72 research outputs found
Localization-delocalization transition of a reaction-diffusion front near a semipermeable wall
The A+B --> C reaction-diffusion process is studied in a system where the
reagents are separated by a semipermeable wall. We use reaction-diffusion
equations to describe the process and to derive a scaling description for the
long-time behavior of the reaction front. Furthermore, we show that a critical
localization-delocalization transition takes place as a control parameter which
depends on the initial densities and on the diffusion constants is varied. The
transition is between a reaction front of finite width that is localized at the
wall and a front which is detached and moves away from the wall. At the
critical point, the reaction front remains at the wall but its width diverges
with time [as t^(1/6) in mean-field approximation].Comment: 7 pages, PS fil
Solvation of electrosprayed ions in the accumulation/collision hexapole of a hybrid Q-FTMS
Effect of the Molecular Weight and the Ionic Strength on the Photoluminescence Quenching of Water Soluble Conjugated Polymer Sodium Poly[2-(3-thienyl)ethyloxy-4- butylsulfonate]
Gas-Phase Reactions of hydrated alkaline earth metal ions, M2+(H2O) n (M = Mg, Ca, Sr, Ba and n = 4–7), with benzene
Observation of a Remarkable Temperature Effect in the Hydrogen Bonding Structure and Dynamics of the CN −
Coupling of Low- and High-Frequency Vibrational Modes: Broadening in the Infrared Spectrum of F –
Multiplexed Orientation and Structure Analysis by Imaging Near-Edge X-ray Absorption Fine Structure (MOSAIX) for Combinatorial Surface Science
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