A Theoretical Study on Laser Cooling Feasibility of Group IVA Hydrides XH (X = Si, Ge, Sn, and Pb): The Role of Electronic State Crossing [PDF]
Frontiers in Chemistry, 2020 The feasibility of direct laser cooling of SiH, GeH, SnH, and PbH is investigated and assessed based upon first principles. The internally contracted multi-reference configuration interaction method with the Davidson correction is applied.
Donghui Li +7 more
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Laser cooling with intermediate state of spin–orbit coupling of LuF molecule [PDF]
Scientific Reports, 2023 This work presents a theoretical study of the laser cooling feasibility of the molecule LuF, in the fine structure level of approximation. An ab-initio complete active space self-consistent field (CASSCF)/MRCI with Davidson correction calculation has ...
N. El-Kork +6 more
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Production of Ultracold XOH (X = Ca, Sr, Ba) Molecules by Direct Laser Cooling: A Theoretical Study Based on Accurate Ab Initio Calculations [PDF]
MoleculesEffective laser cooling schemes are fundamental for preparing ultracold triatomic molecules. Here, efficient laser cooling strategies for alkaline-earth hydroxides (XOH, X = Ca, Sr, Ba) are proposed using high-precision quantum calculations. By mapping Λ-
Jingbo Wei +6 more
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Laser cooling of antihydrogen atoms. [PDF]
Nature, 2021 AbstractThe photon—the quantum excitation of the electromagnetic field—is massless but carries momentum. A photon can therefore exert a force on an object upon collision1. Slowing the translational motion of atoms and ions by application of such a force2,3, known as laser cooling, was first demonstrated 40 years ago4,5. It revolutionized atomic physics
Baker CJ +57 more
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Production of ultracold polyatomic molecules with strong polarity by laser cooling: A detailed theoretical study on CaNC and SrNC [PDF]
Frontiers in Chemistry, 2022 Laser cooling molecules to the ultracold regime is the prerequisite for many novel science and technologies. It is desirable to take advantage of theoretical approaches to explore polyatomic molecular candidates, which are capable of being cooled to the ...
Wensha Xia +5 more
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A theoretical study on excited-state dynamical properties and laser cooling of zinc monohydride including spin-orbit couplings [PDF]
Frontiers in ChemistryBy means of highly accurate ab initio and dynamical calculations, we identify a suitable laser cooling candidate that contains a transition metal element, namely zinc monohydride (ZnH).
Donghui Li +4 more
doaj +2 more sources
Laser Cooling Positronium with Broadband Laser Pulses
Journal of Physics: Conference SeriesAbstract The first successful demonstration of broadband laser cooling of positronium (Ps) atoms, obtained within the AEgIS experiment at CERN, is presented here. By employing a custom-designed pulsed alexandrite laser system at 243 nm featuring long-duration pulses of 70 ns and an energy able to saturate the 13S–23P transition over the ...
R. Caravita +64 more
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Towards Manufacturing High-Quality Film-Cooling Holes Using Femtosecond Laser Combined with Abrasive Flow [PDF]
MicromachinesFilm-cooling holes are the key cooling structures of turbine blades, and there are still great challenges in manufacturing high-quality film-cooling holes.
Lifei Wang +4 more
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Physical Review Letters, 2010 Currently, laser cooling schemes are fundamentally based on the weak coupling regime. This requirement sets the trap frequency as an upper bound to the cooling rate. In this work we present a numerical study that shows the feasibility of cooling in the strong-coupling regime which then allows cooling rates that are faster than the trap frequency with ...
Machnes, S +4 more
openaire +4 more sources
, 2021 Review article prepared for Advances in Atomic, Molecular & Optical Physics.
Fitch, N. J., Tarbutt, M. R.
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