Quantum evolution of atomic states during transmission through solids
A quantum description of the evolution of atomic states of fast projectiles traveling through matter is presented. Our approach is based on the solution of a quantum Langevin equation, i.e., a time-dependent Schrodinger equation which describes electronic excitations of atoms or ions under the influ...
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2000
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0168583X_v164_n_p495_Arbo http://hdl.handle.net/20.500.12110/paper_0168583X_v164_n_p495_Arbo |
| Aporte de: |
| Sumario: | A quantum description of the evolution of atomic states of fast projectiles traveling through matter is presented. Our approach is based on the solution of a quantum Langevin equation, i.e., a time-dependent Schrodinger equation which describes electronic excitations of atoms or ions under the influence of the dynamically screened deterministic potential of the projectile and a stochastic force simulating the dissipative interaction with the solid. We present applications to the stripping of relativistic H- and the population dynamics of electronic substates of 13.6 MeV/u Ar17+ ions by transmission through carbon foils. We analyze the correspondence between classical and quantum transport simulations and we show that the stochastic nature of the interaction destroys most quantum effects. |
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