Positronium Formation with Trapped Electrons in n-Alkanes

• Authors: B. Zgardzińska , T. Goworek
• Languages of publication: EN

Abstracts

EN

Positronium (Ps) formation during self-irradiation by positrons was observed in n-alkanes of various carbon chain length. The rise of Ps intensity with time of irradiation is the result of positronium formation with trapped excess electrons. In the range T < 190 K the saturation value of positronium intensity changes with temperature mainly due to the change of positron mobility. With the increase of the irradiation dose the process of charging traps is slowing down and this effect is ruled mainly by interaction of excess electrons with ionization products during electron's migration to the traps.

Keywords

EN

36.10.Dr; 36.20.Fz; 61.80.-x; 72.20.Jv; 78.70.Bj

Discipline

• 78.70.Bj: Positron annihilation(for positron states, see 71.60.+z in electronic structure of bulk materials; for positronium chemistry, see 82.30.Gg in physical chemistry and chemical physics)
• 36.10.Dr: Positronium(see also 82.30.Gg Positronium chemistry)
• 61.80.-x: Physical radiation effects, radiation damage(for photochemical reactions, see 82.50.-m; for effects of ionizing radiation on biological systems, see 87.53.-j)
• 72.20.Jv: Charge carriers: generation, recombination, lifetime, and trapping
• 36.20.Fz: Constitution (chains and sequences)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2011
• Volume: 119
• Issue: 3
• Pages: 328-331

Dates

published

2011-03

received

2010-03-17

(unknown)

2010-12-05

Contributors

author

B. Zgardzińska

• Institute of Physics, Maria Curie-Skłodowska University, pl. Marii Curie-Skłodowskiej 1, 20-031 Lublin, Poland

author

T. Goworek

• Institute of Physics, Maria Curie-Skłodowska University, pl. Marii Curie-Skłodowskiej 1, 20-031 Lublin, Poland

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Identifiers

DOI

10.12693/APhysPolA.119.328