Ortho-Positronium in Alkanes under High Pressure

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

Abstracts

EN

Phase transitions in n-alkanes were observed by using the positron annihilation lifetime method. In the case of alkanes, application of pressure is equivalent to temperature lowering (1 K corresponds to ≈4 MPa). When argon at high pressure penetrates the sample one observes a non-monotonous dependence of the melting point on pressure. This effect is observed also in even-numbered alkanes, in which there is no rotator phase.

Keywords

EN

36.10.Dr; 61.80.Fe; 71.60.+z; 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)
• 71.60.+z: Positron states(for positron annihilation, see 78.70.Bj)
• 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: 2008
• Volume: 113
• Issue: 5
• Pages: 1379-1383

Dates

published

2008-05

received

2007-09-03

Contributors

author

T. Goworek

• Lublin Positron Group, UMCS, pl. Marii Curie-Skłodowskiej 1, 20-031 Lublin, Poland

author

B. Zgardzińska

• Lublin Positron Group, UMCS, pl. Marii Curie-Skłodowskiej 1, 20-031 Lublin, Poland

References

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• 4. T. Goworek, J. Wawryszczuk, R. Zaleski, Chem. Phys. Lett. 402, 367 (2005)
• 5. C. Josefiak, A. Wűrflinger, G.M. Schneider, Colloid Polymer Sci. 255, 170 (1977)
• 6. B. Zgardzińska, T. Goworek, R. Zaleski, J. Wawryszczuk, Chem. Phys. 3351, (2007)

Identifiers

DOI

10.12693/APhysPolA.113.1379