This item is non-discoverable
Loading...
Non-discoverable
On the mechanism of Townsend avalanche for negative molecular ions
Dion, MP Martoff, CJ Hosack, M
Dion, MP
Martoff, CJ
Hosack, M
Citations
Altmetric:
Genre
Journal Article
Date
2010-05-01
Advisor
Committee member
Group
Department
Permanent link to this record
Collections
Research Projects
Organizational Units
Journal Issue
DOI
10.1016/j.astropartphys.2010.02.002
Abstract
Time 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.
Description
Citation
Citation to related work
Elsevier BV
Has part
Astroparticle Physics
ADA compliance
For Americans with Disabilities Act (ADA) accommodation, including help with reading this content, please contact scholarshare@temple.edu