Results 121 to 130 of about 1,480,319 (221)

Above-threshold scattering about a Feshbach resonance for ultracold atoms in an optical collider

Nature Communications, 2017
Studies on energy-dependent scattering of ultracold atoms were previously carried out near zero collision energies. Here, the authors observe a magnetic Feshbach resonance in ultracold Rb collisions for above-threshold energies and their method can also ...
Milena S. J. Horvath, Ryan Thomas, Eite Tiesinga, Amita B. Deb, Niels Kjærgaard   +4 more
doaj   +1 more source

Observation of Heteronuclear Feshbach Molecules from a $^{85}$Rb - $^{87}$Rb gas

, 2009
We report on the observation of ultracold heteronuclear Feshbach molecules. Starting with a $^{87}$Rb BEC and a cold atomic gas of $^{85}$Rb, we utilize previously unobserved interspecies Feshbach resonances to create up to 25,000 molecules.
Papp, S. B., Wieman, C. E.
core   +1 more source

Feshbach resonance-induced Fano interference in photoassociation [PDF]

Journal of Physics B: Atomic, Molecular and Optical Physics, 2009
We consider photoassociation from a state of two free atoms when the continuum state is close to a magnetic field induced Feshbach resonance and analyze Fano interference in photoassociation. We show that the minimum in photoassociation profiles characterized by the Fano asymmetry parameter $q$ is independent of laser intensity, while the maximum ...
Deb, Bimalendu, Agarwal, G. S.
openaire   +2 more sources

Vibrational Relaxation of D2O Induced by Collision with He: A Rigid Bender Close Coupling Study

ChemPhysChem, Volume 25, Issue 15, August 1, 2024.
The vibrational quenching cross sections for the relaxation of the D2O (ν2=1,3ka,kc) molecule by collision with He are presented. A monotonic increase of the cross sections is observed for high collision energies. Abstract The vibrational relaxation of the first excited bending state of D2O induced by collision with He is studied at the close coupling ...
Ricardo Manuel García‐Vázquez, Lisán David Cabrera‐González, Otoniel Denis Alpizar, Thierry Stoecklin   +3 more
wiley   +1 more source

Study of Efimov physics in two nuclear-spin sublevels of 7Li

, 2010
Efimov physics in two nuclear-spin sublevels of bosonic lithium is studied and it is shown that the positions and widths of recombination minima and Efimov resonances are identical for both states within the experimental errors which indicates that the ...
Abraham, Barontini, Braaten, D'Incao, D'Incao, Derevianko, Efimov, Esry, Fedichev, Ferlaino, Gross, Gross, Gross, Hanna, Hanna, Huckans, Ji, Kempen, Knoop, Kokkelmans, Kraemer, Lange, Lev Khaykovich, Lompe, Lompe, Lorenzen, Marcelis, Marinescu, Mies, Moerdijk, Nakajima, Nielsen, Noam Gross, Olga Machtey, Ottenstein, Platter, Pollack, Servaas Kokkelmans, Thompson, van Abeelen, von Stecher, von Stecher, Weber, Wenz, Williams, Yan, Zaccanti, Zav Shotan, Zemke   +48 more
core   +1 more source

Feshbach Resonance in Dense Ultracold Fermi Gases [PDF]

Physical Review Letters, 2003
We propose a coherent framework allowing to deal with many-body effects in dense ultracold Fermi gases in the presence of a Feshbach resonance. We show that the simple effect of Pauli exclusion induces a strong modification of the basic scattering properties, leading in particular to an energy dependence of the effective scattering length on the scale ...
openaire   +3 more sources

Low‐lying Negative Ion States Probed in Potassium – Ethanol Collisions

ChemPhysChem, Volume 25, Issue 14, July 15, 2024.
A joint experimental and theoretical investigation on ethanol negative ion formation by charge transfer is reported for the first time. The electronic state spectroscopy of the lowest‐lying anionic states is comprehensively discussed rendering special relevance to the role of the different shape and core‐excited Feshbach resonances, while the ...
Ana Isabel Lozano, Sarvesh Kumar, Pedro J. S. Pereira, Boutheïna Kerkeni, Gustavo García, Paulo Limão‐Vieira   +5 more
wiley   +1 more source

Radio-frequency spectrum of the Feshbach molecular state to deeply bound molecular states in ultracold 40K Fermi gases

New Journal of Physics, 2015
Spectroscopic measurements are made and obtained for three molecular levels within 50 MHz of the atomic continuum, along with their variation of magnetic field in ultracold ^40 K Fermi gases.
Lianghui Huang, Pengjun Wang, B P Ruzic, Zhengkun Fu, Zengming Meng, Peng Peng, J L Bohn, Jing Zhang   +7 more
doaj   +1 more source

Magnetic Feshbach resonances between atoms in ^{2}S and ^{3}P_{0} states: Mechanisms and dependence on atomic properties

Physical Review Research, 2023
Magnetically tunable Feshbach resonances exist in ultracold collisions between atoms in ^{2}S and ^{3}P_{0} states, such as an alkali-metal atom colliding with Yb or Sr in a clock state.
Bijit Mukherjee, Matthew D. Frye, Jeremy M. Hutson   +2 more
doaj   +1 more source

Molecular scale nanophotonics: hot carriers, strong coupling, and electrically driven plasmonic processes

Nanophotonics, Volume 13, Issue 13, Page 2281-2322, May 2024.
Abstract Plasmonic modes confined to metallic nanostructures at the atomic and molecular scale push the boundaries of light–matter interactions. Within these extreme plasmonic structures of ultrathin nanogaps, coupled nanoparticles, and tunnelling junctions, new physical phenomena arise when plasmon resonances couple to electronic, exitonic, or ...
Yunxuan Zhu, Markus B. Raschke, Douglas Natelson, Longji Cui   +3 more
wiley   +1 more source