Recent Changes

Tuesday, September 30

  1. page Hiking in and around Santa Barbara edited ... ARROYO BURRO BEACH AND/OR DOUGLAS PRESERVE EXCURSION Advantages: Easy to get to, plenty of pa…
    ...
    ARROYO BURRO BEACH AND/OR DOUGLAS PRESERVE EXCURSION
    Advantages: Easy to get to, plenty of parking, nice restaurant on the beach for a happy hour before/after a walk or hike, no problem with tides, no problem with tar on the beach, beautiful views.
    ...
    the map (Screen_shot_2010-08-11_at_1.42.46_PM_3.png)( Screen_shot_2010-08-11_at_1.42.46_PM_3.png {Screen_shot_2010-08-11_at_1.42.46_PM_3.png} ) and the photo (Screen_shot_2010-08-11_at_1.46.38_PM_3.png)( Screen_shot_2010-08-11_at_1.46.38_PM_3.png {Screen_shot_2010-08-11_at_1.46.38_PM_3.png} ) provided by
    http://www.santabarbara.com/virtual_tour/beaches/hendrys
    A link on that page describes the Douglas Preserve. From the attached photo, you can see the parking lot. To the west one can walk for miles along the beach. From the top end of the parking lot one can enter the Douglas Preserve on top of the bluff with spectacular views. An hour can be spent in the preserve and as long as one wishes to walk west on the beach. Thus one can do both in the same afternoon, perhaps stopping for happy hour at the Boathouse restaurant.
    (view changes)
    8:28 am

Wednesday, October 13

  1. 8:40 pm

Thursday, September 2

  1. page Yet another minimum in high harmonic generation edited Yet another minimum in high harmonic generation Alex Harvey ... recombination events at at …
    Yet another minimum in high harmonic generation
    Alex Harvey
    ...
    recombination events
    at
    at all timescales,
    ...
    electron-molecule scattering
    embedded
    embedded in the
    ...
    allows us
    to
    to filter out
    ...
    experiments. Our
    method
    method allows us
    ...
    exposure times
    and
    and thus get
    ...
    electron –
    molecule
    molecule scattering. I
    (view changes)
    4:13 pm
  2. page Yet another minimum in high harmonic generation edited Yet another minimum in high harmonic generation Alex Harvey In high harmonic generation experime…
    Yet another minimum in high harmonic generation
    Alex Harvey
    In high harmonic generation experiments harmonic emission occurs within a fraction of the period of the driving laser field. Current state of the art models of high harmonic generation use recombination matrix elements calculated within sophisticated, field-free, time-independent approaches. However these recombination matrix elements include recombination events
    at all timescales, such as long lived resonances.
    In this talk I show how to extract temporal information about electron-molecule scattering
    embedded in the conventional time-independent recombination matrix elements. This allows us
    to filter out the scattering events relevant for high harmonic generation experiments. Our
    method allows us to take snapshots of recombination dynamics with different exposure times
    and thus get insight into the dynamics of formation, life, and decay of resonances in electron –
    molecule scattering. I consider an example of a shape resonance in the nitrogen molecule and discuss implications for high harmonic experiments.

    (view changes)
    4:13 pm
  3. page Talks & Discussions edited ... Aud Alex Harvey Yet another minimum in high harmonic generation place*Aud=Auditorium, SSR…
    ...
    Aud
    Alex Harvey
    Yet another minimum in high harmonic generation
    place*Aud=Auditorium, SSR=Small Seminar Room, MSR=Main Seminar Room FR=Founders' Room
    ⬆TOP
    (view changes)
    4:11 pm

Monday, August 30

  1. page Modeling strong-field processes in (almost) real molecules edited ... have so far been limited to at most two electrons and/or low-dimensional models. Larger prob…
    ...
    have so far been limited to at most two electrons and/or low-dimensional
    models. Larger problems of practical interest are usually treated with
    ...
    one-electron Hamiltonians. WeWe have recently
    approach [1] for ab initio simulation of electron dynamics of molecules
    in atoms in molecules. The technique is based on: a) use of
    (view changes)
    6:34 pm

Friday, August 27

  1. page Non-adiabatic effects in molecular systems edited Non-adiabatic effects in molecular systems Agnes Vibok Abstract: By separating the motion of th…
    Non-adiabatic effects in molecular systems
    Agnes Vibok
    Abstract:By separating the motion of the rapidly moving electrons and the slowly mov-
    ing nuclei in a molecular system the Born-Oppenheimer approximation usually
    can treat the dynamical process in a molecule after absorbing a photon. In
    this scheme the nuclei move over a potential energy surface (PES) provided by
    the electronic (adiabatic) eigenstates and therefore electrons and nuclei do not
    easily exchange energy. Although several chemical and physical processes can
    be rationalized on a single Born-Oppenheimer PES, there is no doubt that in
    many important cases like radiationless relaxation of excited electronic states,
    dissociation, proton transfer or isomerization processes of polyatomic molecules
    etc. this approximation breaks down. The nuclear and electronic motion then
    couple and so called conical intersection (CI) arises. In this situation the energy
    exchange between the electrons and nuclei can become signicant. The CIs play
    an important role in the radiationless deactivation processes of the excited state
    systems as they can provide pathway for ultrafast interstate crossing on the
    femtosecond timescale. CIs can be evolved between different electronic states
    starting from triatomic systems to a truly large polyatomic molecules.
    It was also shown that molecules interacting with standing [1] or running [2]
    laser waves can produce CIs. The presence of such CIs offers new possibilities
    to control the photo-induced molecular dynamics.
    [1] N. Moiseyev, M. Sindelka and L.S. Cederbaum, J. Phys. B: At. Mol. Opt.
    Phys. 41 (2008) 221001.
    [2] M. Sindelka, N. Moiseyev and L.S. Cederbaum, http://arxiv.org/abs/1008.0741.
    Abstract as PDF-file:
    {agnes_vibok-abstract.pdf}
    (view changes)
    11:35 am
  2. page Talks & Discussions edited ... 10:00am Aud ... Vibok or Gabor Gabor Halasz Non-adiabatic effects in molecular syste…
    ...
    10:00am
    Aud
    ...
    Vibok or
    Gabor
    Gabor Halasz
    Non-adiabatic effects in molecular systems
    Wed, Sep 8
    (view changes)
    11:34 am

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