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Academic literature on the topic 'Autoionization Feshbach resonances'

Author: Grafiati
Published: 10 December 2022
Last updated: 29 January 2023

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Journal articles on the topic "Autoionization Feshbach resonances"

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Bhatia, Anand K. "Resonances in Systems Involving Positrons." Atoms 8, no. 2 (May 7, 2020): 20. http://dx.doi.org/10.3390/atoms8020020.

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When an incident particle on a target gets attached to the target, the cross-section at that energy could be much larger compared to those at other energies. This is a short-lived state and decays by emitting an electron. Such states can also be formed by the absorption of a photon. Such states are below the higher thresholds and are called autoionization states, doubly excited states, or Feshbach resonances. There is also a possibility of such states to form above the thresholds. Then they are called shape resonances. Resonances are important in the diagnostic of solar and astrophysical plasmas. Some methods of calculating the resonance parameters are described and resonance parameters occurring in various systems are given.
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Gagnon, Etienne, Vandana Sharma, Wen Li, Robin Santra, Phay Ho, Predrag Ranitovic, C. L. Cocke, Margaret M. Murnane, Henry C. Kapteyn, and Arvinder S. Sandhu. "Autoionization dynamics and Feshbach resonances: Femtosecond EUV study of O2excitation and dissociation." Journal of Physics: Conference Series 194, no. 1 (November 1, 2009): 012014. http://dx.doi.org/10.1088/1742-6596/194/1/012014.

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Vittorini-Orgeas, Alessandra, and Antonio Bianconi. "From Majorana Theory of Atomic Autoionization to Feshbach Resonances in High Temperature Superconductors." Journal of Superconductivity and Novel Magnetism 22, no. 3 (January 7, 2009): 215–21. http://dx.doi.org/10.1007/s10948-008-0433-x.

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Sajeev, Y., and Nimrod Moiseyev. "Reflection-free complex absorbing potential for electronic structure calculations: Feshbach-type autoionization resonances of molecules." Journal of Chemical Physics 127, no. 3 (July 21, 2007): 034105. http://dx.doi.org/10.1063/1.2753485.

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Sajeev, Y., Milan Sindelka, and Nimrod Moiseyev. "Reflection-free complex absorbing potential for electronic structure calculations: Feshbach type autoionization resonance of Helium." Chemical Physics 329, no. 1-3 (October 2006): 307–12. http://dx.doi.org/10.1016/j.chemphys.2006.08.008.

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Oliveira, Andre Pacheco, Ginette Jalbert, and Alexandre B. Rocha. "Fano-Feshbach Formalism Applied to the Calculation of Autoionization Widths through Analytic Continuation." Journal of Chemical Physics, June 13, 2022. http://dx.doi.org/10.1063/5.0094855.

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A method to calculate the autoionization width from a discretized pseudo-spectrum is proposed. The method relies on an analytic continuation of the Green's function within the Fano-Feshbach formalism. The pseudo-spectrum is obtained at multireference Configuration Interaction level in a square-integrable basis set, commonly found in quantum chemistry software. Few states around the desired resonance are needed to perform the analytic continuation. The method was applied to atomic (He and Ne) and molecular (HF and benzene) systems and results for the autoionization width show good agreement with available theoretical and experimental values.
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Book chapters on the topic "Autoionization Feshbach resonances"

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Chung, Kwong T., and Brian F. Davis. "Hole-Projection Method for Calculating Feshbach Resonances and Inner-Shell Vacancies." In Autoionization, 73–102. Boston, MA: Springer US, 1985. http://dx.doi.org/10.1007/978-1-4684-4877-1_3.

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