Investigating Total Charge Liberation From Low Intensity Laser Ablation of Solid Targets
Loading...
Authors
Iratcabal, Jeremy J.
Issue Date
2010
Type
Thesis
Language
en_US
Keywords
Alternative Title
Abstract
Measurements of the total charge liberated by laser ablation near the photoemission/plasma production intensity threshold are presented in this thesis. These data are necessary to benchmark theoretical descriptions of laser ablation phenomena in the difficult-to-model threshold intensity regime. The total charge expelled from laser irradiated metallic surfaces is determined from voltage pulses created when a replacement current neutralizes the ablated surface via a well characterized detection circuit. Repeated measurements are made for a laser beam of a known wavelength, energy, pulse duration, and intensity on target. The total net ablated charge is investigated by substituting metallic targets and varying laser parameters. A simplified discrete-element circuit model is used to describe the observed voltage pulses and determine the charge emitted from the laser irradiated surface. Single-shot and multishot measurements are also presented which indicate how laser repetition rates affect the emitted charge.
Description
The University of Nevada, Reno Libraries will promptly respond to removal requests related to content that violates intellectual property laws, data protections, or has been uploaded without creator consent. Takedown notices should be directed to our ScholarWolf team (scholarwolf@library.unr.edu) with information about the object, including its full URL and the nature of your complaint.
Citation
Publisher
License
In Copyright(All Rights Reserved)