutron sources. The neutron output is mainly produced by ions hitting background molecules. The energy of these incoming particles, due to long mean free paths, is mainly determined by their birth radius. In addition, the total current in the device, thus the number of ions, depends on the cathode temperature. Two models are used in order to investigate this. A Particle in Cell Monte Carlo Code (PIC-MCC) and an analytical current balance model at the cathode(cathode model).

Date of Award	31 Aug 2015
Original language	English
Supervisor	Roger J.E. Jaspers (Supervisor 1)