Physical; Physics Archivos - Instituto De Física Fundamental

The stochastic wave function method for diffusion of alkali atoms on metallic surfaces

MCastell2023-03-30T23:12:27+02:00Tags: Atomic, Chemistry, Molecular & Chemical. , Physical; Physics|

Authors: Torres-Miyares, E. E.; Ward, D. J.; Rojas-Lorenzo, G.; Rubayo-Soneira, J.; Allison, W.; Miret-Artes, S. Journal: PHYSICAL CHEMISTRY CHEMICAL PHYSICS Publication date: 2023/02/05 DOI: 10.1039/d2cp05511b Abstract: The stochastic wave function method is proposed to study the diffusion regimes of alkali atoms on metallic surfaces. The Lindblad approach, based on the microscopic Hamiltonian information in the [...]

Vibrational, non-adiabatic and isotopic effects in the dynamics of the H-2 + H2?+H3+ + H reaction: application to plasma modelling

MCastell2023-03-30T23:12:25+02:00Tags: Atomic, Chemistry, Molecular & Chemical. , Physical; Physics|

Authors: del Mazo-Sevillano, P.; Felix-Gonzalez, D.; Aguado, A.; Sanz-Sanz, C.; Kwon, D. -H.; Roncero, O. Journal: MOLECULAR PHYSICS Publication date: 2023/03/01 DOI: 10.1080/00268976.2023.2183071 Abstract: The title reaction is studied using a quasi-classical trajectory method for collision energies between 0.1 meV and 10 eV, considering the vibrational excitation of H-2(+) reactant. A new potential energy surface [...]

Seminario IFF #1/2023 – Dr. Tomás González Lezana – “Simulaciones Moleculares en Agregados de Helio”

Seminario IFF #1/2023 – Dr. Tomás González Lezana – “Simulaciones Moleculares en Agregados de Helio”

MCastell2023-02-28T10:50:04+01:00Tags: Atomic, Chemistry, helio, Molecular & Chemical. , Physical; Physics, Simulaciones|

¡Comenzamos con fuerza el ciclo de seminarios del IFF en 2023! En esta ocasión, nuestro compañero Tomás González Lezana, director del Departamento de Procesos Atómicos, Moleculares y en Superficies (PAMS) del IFF, impartirá una charla de título "Simulaciones Moleculares en Agregados de Helio" el próximo lunes 27 de febrero en la Sala de Conferencias de [...]

Vibrational effects in the quantum dynamics of the H + D-2(+) charge transfer reaction

MCastell2023-02-21T13:37:29+01:00Tags: Atomic, Chemistry, Molecular & Chemical. , Physical; Physics|

Authors: Roncero, O.; Andrianarijaona, V; Aguado, A.; Sanz-Sanz, C. Journal: MOLECULAR PHYSICS Publication date: 2022/01/17 DOI: 10.1080/00268976.2021.1948125 Abstract: The H + D-2(+)(v = 0,1 and 2) charge transfer reaction is studied using an accurate wave packet method, using recently proposed coupled diabatic potential energy surfaces. The state-to-state cross section is obtained for three different channels: [...]

Imaging the elusive C-C bond dissociation channel of photoexcited ethyl radical

MCastell2023-02-21T13:37:28+01:00Tags: Atomic, Chemistry, Molecular & Chemical. , Physical; Physics|

Authors: Marggi Poullain, Sonia; Rubio-Lago, Luis; Chicharro, David V.; Boullagui, Aymen; Zanchet, Alexandre; Yazidi, Ounaies; Garcia-Vela, Alberto; Banares, Luis Journal: MOLECULAR PHYSICS Publication date: 2022/01/17 DOI: 10.1080/00268976.2021.1984598 Abstract: The C-C bond dissociation channel of the ethyl (CH3-CH2) radical is investigated at 197.4, 199.98 and 201 nm by velocity map imaging and resonance enhanced multiphoton ionisation [...]

