The significance of the amorphous potential energy landscape for dictating glassy dynamics and driving solid-state crystallisation

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Coherent control of excited state populations in rubidium using rabi oscillations

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Competition between photodetachment and photodissociation in O-2(-)

Contains fulltext : 103946.pdf (publisher's version ) (Open Access

Predissociation and autoionization of triplet Rydberg states in molecular hydrogen

Contains fulltext : 60171.pdf (publisher's version ) (Open Access)We present single-photon spectroscopy in molecular hydrogen starting from the metastable c(3)Pi(u)(-) state to a number of triplet nd-Rydberg states (v=0-4, n=12-20). Using fast beam spectroscopy both the autoionization channel and the predissociation channel are quantified, field free, as well as with small electric fields. Coupling with the i(3)Pi(g) state is assumed to be responsible for field-free predissociation of the v=0 Rydberg levels. The stronger observed predissociation channel of the v=1 Rydberg levels is due to the nonadiabatic interaction with the h(3)Sigma(g)(+) state in combination with l mixing due to an external electric field. No direct evidence is found for possible electric field induced predissociation of the gerade Rydberg states by low lying ungerade states. The competition between autoionization and predissociation is discussed in terms of possible consequences for dissociative recombination involving low energy electron collisions with the H-2(+) molecular ion. (C) 2004 American Institute of Physics

Collision induced absorption in the a(1)delta(nu=2) <- x-3 sigma(-)(g)(nu=0) band of molecular oxygen

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l-state selective field ionization of rubidium Rydberg states

Item does not contain fulltextState-selective field ionization is widely used for the state-selective detection of Rydberg states. We demonstrate a refinement of this technique which improves the selectivity and extends its use to E-states in heavy alkalis by employing shaped field ramps. We show the increased selectivity of field ionization by a fast step followed by a slow ramp in rubidium and apply this scheme to an electron scattering experiment, corroborating dipole selection rules in fast electron scattering induced excitation. (C) 2004 Elsevier B.V. All rights reserved

Effects of narrow-band pulse shaping on a resonant multilevel system

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Influence of waveguide dispersion on short-pulse free electron laser detuning curves

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