On the behavior of the n1(K, T)A n2 series of doubly excited states in He-like atoms immersed in weakly coupled plasmas
ABSTRACT: The stability of resonant states in Helium-like atoms while under the influence of a plasma environment is studied. We analyze the variation of resonance parameters (energies and lifetimes) against the strength of the screening parameter within the Debye-H¨uckel model. We use a Feshbach-li...
- Autores:
-
Ordóñez Lasso, Andrés Felipe
Cardona Gómez, Juan Carlos
Sanz Vicario, José Luis
- Tipo de recurso:
- Article of investigation
- Fecha de publicación:
- 2014
- Institución:
- Universidad de Antioquia
- Repositorio:
- Repositorio UdeA
- Idioma:
- eng
- OAI Identifier:
- oai:bibliotecadigital.udea.edu.co:10495/8377
- Acceso en línea:
- http://hdl.handle.net/10495/8377
- Palabra clave:
- Estados resonantes
Helio
Plasmas acoplados
- Rights
- openAccess
- License
- Atribución-NoComercial-SinDerivadas 2.5 Colombia
| Summary: | ABSTRACT: The stability of resonant states in Helium-like atoms while under the influence of a plasma environment is studied. We analyze the variation of resonance parameters (energies and lifetimes) against the strength of the screening parameter within the Debye-H¨uckel model. We use a Feshbach-like projection formalism with explicitly correlated CI-wave functions to uncover the evolution of resonance parameters until they cross the upper Aq+ (N=2) threshold, and a complex scaling method to analyze the survival of these Feshbach resonances across the threshold, which eventually makes them behave as shape resonances. |
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