The W Values for Photons and Electrons in Mixtures of Argon and Alkanes
| Autor: | Ines Krajcar Bronić, Dušan Srdoč, Bogomil Obelić, Ines Krajcar Bronic, Dusan Srdoc, Bogomil Obelic |
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| Rok vydání: | 1991 |
| Předmět: |
Radiation
Argon W values Fano factor Alkanes Chemistry Polyatomic ion Intermolecular force Biophysics chemistry.chemical_element Partial pressure Electron Ion Yield (chemistry) Ionization Physics::Atomic and Molecular Clusters Radiology Nuclear Medicine and imaging Physics::Chemical Physics Atomic physics |
| Zdroj: | Radiation Research. 125:1 |
| ISSN: | 0033-7587 |
| DOI: | 10.2307/3577974 |
| Popis: | The mean energy required to form an ion pair for 5.89-keV55 Fe and 1.49-keV Al photons in mixtures of argon-methane and argon-butane gas was measured using the proportional-counter technique. The measured W values in the mixtures are lower than what is expected for regular mixtures, i.e., mixtures without an appreciable intermolecular energy transfer between the mixture components. The additional ionization yield through the nonmetastable Penning processes reaches a maximum abruptly at very low partial pressure of polyatomic admixtures (alkanes), decreasing steadily with higher admixture partial pressure. |
| Databáze: | OpenAIRE |
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