Tunneling ionization in ultrashort laser pulses: edge-effect and remedyTunneling ionization of an atom in ultrashort laser pulses is considered. When the driving laser pulse is switched-on and -off with a steep slope, the photoelectron momentum distribution (PMD) shows…M. Klaiber, Q. Z. Lv, K. Z. Hatsagortsyan et al.·Jan 19, 2022SaveLearn
Radium Ion Optical ClockWe report the first operation of a Ra+ optical clock, a promising high-performance clock candidate. The clock uses a single trapped 226Ra+ ion and operates on the $7s\…C. A. Holliman, M. Fan, A. Contractor et al.·Jan 18, 2022SaveLearn
Positron emission in elastic collisions of fully ionized high-Z heavy ionsRecent theoretical investigations of pair-production probabilities for given sets of nuclear trajectories predict the observability of spontaneous positron emission in elastic collisions of heavy…Theo de Reus·Jan 18, 2022SaveLearn
Tune-out and magic wavelengths, and electric quadrupole transition properties of the singly charged alkaline-earth metal ionsIn continuation to our earlier reported data on the electric dipole (E1) matrix elements and lifetimes of the metastable states of the alkaline earth ions in [Atomic Data and Nuc. Data Tables …Mandeep Kaur, Sukhjit Singh, B. K. Sahoo et al.·Jan 18, 2022SaveLearn
Spectroscopic data of Rb-isoelectronic Zr and Nb ions for astrophysical applicationsWe present high-accuracy spectroscopy data of line strengths, transition probabilities and oscillator strengths for the allowed transitions among the nS1/2, nP1/2,3/2 and n'D3/2,5/2…Jyoti, Mandeep Kaur, Bindiya Arora et al.·Jan 18, 2022SaveLearn
Dispersion C3 coefficients for physisorption of heavy ions and atoms with graphene and carbon nanotubesIn the present work, the calculations have been performed for dispersion interaction between heavy elements (Zn+, Cd+, Hg+, Pb+, Zn, Cd, Hg, and Pb) with graphene and carbon nanotubes by…Harpreet Kaur, Neelam Shukla, Rajesh Srivastava et al.·Jan 18, 2022SaveLearn
Radiative properties of Cu-isoelectronic As, Se and Br ions for astrophysical applicationsWe present precise radiative data of line strengths, transition probabilities and oscillator strengths for the allowed transitions among the nS1/2, nP1/2,3/2, n'D3/2,5/2 and…Jyoti, Harpreet Kaur, Bindiya Arora et al.·Jan 18, 2022SaveLearn
Two-dipole and three-dipole interaction coefficients of GROUP XII elementsThe study of long-range interactions is increasingly becoming essential due to its various applications in cold atomic physics. These interactions can be conveniently expressed in terms of dispersion…Neelam Shukla, Harpreet Kaur, Bindiya Arora et al.·Jan 18, 2022SaveLearn
X-ray emission associated with radiative recombination for Pb82+ ions at threshold energiesFor bare lead ions, decelerated to the low beam energy of 10 MeV/u, the x-ray emission associated with radiative recombination (RR) at "cold collision" conditions has been studied at the electron…B. Zhu, A. Gumberidze, T. Over et al.·Jan 18, 2022SaveLearn
Correlation effects in high-harmonic generation from finite systemsUsing the Hubbard model we study how the process of high-order harmonic generation (HHG) is modified by beyond mean-field electron-electron correlation for both finite and bulk systems. A finite-size…Thomas Hansen, Simon Vendelbo Bylling Jensen, Lars Bojer Madsen·Jan 18, 2022SaveLearn
The a3+ state of KCs revisited: hyperfine structure analysis and potential refinementLaser-induced fluorescence spectra of the c3+(vc,Jc=Nc)→ a3+(va,Na = Jc 1) transitions excited from the ground X1+ state of…V. Krumins, M. Tamanis, R. Ferber et al.·Jan 18, 2022SaveLearn
Determination of hyperfine splittings and Land\'e gJ factors of 5s~2S1/2 and 5p~2P1/2,3/2 states of 111,113Cd+ for a microwave frequency standardRegarding trapped-ion microwave-frequency standards, we report on the determination of hyperfine splittings and Land\'e gJ factors of 111,113Cd+. The hyperfine splittings of the…J. Z. Han, R. Si, H. R. Qin et al.·Jan 18, 2022SaveLearn
Nondipole effects in tunneling ionization by intense laser pulsesThe limit of decreasing laser frequency can not be considered independently from nondipole effects due to increase in the laser-induced continuum electron speed in this limit. Therefore, in this…Lars Bojer Madsen·Jan 17, 2022SaveLearn
