Origin of the low energy resonance in the double photoionization of pyrene and coronene, and its absence in the double photoionization of corannuleneThe low energy resonance in the double photoionization of the aromatic hydrocarbons pyrene (C16H10) and coronene (C24H12) is investigated theoretically using an approach based on…Ralf Wehlitz, David L. Huber·Aug 6, 2022SaveLearn
Non-linear effects in TXRF spectroscopy: Study on the influence of the sample amountIn this work we have studied the limitations of the TXRF spectroscopy in the upper limit of validity of the technique, when the analyzed specimen ceases to be a thin film. We have evaluated the…Leonardo Bennun, Maria Natalia Piol, Cristina Vazquez·Aug 5, 2022SaveLearn
Rayleigh scattering from hydrogen atoms including resonances and high photon energiesThe non-relativistic cross section from Rayleigh scattering by hydrogen atoms in the ground state is calculated over a wide range of photon energies (< 0.8 keV). Evaluations are performed in terms…René D. Rohrmann, Matías Vera Rueda·Aug 3, 2022SaveLearn
Isolated-core quadrupole excitation of highly excited autoionizing Rydberg statesThe structure and photoexcitation dynamics of high lying doubly excited states of the strontium atom with high angular momenta are studied in the vicinity of the Sr+(N=5) threshold. The spectra…M. Génévriez, U. Eichmann·Aug 3, 2022SaveLearn
Disappearance and reappearance of above-threshold-ionization peaksIt is shown that above-threshold ionization peaks disappear when the kinetic energy associated with the nondipole radiation-pressure-induced photoelectron momentum in the laser propagation direction…Lars Bojer Madsen·Aug 3, 2022SaveLearn
Invited Review: Micro-fabricated components for cold atom sensorsLaser cooled atoms have proven transformative for precision metrology, playing a pivotal role in state-of-the-art clocks and interferometers, and having the potential to provide a step-change in our…J. P. McGilligan, K. Gallacher, P. F. Griffin et al.·Aug 1, 2022SaveLearn
Constraints on Spin-Spin-Velocity-Dependent InteractionThe existence of exotic spin-dependent forces may shine light on new physics beyond the Standard Model. We utilize two iron shielded SmCo5 electron-spin sources and two optically pumped…Wei Ji, Weipeng Li, Pavel Fadeev et al.·Aug 1, 2022SaveLearn
A iterative finite method approach to Kohn-Sham equations of light atoms: Density Functional Theory tutorial for undergraduate studentsIn this article we are going to study the FEM solution to the Density Functional description of Helium. Solving self-consistently including electron-electron repulsion and exchange-correlation…Abhishek Joshi, Sinuhe Perea-Puente·Aug 1, 2022SaveLearn
Coherence of Rabi oscillations with spin exchangeRabi measurements in atomic vapor cells are of current interest in a range of microwave imaging and sensing experiments, but are increasingly in a parameter space outside of theoretical studies of…Chris Kiehl, Daniel Wagner, Ting-Wei Hsu et al.·Jul 30, 2022SaveLearn
Precision Measurement of the Excited State Land\'e g-factor and Diamagnetic Shift of the Cesium D2 LineWe have performed saturated absorption spectroscopy on the cesium D2 line in 3 T and 7 T magnetic fields. By means of sideband spectroscopy on the extreme angular momentum states we have…Hans Stærkind, Kasper Jensen, Jörg H. Müller et al.·Jul 29, 2022SaveLearn
About the standard methodology in electron-molecule collision physicsThe article discusses the correctness of the assumption about the similarity of molecular continuum electron functions with wave functions in electron-atom scattering. The elastic scattering of slow…A. S. Baltenkov, I. Woiciechowski·Jul 29, 2022SaveLearn
Quantum electrodynamics of two-body systems with arbitrary massesWe perform a calculation of quantum electrodynamics effects in excited states with l>1 of arbitrary two-body systems up to α6\,μ order. The obtained results are valid for hadronic atoms,…Jacek Zatorski, Vojtěch Patkóš, Krzysztof Pachucki·Jul 28, 2022SaveLearn
