| Autor: |
Alexei M Frolov, Farrukh A Chishtie |
| Předmět: |
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| Zdroj: |
Journal of Physics A: Mathematical & Theoretical; Sep2007, Vol. 40 Issue 39, p11923-11937, 15p |
| Abstrakt: |
Annihilation of the electron-positron pairs (or (e[?], e+)-pairs, for short) in various polyelectrons e+ne[?]m = e[?]me+n (where n [?] 1 and m [?] 1) is considered. In particular, we discuss the three- and four-photon annihilation of the (e[?], e+)-pairs in the three-body Ps[?] ion and four-body bi-positronium system Ps2. It is shown that the five-body e+2e[?]3 ion is an unbound system. The closed-form expression is derived for the amplitude-square |M|2 of the three-photon annihilation of (e[?], e+)-pair at arbitrary energies of the colliding particles. Analogous amplitude-square |M|2 for the four-photon annihilation is reduced to the form which is convenient for future analytical calculations. A method which can be used to produce macroscopic polyelectrons is briefly discussed. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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