Photodissociation dynamics of H2O at 121.6 nm have been studied using the H atom Rydberg “tagging” time-of-flight technique and by quasiclassical trajectory (QCT) calculations. Product kinetic energy distributions angular measured. From these distributions, rovibronic OH radical product as well state resolved anisotropy parameters were determined. The dissociation D00(H–OH) is determined to be 41151±5 cm−1. Two clear alternations in OH(X,v=0) rotational distribution observed, with each...

Abstract Two-dimensional (2D) van der Waals heterostructures (vdWHs) incorporating ferroelectric properties and Rashba effects hold attractive applications in spintronics. In this work, the 2D α-tellurene typical piezoelectric α-In 2 Se 3 are selected to form bilayer α-tellurene/α-In (Te/In ) vdWHs novel electronic, optical spin characteristics explored by means of first-principles calculations. We show that, firstly, Te/In vdWH exhibits semiconductor nature as well super strong absorption...

Liquid-crystalline materials are reported that exhibit circularly polarised, thermally activated delayed fluorescence with good solution and device emission efficiency, high luminescence asymmetry.

Photodissociation of H2O at 157 nm has been studied using the H atom Rydberg tagging time-of-flight technique. Vibrational state distribution measured for OH product from photodissociation. Comparisons with previous theoretical calculations and experimental results by laser-induced fluorescence (LIF) measurements have made. The in this work indicate that relative populations high vibrationally excited OH(v≧2) products LIF technique are significantly underestimated, suggesting as a to...

The photodissociation dynamics of D2O at 121.6 nm have been studied using the D atom Rydberg “tagging” time-of-flight technique. Product kinetic energy distributions and angular measured. From these distributions, rovibronic OD radical product rotational state-resolved anisotropy parameters determined. dissociation D00 (D–OD) is determined to be 41912±20 cm−1. Alternations population in (X, v=0) distribution, similar those H2O [S. A. Harich et al., J. Chem. Phys. 113, 10 073 (2000)] also...

Photodissociation of HOD from the B state has been studied using Rydberg "tagging" time-of-flight technique. Experimental results indicate that extreme rotational excitation in OH(X,v = 0) product ( N up to 50 or so) is produced through conical intersection dissociation pathway such some OH states lie above O((3)P)+H limit, which are supported only large centrifugal barriers. The population distribution for also shows an alternation with N, similar observed H(2)O attributed dynamical...

Laser-induced fluorescence (LIF) spectra have been recorded of OH radicals produced when H atoms and NO2 react in thermal energy collisions the region where two uncollimated beams containing reagents intersect. Spectra (0,0) (1,1), (0,1) (1,2), (0,2) (1,3) bands A 2Σ+−X 2Π system observed. Distributions over whole energetically accessible range rovibrational levels determined using surprisal analysis to deduce complete rotational distributions from observed high (N≥10). Both vibration...

Atomic hydrogen plays an important role in the chemical vapour deposition of functional materials, plasma etching and new approaches to synthesis hydrogen-containing compounds. This work reports experimental determinations atomic microwave discharge plasmas formed from TM01 mode ASTeX-type reactor, via optical emission spectroscopy using Ar as actinometer. The relative intensities H atom Balmer lines Ar-750.4 nm emissions functions input power gas pressure have been investigated. At density...

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotodissociation of methyl nitrate in a molecular beamXuefeng Yang, Peter Felder, and J. Robert HuberCite this: Phys. Chem. 1993, 97, 42, 10903–10910Publication Date (Print):October 1, 1993Publication History Published online1 May 2002Published inissue 1 October 1993https://pubs.acs.org/doi/10.1021/j100144a002https://doi.org/10.1021/j100144a002research-articleACS PublicationsRequest reuse permissionsArticle Views154Altmetric-Citations17LEARN ABOUT...

The binding energy spectra (BES) of valence shells CH2BrCl and CF2BrCl have been measured at a series different azimuthal angles by an (e, 2e) electron momentum spectrometer employing noncoplanar symmetric geometry impact 1200 eV plus energy. experimental profiles (XMPs) are extracted from the sequential BES compared with theoretical ones calculated using Hartree−Fock (HF) density functional theory (DFT-B3LYP) calculations 6-311G, 6-311++G**, aug-cc-pVTZ basis sets. In general, DFT-B3LYP...

Abstract The double tearing mode (DTM) instability with two q s = 1 rational surfaces is investigated by taking into account the collisionless effects, including electron inertia and viscosity in a cylindrical geometry. calculations show that for -profile small distance between surfaces, Δ r , there exists broad linear spectrum of DTMs. effects not only can significantly increase growth rate DTMs but also enlarge width unstable modes. For fixed magnetic shears at high-order harmonics smaller...

Abstract The primary and secondary dissociation processes of CF 2 Br BrI have been studied by photofragment translational spectroscopy in a pulsed molecular beam. photolysis at 193 nm produces mainly the fragment pair + and, competing process, . radicals are formed with sufficient internal energy to overcome barrier unimolecular Br. photodissociation 248 also proceeds along two decay pathways involving fission weak C‐I bond stronger C‐Br bond, respectively. former reaction spin‐orbit excited...

The complete product vibrational energy distribution from F+H2, CH4, C2H6 reactions was determined by the chemical laser grating selection (CLG) technique. Three important factors—vibrational relaxation and secondary reaction, rotational nonequilibrium, superradiance were carefully investigated time-resolved spectroscopy analyzed computer modeling. It found that using lower reactant pressure, these disadvantageous effects, which may have influenced results of previous studies, could be...

Strong mass signals of H−2 and D−2 ions have been observed from low-pressure dielectric barrier discharge hydrogen deuterium plasmas via molecular beam spectrometry. The H−2/H− D−2/D− ratios (∼0.35–0.4) are over five orders magnitude higher than those by other techniques. kinetic energy sampled the was determined to be widely distributed, a few eV >100 eV, giving lifetimes greater ∼40 µs for ∼55 D−2. highest vib-rotational excitation neutral H2 species in plasma about J = 0, v 5 or 19, 0...

Through photolysis of NF3/HI/M=1.5/0.5/38 Torr mixtures (M=N2,CO,Ar) in a grating cavity, HF rotational laser emission is produced for (v=0, J=21→20), (1,23→22), (2,24→23), and (3,18→17). Known attenuators are placed the cavity used to estimate absolute population inversions responsible gains. The results confirm role selective V→R resonant pumping these high J lasers. Further, they provide rough estimates Δv=2, Δ J=10, Δv=3, J=20 near-resonant rate constants relaxation by N2 from v=4, J=14,...