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dc.creatorDion, MP
dc.creatorMartoff, CJ
dc.creatorHosack, M
dc.date.accessioned2021-02-07T17:49:10Z
dc.date.available2021-02-07T17:49:10Z
dc.date.issued2010-05-01
dc.identifier.issn0927-6505
dc.identifier.doihttp://dx.doi.org/10.34944/dspace/6038
dc.identifier.other599YH (isidoc)
dc.identifier.urihttp://hdl.handle.net/20.500.12613/6056
dc.description.abstractTime projection chambers drifting negative ions (NITPC) instead of electrons have several advantages. A NITPC can operate at very high reduced drift fields without diffusion runaway, and the readout digitization sampling rate requirement is considerably relaxed due to the low drift speed of negative ions. The initiation of Townsend avalanches to allow gas gain in these devices has not been understood until now. It is shown here that the avalanche in low pressure CS2 vapor is most likely initiated by collisional detachment of the electron from the negative molecular ion. In mixtures of nitromethane vapor with CO2 the mechanism appears to be more complex. © 2010 Elsevier B.V. All rights reserved.
dc.format.extent216-220
dc.language.isoen
dc.relation.haspartAstroparticle Physics
dc.relation.isreferencedbyElsevier BV
dc.subjectDark Matter
dc.subjectNegative ion
dc.subjectX-ray polarimeter
dc.subjectDiffusion
dc.subjectNegative ion avalanche
dc.titleOn the mechanism of Townsend avalanche for negative molecular ions
dc.typeArticle
dc.type.genreJournal Article
dc.relation.doi10.1016/j.astropartphys.2010.02.002
dc.ada.noteFor Americans with Disabilities Act (ADA) accommodation, including help with reading this content, please contact scholarshare@temple.edu
dc.date.updated2021-02-07T17:49:08Z
refterms.dateFOA2021-02-07T17:49:11Z


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