Double-ionization Compton profile of two-electron systems
The double-ionization Compton profile [Formula Presented] of a two-electron system is studied using highly correlated configuration-interaction–type wave functions for the initial state. For the case of helium we calculate the double-ionization profile using an uncorrelated double-continuum final st...
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| Autores principales: | , |
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| Publicado: |
1998
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10502947_v57_n6_p4490_Kornberg http://hdl.handle.net/20.500.12110/paper_10502947_v57_n6_p4490_Kornberg |
| Aporte de: |
| Sumario: | The double-ionization Compton profile [Formula Presented] of a two-electron system is studied using highly correlated configuration-interaction–type wave functions for the initial state. For the case of helium we calculate the double-ionization profile using an uncorrelated double-continuum final state, which is a good approximation for the kinematic conditions of high-momentum transfer. Excellent agreement with the predictions of the impulse approximation (IA) is obtained. However, the use of a double-continuum wave function accounts for an asymmetry in the profile, in contrast with the symmetric peak predicted by the IA. Results for other two-electron systems are presented within the IA, and the high-[Formula Presented] scaling property of the profile is found. The different momentum regions of the profile are discussed in terms of the physical mechanism of double ionization. © 1998 The American Physical Society. |
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