Formation of Quasi-Free and Bubble Positronium States in Water and Aqueous Solutions

• Authors: S. Stepanov , G. Duplâtre , V. Byakov , D. Zvezhinskiy , V. Subrahmanyam
• Languages of publication: EN

Abstracts

EN

It is shown that in aqueous solutions a positronium atom is first formed in the quasi-free state, and, after 50-100 ps, becomes localized in a nanobubble. Analysis of the annihilation spectra of NaNO_3 aqueous solutions shows that the hydrated electron is not involved in the positronium (Ps) formation.

Keywords

EN

71.60.+z; 34.80.Lx; 82.30.Gg

Discipline

• 71.60.+z: Positron states(for positron annihilation, see 78.70.Bj)
• 82.30.Gg: Positronium chemistry(see also 36.10.Dr Positronium in atomic and molecular physics; 78.70.Bj Positron annihilation in interactions of particles and radiation with matter)
• 34.80.Lx: Recombination, attachment, and positronium formation

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2014
• Volume: 125
• Issue: 3
• Pages: 770-774

Dates

published

2014-03

Contributors

author

S. Stepanov

• Institute for Theoretical and Experimental Physics, B. Cheremushkinskaya 25, 117218, Moscow, Russia
• National Research Nuclear University "MEPhI", Kashirskoye shosse 31, Moscow, 115409, Russia

author

G. Duplâtre

• Institut Pluridisciplinaire Hubert Curien, CNRS/IN2P3, BP 28 67037 Strasbourg, Cedex 2, France

author

V. Byakov

• Institute for Theoretical and Experimental Physics, B. Cheremushkinskaya 25, 117218, Moscow, Russia
• D. Mendeleyev University of Chemical Technology of Russia, Miusskaya sq., 9, 125047, Moscow, Russia

author

D. Zvezhinskiy

• Institute for Theoretical and Experimental Physics, B. Cheremushkinskaya 25, 117218, Moscow, Russia

author

V. Subrahmanyam

• Institut Pluridisciplinaire Hubert Curien, CNRS/IN2P3, BP 28 67037 Strasbourg, Cedex 2, France

References

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Identifiers

DOI

10.12693/APhysPolA.125.770