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Using archival, high-resolution far-ultraviolet HST/STIS spectra of 34 Galactic O and B stars, we measure CI column densities and compare them with measurements from the literature of CO and H_2 with regard to understanding the presence of…

Astrophysics of Galaxies · Physics 2014-11-20 Eric B. Burgh , Kevin France , Edward B. Jenkins

The mechanisms for photodissociation of methyl halides (CH$_3$X, X= Cl, Br, I) have been studied for these molecules when adsorbed on thin films of C$_6$H$_6$ or C$_6$F$_6$ on copper single crystals, using time-of-flight spectroscopy with…

Chemical Physics · Physics 2021-01-29 E. T. Jensen

Nowadays there are several observational studies about the 13CO/C18O abundance ratio (X) towards nearby molecular clouds. These works give observational support to the C18O selective photodissociation due to the interaction between the FUV…

Astrophysics of Galaxies · Physics 2020-01-08 M. B. Areal , S. Paron , M. E. Ortega , L. Duvidovich

We consider an ensemble of diatomic molecules resonantly coupled to an optical cavity under strong coupling conditions at normal incidence. Photodissociation dynamics is examined via direct numerical integration of the coupled…

Chemical Physics · Physics 2023-03-08 Maxim Sukharev , Joseph Subotnik , Abraham Nitzan

A previous study of diatomic molecules revealed that variational second-order density matrix theory has serious problems in the dissociation limit when the N-representability is imposed at the level of the usual two-index (P, Q, G) or even…

Chemical Physics · Physics 2010-03-19 Brecht Verstichel , Helen van Aggelen , Dimitri Van Neck , Paul W. Ayers , Patrick Bultinck

Hybrid Monte Carlo and molecular dynamics simulations were used to investigate the interaction of light interstitials in multi-element Ni-based alloys. We show that light interstitials such as boron and oxygen fundamentally alter…

Materials Science · Physics 2025-09-24 Tyler D. Doležal , Rodrigo Freitas , Ju Li

We report on our studies of the neutron-skin effects in high-$p_{\mathrm{T}}$ observables at the LHC. We study the impact of the neutron-skin effect on the centrality dependence of inclusive direct photon, high-$p_{\mathrm{T}}$ hadron and…

High Energy Physics - Phenomenology · Physics 2016-06-30 Ilkka Helenius , Hannu Paukkunen , Kari J. Eskola

In this work we investigate the effects of the environment on the X-ray photoelectron spectra of hydrogen chloride and the chloride ions adsorbed on ice surfaces, as well as of chloride ions in water droplets. In our approach, we combine a…

Chemical Physics · Physics 2023-09-18 Richard A. Opoku , Céline Toubin , André Severo Pereira Gomes

We study the chemical evolution of interstellar grain mantle by varying the physical parameters of the interstellar medium (ISM). To mimic the exact interstellar condition, gas grain interactions via accretion from the gas phase and…

Solar and Stellar Astrophysics · Physics 2011-09-14 Ankan Das , Sandip K. Chakrabarti

Strong field ionization provides a unique mean to address complex dynamics of an electron in competing Coulomb and laser fields. Recent streak camera experiment (K\"ubel, et al., Phys. Rev. Lett. 119, 183201) analyzed asymmetries in the…

We investigate the influence of X-ray and gamma-ray irradiation on the photophysical properties of sub-monolayer CdTe/CdS quantum dots (QDs) immobilized in porous silica (PSiO2) scaffolds. The highly luminescent QD-PSiO2 thin films allow…

Mesoscale and Nanoscale Physics · Physics 2015-08-25 Girija Gaur , Dmitry S. Koktysh , Daniel M. Fleetwood , Robert A. Weller , Robert A. Reed , Bridget R. Rogers , Sharon M. Weiss

Our work is concerned with the case of the solar molecule CN which presents conspicuous profiles of scattering polarization. We start by calculating accurate PES for the singlet and triplet electronic ground states in order to characterize…

Solar and Stellar Astrophysics · Physics 2025-02-05 S. Qutub , M. Derouich , Y. N. Kalugina , H. Assiri , F. Lique

Photonic hyperentanglement enables increased information capacity and enhanced functionality for quantum communication and networking. However, synchronization of hyperentangled photon pairs requires maintaining correlations simultaneously…

Quantum Physics · Physics 2026-05-26 Yu Guo , Arya Chowdhury , Pranay Tiwari , Jia Boon Chin , Anindya Banerji , Alexander Ling

We present an unbiased large-scale (9 deg$^2$) CN ($N$=1-0) and C$^{18}$O ($J$=1-0) survey of Cygnus-X conducted with the Nobeyama 45m Cygnus-X CO survey. CN and C$^{18}$O are detected in various objects towards the Cygnus-X North and South…

Astrophysics of Galaxies · Physics 2018-03-21 M. Yamagishi , A. Nishimura , S. Fujita , T. Takekoshi , M. Matsuo , T. Minamidani , K. Taniguchi , K. Tokuda , Y. Shimajiri

Photodissociation regions (PDRs) contain a large fraction of all of the interstellar matter in galaxies. Classical examples include the boundaries between ionized regions and molecular clouds in regions of massive star formation, marking…

Astrophysics of Galaxies · Physics 2015-07-01 D. J. Stock , M. G. Wolfire , E. Peeters , A. G. G. M. Tielens , B. Vandenbussche , C. Boersma , J. Cami

In bright photodissociation regions (PDRs) associated to massive star formation, the presence of dense "clumps" that are immersed in a less dense interclump medium is often proposed to explain the difficulty of models to account for the…

Optical microscopy and multi-particle tracking are used to investigate the cross-correlated diffusion of quasi two-dimensional (2D) colloidal particles near an oil-water interface. It is shown that the effect of the interface on correlated…

Soft Condensed Matter · Physics 2015-06-15 Wei Zhang , Song Chen , Na Li , Jiazheng Zhang , Wei Chen

Controlling bond breaking is a long-standing goal in molecular physics. Infrared nanocavities are currently being developed for reaching exotic coupling regimes of cavity QED with a few molecules, but it is not well understood how chemical…

Quantum Physics · Physics 2025-11-24 Johan F. Triana , Felipe Herrera

CH$_3^+$, a cornerstone intermediate in interstellar chemistry, has recently been detected for the first time by the James Webb Space Telescope. The photodissociation of this ion is studied here. Accurate explicitly correlated…

Solar and Stellar Astrophysics · Physics 2024-04-24 Pablo del Mazo-Sevillano , Alfredo Aguado , Javier R. Goicoechea , Octavio Roncero

The ultraviolet (UV) photodissociation of amorphous water ice at different ice temperatures is investigated using molecular dynamics (MD) simulations and analytical potentials. Previous MD calculations of UV photodissociation of amorphous…

Chemical Physics · Physics 2010-05-21 C. Arasa , S. Andersson , H. M. Cuppen , E. F. van Dishoweck , G. -J. Kroes