Ultra-fast breakdown at pressures below one atmosphere

Show simple item record


dc.contributor.committeeChair Krompholz , Hermann
dc.contributor.committeeMember Neuber , Andreas A .
dc.contributor.committeeMember Hatfield , Lynn L .
dc.degree.department Electrical and Computer Engineering
dc.degree.discipline Electrical and Computer Engineering
dc.degree.grantor Texas Tech University
dc.degree.level Masters
dc.degree.name Master of Science in Electrical Engineering
dc.rights.availability Unrestricted .
dc.creator Chaparro , Jordan E .
dc.date.accessioned 2014 -06 -06T20 :18 :40Z
dc.date.available 2012 -06 -01T15 :47 :50Z
dc.date.available 2014 -06 -06T20 :18 :40Z
dc.date.issued 2006 -08
dc.identifier.uri http : / /hdl .handle .net /2346 /1171
dc.description.abstract Ultra -fast gaseous breakdown is an important phenomenon in pulsed power related to ultra wideband systems , plasma limiters , and ultra fast switches . Recent advances in digitizers and pulser technology has allowed for pulses with sub -nanosecond properties to be examined in detail . This thesis examines voltage pulses in quasi homogenous fields with rise times less then 200 ps and pulse widths less then 300 ps . The breakdown is examined in pressures from high vacuum to 600 torr in argon and air . E /N values range from the order of 103 to 106 Td , and are typically above the threshold for the generation of runaway electrons . Also discussed is the design and characterization of a transmission line system including a pulse shaping lens intended to limit wave distortion at a coaxial to biconical geometry . Finite element numerical simulations have been used to explain the behavior of the system . Diagnostic methods include waveform analysis from fast capacitive voltage dividers , X -Ray detection through a scintillator photomultiplier combination , and optical analysis through fast streak camera imaging . Parameters for the breakdown are established through modeling of the gap . X Ray emissions point to the role of runaway electrons in the breakdown . Electron energy at the anode is roughly determined for various pressure ranges . Streak camera imaging is used to show channel distribution and structure and its dependence on pressure . Results show breakdowns with development times too fast to be explained by standard breakdown mechanics indicating the importance of fast electrons in the event .
dc.format.mimetype application /pdf
dc.language.iso eng
dc.subject Pulse Shaping
dc.subject Gaseous Breakdown
dc.subject Sub -Nanosecond
dc.subject Runaway Electrons
dc.title Ultra -fast breakdown at pressures below one atmosphere
dc.type Thesis

Citation

Ultra-fast breakdown at pressures below one atmosphere. Master's thesis, Texas Tech University. Available electronically from http : / /hdl .handle .net /2346 /1171 .

Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record

Search DSpace

Advanced Search

Browse