FitAik: a package to calculate least-square fitted atomic transitions probabilities. Application to the Er+ lanthanide ionWe present a new method implemented in our new package FitAik, to perform least-squares fitting of calculated and experimental atomic transition probabilities, by using the mono-electronic…Maxence Lepers, Olivier Dulieu, Jean-François Wyart·Jul 28, 2022SaveLearn
High-accuracy optical clocks based on group 16-like highly charged ionsWe identify laser-accessible transitions in group 16-like highly charged ions as candidates for high-accuracy optical clocks, including S-, Se-, and Te-like systems. For this class of ions, the…Saleh O. Allehabi, S. M. Brewer, V. A. Dzuba et al.·Jul 27, 2022SaveLearn
A grating-chip atomic fountainCold atom fountain clocks provide exceptional long term stability as they increase interrogation time at the expense of a larger size. We present a compact cold atom fountain using a grating…Ben Lewis, Rachel Elvin, Aidan S. Arnold et al.·Jul 26, 2022SaveLearn
Micro-machined deep silicon atomic vapor cellsUsing a simple and cost-effective water jet process, silicon etch depth limitations are overcome to realize a 6\,mm deep atomic vapor cell. While the minimum silicon feature size was limited to a…S. Dyer, P. F. Griffin, A. S. Arnold et al.·Jul 26, 2022SaveLearn
An atom interferometer driven by a picosecond frequency combWe demonstrate a light-pulse atom interferometer based on the diffraction of free-falling atoms by a picosecond frequency-comb laser. More specifically, we coherently split and recombine wave packets…Cyrille Solaro, Clément Debavelaere, Pierre Cladé et al.·Jul 26, 2022SaveLearn
Photoionization of chlorine, sulfur, phosphorus and a hypothesis to quench metastable statesThe objective of our proposal is to study the photoionization of Chlorine, Sulfur, and Phosphorus ions using the unique high resolution capability of 10.0.1 beamline in the ALS. These species are…Guillermo Hinojosa·Jul 25, 2022SaveLearn
Theoretical studies on multiple ionisation and electron capture processes in heavy ion induced M-shell ionisationMultiple ionisation and electron capture are found to be vital mechanisms for K and L x-ray emissions along with the direct coulomb ionisation in heavy ion-atom collisions. Naturally, these two…Soumya Chatterjee, Sumana Ghosh, D. Mitra·Jul 25, 2022SaveLearn
Scalable quantum logic spectroscopyIn quantum logic spectroscopy (QLS), one species of trapped ion is used as a sensor to detect the state of an otherwise inaccessible ion species. This extends precision measurements to a broader…Kaifeng Cui, Jose Valencia, Kevin T. Boyce et al.·Jul 24, 2022SaveLearn
Evolution of the ionic polarization in multiple sequential ionization: general equations and an illustrative exampleThe modern Free-Electron-Lasers generate a highly intense polarized radiation which initiate a sequence of ionization and decay events. Their probability depends on the polarization of each state as…Elena V. Gryzlova, Alexei N. Grum-Grzhimailo, Maksim D. Kiselev et al.·Jul 22, 2022SaveLearn
A Digital Alkali Spin MaserSelf-oscillating atomic magnetometers, in which the precession of atomic spins in a magnetic field is driven by resonant modulation, offer high sensitivity and dynamic range. Phase-coherent feedback…Stuart Ingleby, Paul Griffin, Terry Dyer et al.·Jul 22, 2022SaveLearn
Hyperfine-structure-resolved laser spectroscopy of many-electron highly charged ionsHyperfine-structures of highly charged ions (HCIs) are favourable spectroscopic targets for exploring fundamental physics as well as nuclear properties. Recent proposals of HCI atomic clocks…Naoki Kimura, Priti, Yasutaka Kono et al.·Jul 22, 2022SaveLearn
Ultra-low noise, bi-polar, programmable current sourcesWe present the design process and implementation of fully open-source, ultra-low noise programmable current source systems in two configurations. Although originally designed as coil drivers for…M. S. Mrozowski, I. C. Chalmers, S. J. Ingleby et al.·Jul 21, 2022SaveLearn
Rotational spectroscopy of a single molecular ion at sub part-per-trillion resolutionWe use quantum-logic spectroscopy (QLS) and interrogate rotational transitions of a single CaH+ ion with a highly coherent frequency comb, achieving a fractional statistical uncertainty for a…Alejandra L. Collopy, Julian Schmidt, Dietrich Leibfried et al.·Jul 20, 2022SaveLearn