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We study the dissociation of H$_2$$^+$ in uv laser pulses by solving the non-Born-Oppenheimer time-dependent Schr\"{o}dinger equation as a function of the photon energy $\omega$ of the pulse. Significant enhancements of the dissociation…

原子与分子团簇 · 物理学 2014-07-22 Kunlong Liu , Qianguang Li , Pengfei Lan , Peixiang Lu

The interplay of kinetic electron physics and atomic processes in ultrashort laser-plasma interactions provides a comprehensive understanding of electron energy distribution's impact on plasma properties. Notably, non-equilibrium electrons…

等离子体物理 · 物理学 2024-03-27 M. S. Cho , H. -K. Chung , M. E. Foord , S. B. Libby , B. I. Cho

Nonadiabatic effects that arise from the concerted motion of electrons and atoms at comparable energy and time scales are omnipresent in thermal and light-driven chemistry at metal surfaces. Excited (hot) electrons can measurably affect…

材料科学 · 物理学 2020-12-10 Connor L. Box , Yaolong Zhang , Rongrong Yin , Bin Jiang , Reinhard J. Maurer

There have been discussions in the recent literature regarding the accuracy of the available electron impact excitation rates (equivalently effective collision strengths $\Upsilon$) for transitions in Be-like ions. In the present paper we…

原子物理 · 物理学 2016-09-07 K. M. Aggarwal , F. P. Keenan , K. D. Lawson

We formulate the theory for a diatomic molecule in a spatially degenerate electronic state interacting with a non-resonant laser field and investigate its rovibrational structure in the presence of the field. We report on \textit{ab initio}…

The optical emission spectrum of acetylene excited by monoenergetic electrons was studied in the range of 190 nm to 660 nm. The dissociative excitation and dissociative ionization associated with excitation of the ions initiated by electron…

原子物理 · 物理学 2022-12-12 Juraj Országh , Marián Danko , Peter Čechvala , Štefan Matejčík

In bulk systems, molecules are routinely identified by their vibrational spectrum using Raman or infrared spectroscopy. In recent years, vibrational excitation lines have been observed in low-temperature conductance measurements on single…

介观与纳米尺度物理 · 物理学 2010-02-25 Johannes S. Seldenthuis , Herre S. J. van der Zant , Mark A. Ratner , Joseph M. Thijssen

We used the multichannel quantum defect theory to compute cross sections and rate coefficients for the dissociative recombination of CH$^+$ initially in its lowest vibrational level $v_i^+ = 0$ with electrons of incident energy bellow $0.2$…

天体物理仪器与方法 · 物理学 2022-03-08 J. Zs. Mezei , M. D. Epée Epée , O. Motapon , I. F. Schneider

The influence of an electron-vibrational coupling on the laser control of electron transport through a molecular wire that is attached to several electronic leads is investigated. These molecular vibrational modes induce an effective…

介观与纳米尺度物理 · 物理学 2007-05-23 Jörg Lehmann , Sigmund Kohler , Volkhard May , Peter Hänggi

Previously we proposed a new approach of exciting the $^{229}$Th nucleus using laser-driven electron recollision [W. Wang et al., Phys. Rev. Lett. 127, 052501 (2021)]. The current article is aimed to elaborate the method by explaining…

原子物理 · 物理学 2022-08-15 Xu Wang

The rate, selectivity and efficiency of plasma-based conversion processes is strongly affected by nonequilibrium phenomena. High concentrations of vibrationally excited molecules are such a plasma-induced effect. It is frequently assumed…

化学物理 · 物理学 2021-09-27 Kristof M. Bal , Erik C. Neyts

We investigate theoretically a nuclear excitation mechanism involving absorption of non-resonant photons leveraged by the coupling to the atomic shell. The nuclear non-resonant photoexcitation is assisted by electron recombination which…

核理论 · 物理学 2026-04-28 Nan Xue , Zuoye Liu , Ziwen Li , Adriana Pálffy , Jianmin Yuan , Yuanbin Wu , Xiangjin Kong , Yu-Gang Ma

Accurate low and high-lying bound states of Tietz-Hua oscillator potential are presented. The radial Schr\"odinger equation is solved efficiently by means of the generalized pseudospectral method that enables optimal spatial discretization.…

化学物理 · 物理学 2014-09-10 Amlan K. Roy

This work explores the effect of O2 addition on CO2 dissociation and on the vibrational kinetics of CO2 and CO under various non-equilibrium plasma conditions. A self-consistent model, previously validated for pure CO2 discharges, is…

等离子体物理 · 物理学 2023-11-14 C. Fromentin , T. Silva , T. C. Dias , A. S. Morillo-Candas , O. Biondo , O. Guaitella , V. Guerra

A coherent control scheme for the population distribution in the vibrational states of nonpolar molecules is proposed. Our theoretical analysis and results of numerical simulations for the interaction of the hydrogen molecular ion in its…

量子物理 · 物理学 2011-02-17 A. Picón , J. Biegert , A. Jaron-Becker , A. Becker

Analytical formulas for the excitation energies as well as for the electric quadrupole reduced transition probabilities in the ground, beta and gamma bands were derived within the coherent state model for the near vibrational and well…

核理论 · 物理学 2015-05-30 A. A. Raduta , R. Budaca , Amand Faessler

Vibrational-electronic (vibronic) resonance and its role in energy and charge transfer has been experimentally and theoretically investigated in several photosynthetic proteins. Using a dimer modeled on a typical photosynthetic protein, we…

化学物理 · 物理学 2020-09-03 Amitav Sahu , Jo Sony Kurian , Vivek Tiwari

Accurate photodissociation cross sections have been obtained for the A-X electronic transition of HeH+ using ab initio potential curves and dipole transition moments. Partial cross sections have been evaluated for all rotational transitions…

星系天体物理 · 物理学 2015-05-28 S. Miyake , C. D. Gay , P. C. Stancil

Utilising previous work by the authors on the spin-coupled rotational cross-sections for electron-CN collisions, data for the associated rate coefficients is presented. Data on rotational, fine-structure and hyperfine-structure transition…

化学物理 · 物理学 2015-06-16 Stephen Harrison , Alexandre Faure , Jonathan Tennyson

Arbitrary waves incident on a solid embedded nanoparticle are studied. The acoustic vibrational frequencies are shown to correspond to the poles of the scattering cross section in the complex frequency plane. The location of the poles is…

材料科学 · 物理学 2007-05-23 L. Saviot , D. B. Murray