Spectroscopy and dynamics in helium nanodroplets

Abstract

This article provides a review of recent work in the field of helium nanodroplet spectroscopy with emphasis on the dynamical aspects of the interactions between molecules in helium as well as their interaction with this unique quantum solvent. Emphasis is placed on experimental methods and studies introducing recent new approaches, in particular including time-resolved techniques. Corresponding theoretical results on the energetics and dynamics of helium droplets are also discussed.

50 pages including 11 figures

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• Structural and dynamical properties of superfluid helium: a density functional approach
• Density of Superfluid Helium Droplets
• Atomic and Molecular Impurities in ${}^4$He Clusters
• Potential of a neutral impurity in a large ${}^4$He clusters
• A superfluid hydrodynamic model for the enhanced moments of inertia of molecules in liquid 4He
• Structure, rotational dynamics, and superfluidity of small OCS-doped He clusters
• Intense pulsed helium droplet beams
• Free Radicals in Superfluid Liquid Helium Nanodroplets: A Pyrolysis Source for the Production of Propargyl Radical
• Helium nanodroplets and trapped Bose-Einstein condensates as prototypes of finite quantum fluids
• Computational spectroscopy of helium-solvated molecules: effective inertia, from small He clusters toward the nano-droplet regime
• Roton-Rotation Coupling of Acetylene in ${}^4$He
• Single and Double Resonance Microwave Spectroscopy in Superfluid ${}^4$He Clusters
• Entrance Channel X-HF (X=Cl, Br, and I) Complexes studied by High-Resolution Infrared Laser Spectroscopy in Helium Nanodroplets
• Pinning of quantized vortices in helium drop by dopant atoms and molecules
• Quantum Rotation of HCN and DCN in Helium-4
• OCS in small para-hydrogen clusters: energetics and structure with N=1-8 complexed hydrogen molecules
• Rotational dynamics of CO solvated in small He clusters: a quantum Monte Carlo study
• Predicting atomic dopant solvation in helium clusters: the MgHe${}_n$ case
• Rotation in liquid ${}^4$He: Lessons from a toy model
• Surface location of sodium atoms attached to He-3 nanodroplets
• UV spectra of benzene isotopomers and dimers in helium nanodroplets
• Evaporative Cooling of Helium Nanodroplets with Angular Momentum Conservation
• Energetics and Possible Formation and Decay Mechanisms of Vortices in Helium Nanodroplets
• Probing vortices in 4He nanodroplets
• Measurement of phi_3 with Dalitz Plot Analysis of B->D(*)K Decay
• Quantum Hydrodynamic Model for the enhanced moments of Inertia of molecules in Helium Nanodroplets: Application to SF${}_6$
• Discovery of dumbbell-shaped Cs*He_n exciplexes in solid He 4
• Structure and energetics of helium adsorption on nanosurfaces
• Microscopic two-fluid theory of rotational constants of the OCS-H${}_2$ complex in ${}^4$He droplets
• Microcanonical Thermodynamic Properties of Helium Nanodroplets
• Bias in the temperature of helium nanodroplets measured by an embedded rotor

Cited by in corpus (85)

