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Related papers: Photodissociation dynamics of N$_{3}^{+}$

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Joint electron-ion energy spectra for the dissociative ionization of a model H$_2^+$ in few-cycle, infrared laser pulses are calculated via the numerical ab initio solution of the time-dependent Schr\"odinger equation. A strong,…

Atomic Physics · Physics 2017-11-21 V. Mosert , D. Bauer

Single-, two-, and three-photon transitions were driven amongst five quantum states of a niobium persistent-current qubit. A multi-level energy-band diagram was extracted using microwave spectroscopy, and avoided crossings were directly…

Superconductivity · Physics 2007-05-23 Y. Yu , W. D. Oliver , J. C. Lee , K. K. Berggren , L. S. Levitov , T. P. Orlando

Motivated by the huge need of data for non-equilibrium plasma modeling, a theoretical investigation of dissociative electron attachment to the NO molecule is performed. The calculations presented here are based on the…

Atomic Physics · Physics 2020-12-02 V. Laporta , I. F. Schneider , J. Tennyson

Molecular dimers are widely utilized as a tool to investigate the structure-property relationships behind the complex photophysical processes of condensed-phase systems, where structural tuning remains a challenge. This approach often…

We present a dynamical simulation scheme to model the highly correlated excited state dynamics of linear polyenes. We apply it to investigate the internal conversion processes of carotenoids following their photoexcitation. We use the…

Chemical Physics · Physics 2023-07-19 Dilhan Manawadu , Darren J. Valentine , William Barford

We predict feasibility of the photoassociative formation of Sr_2 molecules in arbitrary vibrational levels of the electronic ground state based on state-of-the-art ab initio calculations. Key is the strong spin-orbit interaction between the…

Atomic Physics · Physics 2012-04-19 Wojciech Skomorowski , Robert Moszynski , Christiane P. Koch

In order to study electron-transfer mediated chemical processes on a metal surface, one requires not one but two potential energy surfaces (one ground state and one excited state) as in Marcus theory. In this letter, we report that a novel,…

Chemical Physics · Physics 2023-03-22 Junhan Chen , Joseph Subotnik

We generalize the theoretical modeling of collective atomic super- and subradiance to the multilevel case including spontaneous emission from several excited states towards a common ground state. We show that in a closely packed ensemble of…

Quantum Physics · Physics 2019-05-07 Raphael Holzinger , Laurin Ostermann , Helmut Ritsch

Electric dipole ($E1$) response of $^{6}$He is studied with a fully microscopic six-body calculation. The wave functions for the ground and excited states are expressed as a superposition of explicitly correlated Gaussians (CG). Final state…

Nuclear Theory · Physics 2015-06-19 D. Mikami , W. Horiuchi , Y. Suzuki

Double excitations in organic molecules have garnered significant interest as a result of their importance in singlet fission and photophysics. These excitations play a crucial role in understanding the photoexcitation processes in…

Chemical Physics · Physics 2025-09-03 Namana Venkatareddy , Victor Ghosh , H. R. Krishnamurthy , Manish Jain

N$_2$ molecules traveling in pulsed supersonic beams have been excited from their ${\mathrm{X\,^1\Sigma_{\mathrm{g}}^+}}$ ground electronic state to long-lived Rydberg states with principal quantum numbers between 39 and 48 using a…

Atomic Physics · Physics 2024-03-20 M. H. Rayment , S. D. Hogan

Variational calculations of excited electronic states are carried out by finding saddle points on the surface that describes how the energy of the system varies as a function of the electronic degrees of freedom. This approach has several…

Chemical Physics · Physics 2023-02-15 Yorick L. A. Schmerwitz , Gianluca Levi , Hannes Jónsson

We present the simulation of the photochemical dynamics of cyclobutanone induced by the excitation of the 3s Rydberg state. For this purpose, we apply the complete active space self-consistent field method together with spin-orbit…

Chemical Physics · Physics 2024-01-15 Xincheng Miao , Kira Diemer , Roland Mitrić

Photo-excited charge dynamics of interacting charge-frustrated systems are studied using a spinless fermion model on an anisotropic triangular lattice. Real-time evolution of the system after irradiating a pump-photon pulse is analyzed by…

Strongly Correlated Electrons · Physics 2014-11-25 Hiroshi Hashimoto , Hiroaki Matsueda , Hitoshi Seo , Sumio Ishihara

We present a study of dissociative electron attachment and vibrational excitation processes in electron collisions with the CF$_3$Cl molecule. The calculations are based on the two-dimensional nuclear dynamics including the C-Cl symmetric…

Chemical Physics · Physics 2011-12-09 Michal Tarana , Karel Houfek , Jiří Horáček , Ilya I. Fabrikant

Dynamical properties of photoexcited states are theoretically studied in a one-dimensional Mott insulator dimerized by the spin-Peierls instability. Numerical calculations combined with a perturbative analysis have revealed that the lowest…

Strongly Correlated Electrons · Physics 2009-11-11 Nobuya Maeshima , Kenji Yonemitsu

We calculate the potential energy curves, the permanent dipole moment curves, and the lifetimes of the ground and excited vibrational states of the heteronuclear alkali dimers XY (X, Y = Li, Na, K, Rb, Cs) in the X1{\Sigma}+ electronic…

Chemical Physics · Physics 2016-10-05 Dmitry A. Fedorov , Andrei Derevianko , Sergey A. Varganov

The problem of the transition of electron shells of atoms to excited states in the process of neutrinoless double-$\beta$ decay is investigated. This subject is crucial for modeling the energy spectrum of $\beta$-electrons, which is…

High Energy Physics - Phenomenology · Physics 2023-11-13 M. I. Krivoruchenko , K. S. Tyrin , F. F. Karpeshin

We report on high resolution Fourier-transform spectroscopy of fluorescence to the a^3\Sigma_u^+ state excited by two-photon or two-step excitation from the X^1\Sigma_g^+ state to the 2^3\Pi_g state in the molecule K_2. These spectroscopic…

Atomic Physics · Physics 2009-11-13 A. Pashov , P. Popov , H. Knöckel , E. Tiemann

The lifetime of image states, which represent a key quantity to probe the coupling of surface electronic states with the solid substrate, have been recently determined for quantum numbers $n\le 6$ on Cu(100) by using time-resolved…

Materials Science · Physics 2009-10-31 E. V. Chulkov , I. Sarria , V. M. Silkin , J. M. Pitarke , P. M. Echenique