**Rydberg and continuum states of atoms in external fields.** / Mota-Furtado, F.; O'Mahony, Pat; Marxer, H.

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**Rydberg and continuum states of atoms in external fields.** / Mota-Furtado, F.; O'Mahony, Pat; Marxer, H.

Research output: Contribution to journal › Article

Mota-Furtado, F, O'Mahony, P & Marxer, H 1993, 'Rydberg and continuum states of atoms in external fields', *AIP Conference Proceedings*, pp. 198-207. https://doi.org/10.1063/1.45238

Mota-Furtado, F., O'Mahony, P., & Marxer, H. (1993). Rydberg and continuum states of atoms in external fields. *AIP Conference Proceedings*, 198-207. https://doi.org/10.1063/1.45238

Mota-Furtado F, O'Mahony P, Marxer H. Rydberg and continuum states of atoms in external fields. AIP Conference Proceedings. 1993;198-207. https://doi.org/10.1063/1.45238

@article{9e7ac8205310487c98f970b16febed73,

title = "Rydberg and continuum states of atoms in external fields",

abstract = "A general theory is presented to calculate the Rydberg and continuum states of an atom or molecule in external magnetic and parallel or crossed magnetic and electric fields of arbitrary strength. We show how the photoabsorbtion and photoionization spectra can be obtained for an atom or molecule at any excitation energy and we demonstrate how the complex resonance structure present in the classically chaotic energy region of the spectrum can be analyzed and understood. Results are presented for lithium in magnetic fields of 6.1 T and for hydrogen and rubidium in crossed magnetic and electric fields of intensity 6 T and 2975 Vcm, respectively. The theory combines quantum-defect theory, R-matrix propagation, and two and three-dimensional frame transformations. Much of the observed experimental resonance structure in the continuum can be understood in terms of complex perturbed Rydberg series.",

keywords = "Electronic structure of atoms and molecules: theory. Excited states. Atomic spectra and interactions with photons. Photon interactions with atoms. Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states). Molecular spectra and interactions of molecules with photons. Photon interactions with molecules. Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states).",

author = "F. Mota-Furtado and Pat O'Mahony and H. Marxer",

year = "1993",

doi = "http://dx.doi.org/10.1063/1.45238",

language = "English",

pages = "198--207",

journal = "AIP Conference Proceedings",

issn = "0094-243X",

publisher = "American Institute of Physics",

}

TY - JOUR

T1 - Rydberg and continuum states of atoms in external fields

AU - Mota-Furtado, F.

AU - O'Mahony, Pat

AU - Marxer, H.

PY - 1993

Y1 - 1993

N2 - A general theory is presented to calculate the Rydberg and continuum states of an atom or molecule in external magnetic and parallel or crossed magnetic and electric fields of arbitrary strength. We show how the photoabsorbtion and photoionization spectra can be obtained for an atom or molecule at any excitation energy and we demonstrate how the complex resonance structure present in the classically chaotic energy region of the spectrum can be analyzed and understood. Results are presented for lithium in magnetic fields of 6.1 T and for hydrogen and rubidium in crossed magnetic and electric fields of intensity 6 T and 2975 Vcm, respectively. The theory combines quantum-defect theory, R-matrix propagation, and two and three-dimensional frame transformations. Much of the observed experimental resonance structure in the continuum can be understood in terms of complex perturbed Rydberg series.

AB - A general theory is presented to calculate the Rydberg and continuum states of an atom or molecule in external magnetic and parallel or crossed magnetic and electric fields of arbitrary strength. We show how the photoabsorbtion and photoionization spectra can be obtained for an atom or molecule at any excitation energy and we demonstrate how the complex resonance structure present in the classically chaotic energy region of the spectrum can be analyzed and understood. Results are presented for lithium in magnetic fields of 6.1 T and for hydrogen and rubidium in crossed magnetic and electric fields of intensity 6 T and 2975 Vcm, respectively. The theory combines quantum-defect theory, R-matrix propagation, and two and three-dimensional frame transformations. Much of the observed experimental resonance structure in the continuum can be understood in terms of complex perturbed Rydberg series.

KW - Electronic structure of atoms and molecules: theory. Excited states. Atomic spectra and interactions with photons. Photon interactions with atoms. Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states). Molecular spectra and

U2 - http://dx.doi.org/10.1063/1.45238

DO - http://dx.doi.org/10.1063/1.45238

M3 - Article

SP - 198

EP - 207

JO - AIP Conference Proceedings

JF - AIP Conference Proceedings

SN - 0094-243X

ER -