Experimental investigations on the first Townsend coefficient in pure isobutane

Autor(es)

Lima, I. B. ^[1] ; Mangiarotti, A. ^{[2, 3]} ; Vivaldini, T. C. ^[1] ; Goncalves, J. A. C. ^{[1, 4]} ; Botelho, S. ^[4] ; Fonte, P. ^[5] ; Takahashi, J. ^[6] ; Tarelho, L. V. ^[1] ; Bueno, C. C. ^{[1, 4]}

Afiliação do(s) autor(es)

^[1] IPEN CNEN SP, BR-05508000 Sao Paulo - Brazil

^[2] Univ Coimbra, Dept Fis, Lab Instrumentacao & Fis Expt Particulas, P-3004516 Coimbra - Portugal

^[3] Univ Coimbra, Fac Ciencias & Tecnol, Dept Fis, P-3004516 Coimbra - Portugal

^[4] Pontificia Univ Catolica Sao Paulo, Dept Fis, BR-01303050 Sao Paulo - Brazil

^[5] Inst Super Engn Coimbra, P-3030199 Coimbra - Portugal

^[6] Univ Sao Paulo, Inst Fis, BR-05508090 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SP; v. 670, p. 55-60, APR 1 2012.
• Citações Web of Science: 7

Resumo

In this work we present results of the first Townsend coefficient (alpha) in pure isobutane by measuring the current growth as a function of the electric field strength in a pulsed irradiation regime. A Resistive Plate Chamber (RPC)-like configuration was used. To validate this method, as well as to crosscheck the experimental apparatus, measurements of the alpha parameter were firstly carried out with pure nitrogen and the results compared to the accurate data available in the literature. The data obtained with isobutane in a field range from 145 Td up to 200 Td were well-matched to those calculated with Magboltz versions 2.7.1 and 2.8.6. The experimental consistency of these results with other published data in the range of 550-1300 Td was very good, as demonstrated by the use of the Korff parameterization. (C) 2012 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 07/50591-4 - Alessio Mangiarotti | Universidade de Coimbra - Portugal
• Beneficiário: Carmen Cecília Bueno
• Modalidade de apoio: Auxílio à Pesquisa - Pesquisador Visitante - Internacional
• Processo FAPESP: 02/04697-1 - Medidas de parâmetros de transporte de elétrons em gases em regime de multiplicação
• Beneficiário: Carmen Cecília Bueno
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 09/51809-9 - Alessio Mangiarotti | Universidade de Coimbra - Portugal
• Beneficiário: Carmen Cecília Bueno
• Modalidade de apoio: Auxílio à Pesquisa - Pesquisador Visitante - Internacional