Assessment of DFT approaches in noble gas clathrate-like clusters: stability and thermodynamics

MCastell2023-02-21T13:37:27+01:00Tags: Atomic, Chemistry, Molecular & Chemical. , Physical; Physics|

Authors: Yanes-Rodriguez, Raquel; Prosmiti, Rita Journal: PHYSICAL CHEMISTRY CHEMICAL PHYSICS Publication date: 2022/01/19 DOI: 10.1039/d1cp04935f Abstract: We have assessed the performance and accuracy of different wavefunction-based electronic structure methods, such as DFMP2 and domain-based local pair-natural orbital (DLPNO-CCSD(T)), as well as a variety of density functional theory (DFT) approaches on He@(H2O)(N) cage systems. We have [...]

Helium structures around SF5+ and SF6+: novel intermolecular potential and mass spectrometry experiments

MCastell2023-02-21T13:37:20+01:00Tags: Atomic, Chemistry, Molecular & Chemical. , Physical; Physics|

Authors: Zunzunegui-Bru, Eva; Gruber, Elisabeth; Bergmeister, Stefan; Meyer, Miriam; Zappa, Fabio; Bartolomei, Massimiliano; Pirani, Fernando; Villarreal, Pablo; Gonzalez-Lezana, Tomas; Scheier, Paul Journal: PHYSICAL CHEMISTRY CHEMICAL PHYSICS Publication date: 2022/01/26 DOI: 10.1039/d1cp04725f Abstract: Helium clusters around the recently experimentally observed sulphur hexafluoride SF6+ and sulphur pentafluoride SF5+ ions are investigated using a combined experimental and theoretical [...]

Methanol Negative Ion Fragmentation Probed in Electron Transfer Experiments

MCastell2023-02-21T13:37:13+01:00Tags: Atomic, Chemistry, Molecular & Chemical. , Physical; Physics|

Authors: Isabel Lozano, Ana; Kumar, Sarvesh; Kerkeni, Boutheina; Garcia, Gustavo; Limao-Vieira, Paulo Journal: JOURNAL OF PHYSICAL CHEMISTRY A Publication date: 2022/02/24 DOI: 10.1021/acs.jpca.1c07588 Abstract: In this contribution, we report a novel comprehensive investigation on negative ion formation from electron transfer processes mediated by neutral potassium atom collisions with neutral methanol molecules employing experimental and theoretical [...]

Capturing quantum effects with quasi-classical trajectories in the D + H-3(+) -> H2D+ + H reaction

MCastell2023-02-21T13:37:10+01:00Tags: Atomic, Chemistry, Molecular & Chemical. , Physical; Physics|

Authors: Braunstein, Matthew; Bonnet, Laurent; Roncero, Octavio Journal: PHYSICAL CHEMISTRY CHEMICAL PHYSICS Publication date: 2022/03/02 DOI: 10.1039/d1cp04244k Abstract: We present quasi-classical trajectory (QCT) cross sections, rate constants, and product state distributions for the D + H-3(+) -> H2D+ + H reaction. Using the same H-4(+) potential surface, the rate constants obtained from several QCT-based methods [...]

Unraveling the Origin of Symmetry Breaking in H2O@C-60 Endofullerene Through Quantum Computations

MCastell2023-02-21T13:37:05+01:00Tags: Atomic, Chemistry, Molecular & Chemical. , Physical; Physics|

Authors: Carrillo-Bohorquez, Orlando; Valdes, Alvaro; Prosmiti, Rita Journal: CHEMPHYSCHEM Publication date: 2022/03/14 DOI: 10.1002/cphc.202200034 Abstract: We explore the origin of the anomalous splitting of the 1(01) levels reported experimentally for the H2O@C-60 endofullerene, in order to give some insight about the physical interpretations of the symmetry breaking observed. We performed fully-coupled quantum computations within the [...]