Artículos de revistas
Multimode Vibrational Couplings In Resonant Positron Annihilation
Registro en:
Physical Review Letters. , v. 107, n. 10, p. - , 2011.
319007
10.1103/PhysRevLett.107.103201
2-s2.0-80052233734
Autor
D'A.Sanchez S.
Lima M.A.P.
Varella M.T.D.N.
Institución
Resumen
The mechanisms for multimode vibrational couplings in resonant positron annihilation are not well understood. We show that these resonances can arise from positron-induced distortions of the potential energy surface (target response to the positron field). Though these distortions can transfer energy into single- and multiquantum vibrations, they have so far been disregarded as a pathway to resonant annihilation. We also compare the existing annihilation theories and show that the currently accepted model can be cast as a special case of the Feshbach annihilation theory. © 2011 American Physical Society. 107 10
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