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Pregled bibliografske jedinice broj: 37760

Ionization coefficient in propane, propane-based tissue-equivalent and dimethyl-ether in strong non-uniform electric fields


Krajcar Bronić, Ines; Grosswendt, Bernd
Ionization coefficient in propane, propane-based tissue-equivalent and dimethyl-ether in strong non-uniform electric fields // Journal of Physics D : Applied Physics, 32 (1999), 3179-3187 (međunarodna recenzija, članak, znanstveni)


Naslov
Ionization coefficient in propane, propane-based tissue-equivalent and dimethyl-ether in strong non-uniform electric fields

Autori
Krajcar Bronić, Ines ; Grosswendt, Bernd

Izvornik
Journal of Physics D : Applied Physics (0022-3727) 32 (1999); 3179-3187

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Ionization coefficient; proportional counter; gas amplification; low-pressure gas

Sažetak
Gas amplification in a proportional counter filled with propane, propane-based tissue-equivalent gas mixture (propane-TE) and DME (Dimethyl-ether) is measured. By using low pressures (2 – 50 kPa) relatively strong reduced electric fields are produced, which enabled a study of non-equilibrium effects. Gas gain data are analysed according to the field-gradient model and the reduced ionisation coefficient alpha/P is thus obtained. The assumption of electrons being in equilibrium with electric field fails to be valid in low-pressure gases, where the electric field strengths at the anode surface, Sa, above about 5x105 V m-1kPa-1 are obtained. Under non-equilibrium conditions alpha/P is not a unique function of the reduced electric field strength, but depends on the gas pressure as well. Good agreement with other experimental or theoretical alpha/P obtained mostly under equilibrium conditions is obtained at relatively weak electric field strengths. The presented alpha/P in strong fields may be used for a more accurate modelling of low-pressure counters.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
00980207

Ustanove
Institut "Ruđer Bošković", Zagreb

Autor s matičnim brojem:
Ines Krajcar-Bronić, (112976)

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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