Pump–probe study of the reconstruction of helium surrounding a tetracene molecule inside a helium droplet
Literature Information
The electronic spectra of single tetracene molecules and tetracene–Ar complexes embedded in large (≃103–104) superfluid helium droplets have been investigated with a pump–probe technique. New sharp (δν≈0.5 cm−1) red-shifted (Δν≈1–2 cm−1) features are obtained in the probe laser spectra indicating a rapid (Δt<20 ns) reconstruction of the He environment upon electronic excitation. These new structures are interpreted with a simple modified bubble-like model. Evidence for a rise in the droplet temperature induced by the pump laser pulse is obtained from a broadening of the phonon wing measured by the probe laser.
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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.














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