Results 1 to 10 of about 384 (129)

Random Matrix Theory Analysis of a Temperature-Related Transformation in Statistics of Fano–Feshbach Resonances in Thulium Atoms [PDF]

Entropy, 2020
Recently, the transformation from random to chaotic behavior in the statistics of Fano–Feshbach resonances was observed in thulium atoms with rising ensemble temperature.
Alexey Akimov, Emil T Davletov
exaly   +4 more sources

Feshbach resonances in the F + H2O → HF + OH reaction [PDF]

Nature Communications, 2020
Feshbach resonances are transiently trapped states along a reaction coordinate, providing a probe to the reaction’s potential energy surface (PES) but difficult to analyze in polyatomic systems. Here the authors identify Feshbach resonances in a reacting
Xiaoren Zhang, Lulu Li, Jun Chen, Shu Liu, Dong H. Zhang   +4 more
doaj   +2 more sources

Phase protection of Fano-Feshbach resonances [PDF]

Nature Communications, 2020
The lifetime of decaying quantum states has been thought to depend on the strength of the coupling causing the decay. Here the authors demonstrate that quantum mechanical interference can dominate this process, observing Fano-Feshbach resonance lifetimes
Alexander Blech, Yuval Shagam, Nicolas Hölsch, Prerna Paliwal, Wojciech Skomorowski, John W. Rosenberg, Natan Bibelnik, Oded Heber, Daniel M. Reich, Edvardas Narevicius, Christiane P. Koch   +10 more
doaj   +2 more sources

Feshbach Resonances in p-Wave Three-Body Recombination within Fermi-Fermi Mixtures of Open-Shell ^{6}Li and Closed-Shell ^{173}Yb Atoms [PDF]

Physical Review X, 2020
We report on the observation of magnetic Feshbach resonances in a Fermi-Fermi mixture of ultracold atoms with extreme mass imbalance and on their unique p-wave dominated three-body recombination processes. Our system consists of open-shell alkali-metal ^{
Alaina Green, Hui Li, Jun Hui See Toh, Xinxin Tang, Katherine C. McCormick, Ming Li, Eite Tiesinga, Svetlana Kotochigova, Subhadeep Gupta   +8 more
doaj   +2 more sources

The Role of Benzonitrile Chlorination Explored by Dissociative Electron Attachment. [PDF]

Chemphyschem
Experimental and theoretical dissociative electron attachment study of 2‐ and 4‐chlorobenzonitrile. The dissociative electron attachment process to ortho‐ and para‐chlorobenzonitrile was investigated in the 0–12 eV energy range with a crossed‐beam time‐of‐flight mass spectrometer, supported by quantum chemical scattering calculations.
Guerra P, Mendes M, de Miranda EGF, Rodrigues R, Cornetta LM, da Silva FF.   +5 more
europepmc   +2 more sources

The Feshbach Resonances Applied to the Calculation of Stark Broadening of Ionized Spectral Lines: An Example of Interdisciplinary Research

Atoms
In the present paper, we revisit the determination of Feshbach resonances in the elastic and fine-structure cross-sections of the spectral lines of ionized atoms colliding with electrons.
Haykel ELABIDI, Sylvie SAHAL-BRÉCHOT
exaly   +3 more sources

Polaritonic quantum matter. [PDF]

Nanophotonics
Abstract Polaritons are quantum mechanical superpositions of photon states with elementary excitations in molecules and solids. The light–matter admixture causes a characteristic frequency‐momentum dispersion shared by all polaritons irrespective of the microscopic nature of material excitations that could entail charge, spin, lattice or orbital ...
Basov DN, Asenjo-Garcia A, Schuck PJ, Zhu X, Rubio A, Cavalleri A, Delor M, Fogler MM, Liu M.   +8 more
europepmc   +2 more sources

Probing the activated complex of the F + NH3 reaction via a dipole-bound state [PDF]

Nature Communications
Experimental characterization of the transition state poses a significant challenge due to its fleeting nature. Negative ion photodetachment offers a unique tool for probing transition states and their vicinity.
Rui Zhang, Shuaiting Yan, Hongwei Song, Hua Guo, Chuangang Ning   +4 more
doaj   +2 more sources

Reshaped three-body interactions and the observation of an Efimov state in the continuum [PDF]

Nature Communications
Efimov trimers are exotic three-body quantum states that emerge from the different types of three-body continua in the vicinity of two-atom Feshbach resonances. In particular, as the strength of the interaction is decreased to a critical point, an Efimov
Yaakov Yudkin, Roy Elbaz, José P. D’Incao, Paul S. Julienne, Lev Khaykovich   +4 more
doaj   +2 more sources

The Semiclassical Limit of the Gailitis Formula Applied to Electron Impact Broadening of Spectral Lines of Ionized Atoms

Atoms, 2021
The present paper revisits the determination of the semi-classical limit of the Feshbach resonances which play a role in electron impact broadening (the so-called “Stark“ broadening) of isolated spectral lines of ionized atoms. The Gailitis approximation
Sylvie Sahal-Bréchot
doaj   +1 more source