Rubidium atom spectral lineshapes in high intensity electric fields near an optical nanofibreThe integration of cold atomic systems with optical nanofibres is an increasingly important experimental platform. Here, we report on the spectra observed during a strongly driven, single-frequency,…Vandna Gokhroo, Fam Le Kien, Síle Nic Chormaic·Jan 16, 2022SaveLearn
Super-critical QED-effects via VP-energyThe properties of the QED-vacuum energy E VP under Coulomb super-criticality condition Z>Zcr,1 are explored in essentially non-perturbative approach. It is shown that in the…K. Sveshnikov, Yu. Voronina·Jan 15, 2022SaveLearn
Hamiltonian engineering of spin-orbit coupled fermions in a Wannier-Stark optical lattice clockEngineering a Hamiltonian system with tunable interactions provides opportunities to optimize performance for quantum sensing and explore emerging phenomena of many-body systems. An optical lattice…Alexander Aeppli, Anjun Chu, Tobias Bothwell et al.·Jan 15, 2022SaveLearn
A Smolyak algorithm adapted to a system-bath separation: application to an encapsulated molecule with large amplitude motionsA Smolyak algorithm adapted to system-bath separation is proposed for rigorous quantum simulations. This technique combines a sparse grid method with the system-bath concept in a specific…Ahai Chen, David M. Benoit, Yohann Scribano et al.·Jan 15, 2022SaveLearn
Lepton Number vs Coulomb Super-CriticalityThe non-perturbative effects of QED-vacuum reconstruction under influence of a supercritical EM-source (Z>Zcr,1) are considered in view of lepton number conservation. The question is here that…A. Krasnov, K. Sveshnikov·Jan 13, 2022SaveLearn
Doppler cooling of buffer-gas-cooled Barium monofluoride moleculesWe demonstrate one-dimensional Doppler cooling of a beam of buffer-gas cooled Barium monofluoride (BaF) molecules. The dependences of the cooling efficiency with the laser detuning, the bias filed…Yuhe Zhang, Zixuan Zeng, Qian Liang et al.·Jan 13, 2022SaveLearn
Zeeman slowing of a Group III atomWe realize the first Zeeman slower of an atom in the Main Group III of the periodic table, otherwise known as the "triel elements". Despite that our atom of choice (namely indium) does not have a…Xianquan Yu, Jinchao Mo, Tiangao Lu et al.·Jan 12, 2022SaveLearn
Analysis of RABITT time delays using the stationary multi-photon molecular R-matrix approachWe employ the recently developed multi-photon R-matrix method for molecular above-threshold photoionization to obtain second-order ionization amplitudes that govern the interference in RABITT…Jakub Benda, Zdeněk Mašín, Jimena D. Gorfinkiel·Jan 12, 2022SaveLearn
Analyzing the Rydberg-based omg architecture for 171Yb nuclear spinsNeutral alkaline earth(-like) atoms have recently been employed in atomic arrays with individual readout, control, and high-fidelity Rydberg-mediated entanglement. This emerging platform offers a…Neville Chen, Lintao Li, William Huie et al.·Jan 11, 2022SaveLearn
Static-field ionization model of He-like ions for diagnostics of light field intensityWe study static-field ionization of He-like ions with nuclear charge number in the range of 2 Z 36. Both the tunneling and over-the-barrier regimes are considered. We calculate the…Erik Lötstedt, Marcelo. F. Ciappina, Kaoru Yamanouchi·Jan 11, 2022SaveLearn
Ab initio calculations of the hyperfine structure of 109Cd, 109Cd+ and reevaluation of the nuclear quadrupole moment Q(109Cd)Large scale ab initio calculations of the electric contribution (i.e. the electric field gradient) to the electric quadrupole hyperfine interaction constants B for the 5p~2P3/2 state in…Benquan Lu, Xiaotong Lu, Tao Wang et al.·Jan 11, 2022SaveLearn
Evidence of Two-Source King Plot Nonlinearity in Spectroscopic Search for New BosonOptical precision spectroscopy of isotope shifts can be used to test for new forces beyond the Standard Model, and to determine basic properties of atomic nuclei. We measure isotope shifts on the…Joonseok Hur, Diana P. L. Aude Craik, Ian Counts et al.·Jan 10, 2022SaveLearn