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  • Aircraft Propulsion and Power  (8)
  • Atomic and molecular processes in external fields, including interactions with strong fields and short pulses  (7)
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  • 1
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    Rotational dynamics of an asymmetric-top molecule in parallel electric and nonresonant laser fields (2013)
    American Physical Society (APS)
    Details
    Publication Date: 2013-09-18
    Description: Author(s): Juan J. Omiste and Rosario González-Férez We present a theoretical study of the rotational dynamics of asymmetric-top molecules in an electric field and a parallel nonresonant linearly polarized laser pulse. The time-dependent Schrödinger equation is solved within the rigid rotor approximation. Using the benzonitrile molecule as a prototype... [Phys. Rev. A 88, 033416] Published Tue Sep 17, 2013
    Keywords: Atomic and molecular processes in external fields, including interactions with strong fields and short pulses
    Print ISSN: 1050-2947
    Electronic ISSN: 1094-1622
    Topics: Physics
    Published by American Physical Society (APS)
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  • 2
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    Enhancing photoassociation rates by nonresonant-light control of shape resonances (2012)
    American Physical Society (APS)
    Details
    Publication Date: 2012-12-27
    Description: 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
    Keywords: Atomic and molecular processes in external fields, including interactions with strong fields and short pulses
    Print ISSN: 1050-2947
    Electronic ISSN: 1094-1622
    Topics: Physics
    Published by American Physical Society (APS)
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  • 3
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    Strongly driven quantum pendulum of the carbonyl sulfide molecule (2014)
    American Physical Society (APS)
    Details
    Publication Date: 2014-05-06
    Description: Author(s): Sebastian Trippel, Terry Mullins, Nele L. M. Müller, Jens S. Kienitz, Juan J. Omiste, Henrik Stapelfeldt, Rosario González-Férez, and Jochen Küpper We demonstrate and analyze a strongly driven quantum pendulum in the angular motion of state-selected and laser-aligned carbonyl sulfide molecules. Raman couplings during the rising edge of a 50-ps laser pulse create a wave packet of pendular states, which propagates in the confining potential forme... [Phys. Rev. A 89, 051401] Published Mon May 05, 2014
    Keywords: Atomic and molecular processes in external fields, including interactions with strong fields and short pulses
    Print ISSN: 1050-2947
    Electronic ISSN: 1094-1622
    Topics: Physics
    Published by American Physical Society (APS)
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  • 4
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    Laser-induced alignment of weakly bound molecular aggregates (2018)
    American Physical Society (APS)
    Details
    Publication Date: 2018-11-13
    Description: Author(s): Linda V. Thesing, Andrey Yachmenev, Rosario González-Férez, and Jochen Küpper The rotational and torsional dynamics of the prototypical floppy indole ( H 2 O ) molecular cluster was theoretically and computationally analyzed. The time-dependent Schrödinger equation was solved for a reduced-dimensionality description of the cluster, taking into account overall rotations and the int... [Phys. Rev. A 98, 053412] Published Mon Nov 12, 2018
    Keywords: Atomic and molecular processes in external fields, including interactions with strong fields and short pulses
    Print ISSN: 1050-2947
    Electronic ISSN: 1094-1622
    Topics: Physics
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  • 5
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    Controlling the s-wave scattering length with nonresonant light: Predictions of an asymptotic model (2017)
    American Physical Society (APS)
    Details
    Publication Date: 2017-02-14
    Description: Author(s): Anne Crubellier, Rosario González-Férez, Christiane P. Koch, and Eliane Luc-Koenig A pair of atoms interacts with nonresonant light via its anisotropic polarizability. This effect can be used to tune the scattering properties of the atoms. Although the light-atom interaction varies with interatomic separation as 1 / R 3 , the effective s -wave potential decreases more rapidly as 1 / R 4 s… [Phys. Rev. A 95, 023405] Published Wed Feb 08, 2017
    Keywords: Atomic and molecular processes in external fields, including interactions with strong fields and short pulses
    Print ISSN: 1050-2947
    Electronic ISSN: 1094-1622
    Topics: Physics
    Published by American Physical Society (APS)
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  • 6
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    Nonadiabatic effects in long-pulse mixed-field orientation of a linear polar molecule (2012)
    American Physical Society (APS)
    Details
    Publication Date: 2012-11-01
    Description: Author(s): Juan J. Omiste and Rosario González-Férez We present a theoretical study of the impact of an electrostatic field combined with nonresonant linearly polarized laser pulses on the rotational dynamics of linear molecules. Within the rigid rotor approximation, we solve the time-dependent Schrödinger equation for several field configurations. Us... [Phys. Rev. A 86, 043437] Published Wed Oct 31, 2012
