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1

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Attosecond time-delay spectroscopy of the hydrogen molecule (2012)

I. A. Ivanov, A. S. Kheifets, and Vladislav V. Serov

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2012-12-28

Beschreibung: Author(s): I. A. Ivanov, A. S. Kheifets, and Vladislav V. Serov We apply the concept of photoemission time delay to the process of single-photon one-electron ionization of the H 2 molecule. We demonstrate that, by resolving the photoelectron detection in time on the attosecond scale, one can extract differential photoionization cross sections for particular field... [Phys. Rev. A 86, 063422] Published Thu Dec 27, 2012

Schlagwort(e): Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

Print ISSN: 1050-2947

Digitale ISSN: 1094-1622

Thema: Physik

Publiziert von American Physical Society (APS)

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2

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Diagrammatic approach to attosecond delays in photoionization (2012)

J. M. Dahlström, T. Carette, and E. Lindroth

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2012-12-28

Beschreibung: Author(s): J. M. Dahlström, T. Carette, and E. Lindroth We study laser-assisted photoionization by attosecond pulses using a time-independent formalism based on diagrammatic many-body perturbation theory. Our aim is to provide an ab initio route to the “delays” for this above-threshold ionization process, which is essential for a quantitative understandi... [Phys. Rev. A 86, 061402] Published Thu Dec 27, 2012

Schlagwort(e): Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

Print ISSN: 1050-2947

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Thema: Physik

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3

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Influence of multiple ionization thresholds on harmonic generation from Ar^{+} (2012)

A. C. Brown and H. W. van der Hart

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2012-12-27

Beschreibung: Author(s): A. C. Brown and H. W. van der Hart We apply time-dependent R -matrix theory to investigate harmonic generation from ground-state Ar + with M =0 at a wavelength of 390 nm. Contributions associated with the different 3 s 2 3 p 4 ionization thresholds are assessed, including the interference between these. The dominant contribution originates f... [Phys. Rev. A 86, 063416] Published Wed Dec 26, 2012

Schlagwort(e): Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

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Thema: Physik

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Optimal-control theory of harmonic generation (2012)

Ido Schaefer and Ronnie Kosloff

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2012-12-27

Beschreibung: Author(s): Ido Schaefer and Ronnie Kosloff Coherent control of harmonic generation was studied theoretically. A specific harmonic order was targeted. An optimal control theory was employed to find the driving field where restrictions were imposed on the frequency band. Additional restrictions were added to suppress undesired outcomes, such a... [Phys. Rev. A 86, 063417] Published Wed Dec 26, 2012

Schlagwort(e): Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

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Thema: Physik

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5

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Excitation of Rydberg wave packets with chirped laser pulses (2012)

J. Preclíková, M. Kozák, D. Fregenal, Ø. Frette, B. Hamre, B. T. Hjertaker, J. P. Hansen, and L. Kocbach

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2012-12-27

Beschreibung: Author(s): J. Preclíková, M. Kozák, D. Fregenal, Ø. Frette, B. Hamre, B. T. Hjertaker, J. P. Hansen, and L. Kocbach We study Rydberg wave packets produced by pairs of time separated femtosecond laser pulses. The time separation ranges from femtosecond to picosecond time scales. The wave packets consist predominantly of f states of principal quantum numbers n =22–32 in Li. With a direct analysis of the field ioniza... [Phys. Rev. A 86, 063418] Published Wed Dec 26, 2012

Schlagwort(e): Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

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6

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Evidence of sympathetic cooling of Na^{+} ions by a Na magneto-optical trap in a hybrid trap (2012)

I. Sivarajah, D. S. Goodman, J. E. Wells, F. A. Narducci, and W. W. Smith

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2012-12-27

Beschreibung: Author(s): I. Sivarajah, D. S. Goodman, J. E. Wells, F. A. Narducci, and W. W. Smith A hybrid ion-neutral trap provides an ideal system to study collisional dynamics between ions and neutral atoms. This system provides a general cooling method that can be applied to species that do not have optically accessible transitions and can also potentially cool internal degrees of freedom. T... [Phys. Rev. A 86, 063419] Published Wed Dec 26, 2012

Schlagwort(e): Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

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Thema: Physik

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7

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Enhancing photoassociation rates by nonresonant-light control of shape resonances (2012)

Rosario González-Férez and Christiane P. Koch

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2012-12-27

Beschreibung: Author(s): Rosario González-Férez and Christiane P. Koch Photoassociation, assembling molecules from atoms using laser light, is limited by the low density of atom pairs at sufficiently short interatomic separations. Here we show that nonresonant light with intensities of the order of 10 10 W/cm 2 modifies the thermal cloud of atoms, enhancing the Boltzmann... [Phys. Rev. A 86, 063420] Published Wed Dec 26, 2012

Schlagwort(e): Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

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8

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Hybrid model for Rydberg gases including exact two-body correlations (2012)

Kilian P. Heeg, Martin Gärttner, and Jörg Evers

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2012-12-27

Beschreibung: Author(s): Kilian P. Heeg, Martin Gärttner, and Jörg Evers A model for the simulation of ensembles of laser-driven Rydberg-Rydberg interacting multilevel atoms is discussed. Our hybrid approach combines an exact two-body treatment of nearby atom pairs with an effective approximate treatment for spatially separated pairs. We propose an optimized evolution eq... [Phys. Rev. A 86, 063421] Published Wed Dec 26, 2012

Schlagwort(e): Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

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9

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Control of electron localization in the dissociation of H_{2}^{+} using orthogonally polarized two-color sequential laser pulses (2012)

Feng He

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2012-12-21

Beschreibung: Author(s): Feng He Orthogonally polarized two-color sequential laser pulses are used to control the electron localization in the dissociation of H 2 + . The first single attosecond pulse, whose polarization axis is perpendicular to the molecular axis, excites H 2 + from 1 s σ g to 2 p π u , and the time-delayed infrared pulse, wh... [Phys. Rev. A 86, 063415] Published Thu Dec 20, 2012

Schlagwort(e): Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

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10

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Directional spinning of molecules with sequences of femtosecond pulses (2012)

C. Bloomquist, S. Zhdanovich, A. A. Milner, and V. Milner

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2012-12-20

Beschreibung: Author(s): C. Bloomquist, S. Zhdanovich, A. A. Milner, and V. Milner We present an analysis of two experimental approaches to controlling the directionality of molecular rotation with ultrashort laser pulses. The two methods are based on the molecular interaction with either a pair of pulses (a “double-kick” scheme) or a longer pulse sequence (a “chiral-pulse-train” ... [Phys. Rev. A 86, 063413] Published Wed Dec 19, 2012

Schlagwort(e): Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

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Thema: Physik

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