| Full text | |
| Author(s): |
Lima, Iara B.
;
Vivaldini, Tulio C.
;
Goncalves, Josemary A. C.
;
Botelho, Suzana
;
Ridenti, Marco A.
;
Fonte, Paulo
;
Mangiarotti, Alessio
;
Pascholati, Paulo R.
;
Bueno Tobias, Carmen C.
;
Vanin, VR
Total Authors: 10
|
| Document type: | Journal article |
| Source: | XXXIII BRAZILIAN WORKSHOP ON NUCLEAR PHYSICS; v. 1351, p. 5-pg., 2011-01-01. |
| Abstract | |
In this work studies of the first Townsend coefficient (alpha) behavior in isobutane for reduced electric fields ranging from 139Td up to 208Td are presented. Pure isobutane has been widely used in Resistive Plate Chambers (RPCs) and other gaseous detectors because of its excellent timing properties. Regardless of these characteristics, there is a lack of swarm parameters data in the literature for this gas. The measurements were based on the Pulsed Townsend technique. Considering the ratio between the current, measured in avalanche mode, and the primary ionization current, the first Townsend coefficient can be determined. In order to validate the technique, results for nitrogen are also presented. (AU) | |
| FAPESP's process: | 07/06773-0 - Measurements of Gaseous Multiplication Coefficient of Pure Isobuthane |
| Grantee: | Iara Batista de Lima |
| Support Opportunities: | Scholarships in Brazil - Master |
| FAPESP's process: | 07/06771-8 - Measurements of electron drift velocity in pure isobuthane |
| Grantee: | Túlio Cearamicoli Vivaldini |
| Support Opportunities: | Scholarships in Brazil - Master |