• Quantum control of molecular rotation
• Formation and interactions of cold and ultracold molecules: new challenges for interdisciplinary physics
• Cold Physics and Chemistry: Collisions, Ionization and Reactions inside Helium Nanodroplets Close to Zero K
• Quantum droplets of dipolar mixtures
• Photoionizaton of Pure and Doped Helium Nanodroplets
• Collective excitations of self-bound droplets of a dipolar quantum fluid
• Density Functional Theory of doped superfluid liquid helium and nanodroplets
• Impulsive Laser Induced Alignment of Molecules Dissolved in Helium Nanodroplets
• Quantum droplet states of a binary magnetic gas
• Highly charged droplets of superfluid helium
• Catching proteins in liquid helium droplets
• Surface Deposition and Imaging of Large Ag Clusters Formed in He Droplets
• Quasiparticle approach to molecules interacting with quantum solvents
• Microscopic molecular superfluid response: theory and simulations
• Coherent multidimensional spectroscopy of dilute gas-phase nanosystems
• Penning ionization of doped helium nanodroplets following EUV excitation
• The structure and energetics of ${}^3$He and ${}^4$He nanodroplets doped with alkaline earth atoms
• Laser-driven nanoplasmas in doped helium droplets: Local ignition and anisotropic expansion
• EUV ionization of pure He nanodroplets: Mass-correlated photoelectron imaging, Penning ionization and electron energy-loss spectra
• Desorption of alkali atoms from 4He nanodroplets
• Imaging spectroscopy of rubidium atoms attached to helium nanodroplets
• Emergence of non-abelian magnetic monopoles in a quantum impurity problem
• Enhanced ionization of embedded clusters by Electron Transfer Mediated Decay in helium nanodroplets
• Thermal instability, evaporation and thermodynamics of one-dimensional liquids in weakly-interacting Bose-Bose mixtures
• Quantum interference spectroscopy of RbHe exciplexes formed on helium nanodroplets
• Dopant induced ignition of helium nanodroplets in intense few-cycle laser pulses
• Spectroscopy of free radicals and radical containing entrance-channel complexes in superfluid helium nano-droplets
• Energy absorption of xenon clusters in helium nanodroplets under strong laser pulses
• Minimum sizes for the submersion of alkali clusters into liquid helium
• Slow beams of massive molecules
• Vibrational relaxation and dephasing of Rb2 attached to helium nanodroplets
• Interatomic Coulombic decay in helium nanodroplets
• Phase-modulated electronic wave-packet interferometry reveals high resolution vibronic spectra of free Rb atoms and Rb*He molecules
• High-resolution spectroscopy of triplet states of Rb2 by femtosecond pump-probe photoionization of doped helium nanodroplets
• Absorption spectrum of Ca atoms attached to ${}^4$He nanodroplets
• Ultrafast relaxation of photoexcited superfluid He nanodroplets
• Rotational coherence spectroscopy of molecules in helium nanodroplets: Reconciling the time and the frequency domains
• Time-resolved studies on the collapse of magnesium atom foam in helium nanodroplets
• Wave packet dynamics in triplet states of Na2 attached to helium nanodroplets
• High activity of He droplets following ionization of systems inside those droplets
• Lithium ions solvated in helium
• Wave packet dynamics of potassium dimers attached to helium nanodroplets
• Desorption Dynamics of Heavy Alkali Metal Atoms (Rb, Cs) off the Surface of Helium Nanodroplets
• Photofragmentation beam splitters for matter-wave interferometry
• Evolution of dopant-induced helium nanoplasmas
• Coherent multidimensional spectroscopy in the gas phase
• Mg impurity in helium droplets
• Microsolvation of cationic dimers in ${}^4$He droplets: geometries of A${}_2^{+}$(He)${}_N$ (A=Li,Na,K) from optimized energies
• Spectroscopy of corannulene cations in helium nanodroplets
• Penning ionization of acene molecules by He nanodroplets
• Quantum Nature of the Hydrogen Bond from Ambient Conditions down to Ultra-low Temperatures
• Long-lived nuclear coherences inside helium nanodroplets
• Efficiency of Dopant-Induced Ignition of Helium Nanoplasmas
• Homo- and heteronuclear alkali metal trimers formed on helium nanodroplets. II. Femtosecond spectroscopy and spectra assignments
• Fingerprints of angulon instabilities in the spectra of matrix-isolated molecules
• Formation and relaxation of RbHe exciplexes on He nanodroplets studied by femtosecond pump and picosecond probe spectroscopy
• Revealing laser-coherent electron features using phase-of-the-phase spectroscopy
• Theory of the Rotating Polaron: Spectrum and Self-Localization
• Unravelling the Full Relaxation Dynamics of Superexcited Helium Nanodroplets
• Penning Spectroscopy and Structure of Acetylene Oligomers in He Nanodroplets
• Anomalous screening of quantum impurities by a neutral environment
• Direct observation of interatomic Coulombic decay and subsequent ion-atom scattering in helium nanodroplets
• Oriented polar molecules trapped in cold helium nanodroplets: Electrostatic deflection, size separation, and charge migration
• High-resolution two-dimensional electronic spectroscopy reveals homogeneous line profiles in isolated nanoparticles
• Effects of the mean free path and relaxation in a model for the aggregation of particles in superfluid media
• Inelastic scattering of photoelectrons from He nanodroplets
• Predissociation dynamics of lithium iodide
• Electrostatic deflection of a molecular beam of massive neutral particles: Fully field-oriented polar molecules within superfluid nanodroplets
• Ca impurity in small mixed ${}^4$He-${}^3$He clusters
• Charging dynamics of dopants in helium nanoplasmas
• Kilohertz laser ablation for doping helium nanodroplets
• Quantum dynamics of Rb atoms desorbing off the surface of He nanodroplets
• Desorption Dynamics of Rb_2 Molecules off the Surface of Helium Nanodroplets
• Density of states of helium droplets
• Detailed study of dissipative quantum dynamics of K-2 attached to helium nanodroplets
• Purcell-induced suppression of superradiance for molecular overlayers on noble atom surfaces
• Variational theory of angulons and their rotational spectroscopy
• Probing the presence and absence of metal-fullerene electron transfer reactions in helium nanodroplets by deflection measurements
• Structural properties of bosonic He clusters with N=2-10 for different potential models at the physical point and at unitarity
• Effect of a magnetic field on molecule-solvent angular momentum transfer
• Efficient atomization of cesium metal in solid helium by low energy (10 $\mu$J) femtosecond pulses
• Photoelectron spectroscopy of coronene molecules embedded in helium nanodroplets
• Ultraslow optical centrifuge with arbitrarily low rotational acceleration
• Attractive and repulsive angulons in superfluid environments
• Dynamics of photo-excited Cs atoms attached to helium nanodroplets