Influence of Positron Irradiation on Positronium Formation in n-Alkanes

• Authors: M. Pietrow , B. Zgardzińska
• Languages of publication: EN

Abstracts

EN

Positronium formation probability was investigated as a function of irradiation time and temperature for some long-chain saturated hydrocarbons (alkanes). Intensity of ortho-positronium component in the lifetime spectrum depends on the concentration of trapped excess electrons, but also on concentration of radicals and ions acting as electron scavengers. The results indicate the existence of two kinds of electron traps; those which are not emptied by thermal treatment disappear after several days of positron irradiation.

Keywords

EN

36.10.Dr; 61.80.Fe; 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.Fe: Electron and positron radiation effects

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2006
• Volume: 110
• Issue: 5
• Pages: 641-648

Dates

published

2006-11

received

2006-06-05

Contributors

author

M. Pietrow

• Department of Nuclear Methods, Institute of Physics, M. Curie Skłodowska University, pl. Marii Curie Skłodowskiej 1, 20-031 Lublin, Poland

author

B. Zgardzińska

• Department of Nuclear Methods, Institute of Physics, M. Curie Skłodowska University, pl. Marii Curie Skłodowskiej 1, 20-031 Lublin, Poland

References

• 1. O.E. Mogensen, J. Chem. Phys., 60, 998, 1974
• 2. V.M. Byakov, V.I. Goldanskii, V.P. Shantarovich, Dokl. Akad. Nauk SSSR, 219, 633, 1974
• 3. P. Kindl, G. Reiter, Phys. Status Solidi A, 104, 707, 1987
• 4. C. He, T. Suzuki, V.P. Shantarovich, L. Ma, M. Matsuo, K. Kondo, Y. Ito, Phys. Lett. A, 313, 223, 2003
• 5. T. Hirade, Radiat. Phys. Chem., 68, 375, 2003
• 6. Y. Ito, T. Hirade, E. Hamada, T. Suzuki, Y. Ito, Acta Phys. Pol. A, 95, 533, 1999
• 7. T. Hirade, F.H.J. Maurer, M. Eldrup, Radiat. Phys. Chem., 58, 465, 2000
• 8. C. He, V.P. Shantarovich, T. Suzuki, S.V. Stepanov, R. Suzuki, M. Matsuo, J. Chem. Phys., 122, 214907, 2005
• 9. S.V. Stepanov, V.M. Byakov, C. He, T. Hirade, K.V. Mikhin, V.I. Grafutin, in: Proc. 7th Int. Moscow School of Physics (32nd ITEP Winter School of Physics), Eds. A.L. Suvorov, F.S. Dzheparov, M.A. Kozodaev, S.V. Stepanov, Academprint, Moscow 2004, p. 183
• 10. J. Kansy, Nucl. Instrum. Methods A, 374, 235, 1996
• 11. T. Goworek, J. Wawryszczuk, R. Zaleski, B. Zgardzińska, to be published in Radiat. Phys. Chem

Identifiers

DOI

10.12693/APhysPolA.110.641