    Keywords: Atomic and molecular processes in external fields, including interactions with strong fields and short pulses
    Print ISSN: 1050-2947
    Electronic ISSN: 1094-1622
    Topics: Physics
    Published by American Physical Society (APS)
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  • 7
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    Theoretical description of the mixed-field orientation of asymmetric-top molecules: A time-dependent study (2016)
    American Physical Society (APS)
    Details
    Publication Date: 2016-12-10
    Description: Author(s): Juan J. Omiste and Rosario González-Férez We present a theoretical study of the mixed-field-orientation of asymmetric-top molecules in tilted static electric field and nonresonant linearly polarized laser pulse by solving the time-dependent Schrödinger equation. Within this framework, we compute the mixed-field orientation of a state-select… [Phys. Rev. A 94, 063408] Published Fri Dec 09, 2016
    Keywords: Atomic and molecular processes in external fields, including interactions with strong fields and short pulses
    Print ISSN: 1050-2947
    Electronic ISSN: 1094-1622
    Topics: Physics
    Published by American Physical Society (APS)
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  • 8
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    Green Propulsion Technologies for Advanced Air Transports (2015)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Air transportation is critical to U.S. and Global economic vitality. However, energy and climate issues challenge aviations ability to be sustainable in the long term. Aviation must dramatically reduce fuel use and related emissions. Energy costs to U.S. airlines nearly tripled between 1995 and 2011, and continue to be the highest percentage of operating costs. The NASA Advanced Air Transports Technology Project addresses the comprehensive challenge of enabling revolutionary energy efficiency improvements in subsonic transport aircraft combined with dramatic reductions in harmful emissions and perceived noise to facilitate sustained growth of the air transportation system. Advanced technologies and the development of unconventional aircraft systems offer the potential to achieve these improvements. The presentation will highlight the NASA vision of revolutionary systems and propulsion technologies needed to achieve these challenging goals. Specifically, the primary focus is on the N+3 generation; that is, vehicles that are three generations beyond the current state of the art, requiring mature technology solutions in the 2025-30 timeframe, which are envisioned as being powered by Hybrid Electric Propulsion Systems.
    Keywords: Aircraft Propulsion and Power
    Type: GRC-E-DAA-TN23468 , AIAA Distinguished Lectureship; May 12, 2015; Cleveland, OH; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 9
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    Electrified Aircraft Propulsion Development (2018)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The benefits of electrified aircraft propulsion improves aircrafts like single aisle transports, enables new configurations of vertical take-off landing aircrafts and revitalizes the economic case for small short-range aircraft services. Future strategies and markets for supersonic and commercial transport are proposed.
    Keywords: Aircraft Propulsion and Power
    Type: GRC-E-DAA-TN58749 , AIAA Propulsion & Energy Forum; Jul 09, 2018 - Jul 11, 2018; Cincinnati, OH; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 10
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    Green Propulsion Technologies for Advanced Air Transports (2015)
    In:  CASI
    Details
    Publication Date: 2019-09-20
    Description: Air transportation is critical to U.S. and Global economic vitality. However, energy and climate issues challenge aviation's ability to be sustainable in the long term. Aviation must dramatically reduce fuel use and related emissions. Energy costs to U.S. airlines nearly tripled between 1995 and 2011, and continue to be the highest percentage of operating costs. The NASA Advanced Air Transports Technology Project addresses the comprehensive challenge of enabling revolutionary energy efficiency improvements in subsonic transport aircraft combined with dramatic reductions in harmful emissions and perceived noise to facilitate sustained growth of the air transportation system. Advanced technologies and the development of unconventional aircraft systems offer the potential to achieve these improvements. The presentation will highlight the NASA vision of revolutionary systems and propulsion technologies needed to achieve these challenging goals. Specifically, the primary focus is on the N+3 generation; that is, vehicles that are three generations beyond the current state of the art, requiring mature technology solutions in the 2025-30 timeframe.
    Keywords: Aircraft Propulsion and Power
    Type: GRC-E-DAA-TN20707 , OSU Aerospace Graduate Student Seminar; Jan 30, 2015; Columbus, OH; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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