A comprehensive model of Penning energy transfers in Ar-CO2 mixtures

Sahin Ö., Kowalski T. Z.

JOURNAL OF INSTRUMENTATION, vol.12, 2017 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 12
  • Publication Date: 2017
  • Doi Number: 10.1088/1748-0221/12/01/c01035
  • Journal Name: JOURNAL OF INSTRUMENTATION
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Keywords: Gaseous detectors, Ionization and excitation processes, Charge transport and multiplication in gas, Detector modelling and simulations II (electric fields, charge transport, multiplication and induction, pulse formation, electron emission, etc), ARGON-ISOBUTANE MIXTURES, CROSS-SECTIONS, NOBLE-GASES, PURE ARGON, IONIZATION, PHOTOIONIZATION, DISCHARGE, PRESSURE
  • Bursa Uludag University Affiliated: Yes

Abstract

Ionizing energy transfer mechanisms due to the excited argon atoms, called Penning transfers, have been investigated for various Ar-CO2 mixtures at 0.4, 0.8, 1.2 and 1.8 atm gas pressures. The Penning energy transfer probabilities are extracted from the systematic gas gain measurements carried out in cylindrical proportional counters. In this report, contributions of the several transfer processes are identified by studying the pressure and mixing proportion dependence of the transfer rates with a model.