Probing the helium dimer by relativistic highly-charged projectilesWe study the fragmentation of He2 dimers into He+ ions by relativistic highly-charged projectiles. It is demonstrated that the interaction between an ultrafast projectile with an extremely…B. Najjari, Z. Wang, A. B. Voitkiv·May 5, 2021SaveLearn
Photon-momentum-induced molecular dynamics in photoionization of N2 at h=40 keVWe investigate K-shell ionization of N2 at 40 keV photon energy. Using a COLTRIMS reaction microscope we determine the vector momenta of the photoelectron, the Auger electron and both N+…M. Kircher, J. Rist, F. Trinter et al.·May 5, 2021SaveLearn
A Prototype of a Compact Rubidium-Based Optical Frequency Reference for Operation on NanosatellitesSpace-borne optical frequency references based on spectroscopy of atomic vapors may serve as an integral part of compact optical atomic clocks, which can advance global navigation systems, or can be…Aaron Strangfeld, Simon Kanthak, Max Schiemangk et al.·May 5, 2021SaveLearn
Recoil-Induced Asymmetry of Nondipole Molecular Frame Photoelectron Angular Distributions in the Hard X-ray RegimeWe investigate angular emission distributions of the 1s-photoelectrons of N2 ionized by linearly polarized synchrotron radiation at h =40 keV. As expected, nondipole contributions cause a…M. Kircher, J. Rist, F. Trinter et al.·May 5, 2021SaveLearn
Phase-Dependence of Resonant and Antiresonant Two-Photon ExcitationsMeasurements of the phase of two-photon matrix elements are presented for resonant and antiresonant two-color ionization of helium. A tunable, narrow-bandwidth, near-infrared (NIR) laser source is…Lorenz Drescher, Tobias Witting, Oleg Kornilov et al.·May 4, 2021SaveLearn
Observation of a narrow inner-shell orbital transition in atomic erbium at 1299 nmWe report on the observation and coherent excitation of atoms on the narrow inner-shell orbital transition, connecting the erbium ground state [Xe] 4f12 (3H6)6s2 to the…A. Patscheider, B. Yang, G. Natale et al.·May 4, 2021SaveLearn
Spectroscopy on the A1 ← X1+ Transition of Buffer-Gas Cooled AlClAluminum monochloride (AlCl) has been proposed as an excellent candidate for laser cooling. Here we present absorption spectroscopy measurements on the A1 ← X1+ transition in…J. R. Daniel, C. Wang, K. Rodriguez et al.·May 3, 2021SaveLearn
Trapping Ions and Atoms OpticallyIsolating neutral and charged particles from the environment is essential in precision experiments. For decades, this has been achieved by trapping ions with radio-frequency (rf) fields and neutral…Tobias Schaetz·May 3, 2021SaveLearn
Systematic study and uncertainty evaluation of P,T-odd molecular enhancement factors in BaFA measurement of the magnitude of the electric dipole moment of the electron (eEDM) larger than that predicted by the Standard Model (SM) of particle physics is expected to have a huge impact on the…Pi A. B. Haase, Diewertje J. Doeglas, Alexander Boeschoten et al.·May 3, 2021SaveLearn
Long-range atom-ion Rydberg molecule: A novel molecular binding mechanismWe present a novel binding mechanism where a neutral Rydberg atom and an atomic ion form a molecular bound state at large internuclear distance. The binding mechanism is based on Stark shifts and…Markus Deiß, Shinsuke Haze, Johannes Hecker Denschlag·May 3, 2021SaveLearn
Longitudinal Angular Momentum in Magneto-Mie Scattering: Quantum Vacuum Correction to the Einstein-De Haas effectThis work investigates the angular momentum of the electromagnetic quantum vacuum residing in a dielectric Mie sphere subject to the Faraday effect. Longitudinal electric modes are excited on its…B. A. van Tiggelen·May 3, 2021SaveLearn
Spectroscopy of Rydberg States in Erbium using Electromagnetically Induced TransparencyWe present a study of the Rydberg spectrum in 166Er for series connected to the 4f12 (3H6) 6s, Jc=13/2 and Jc=11/2 ionic core states using an all-optical detection based on…A. Trautmann, M. J. Mark, P. Ilzhöfer et al.·May 3, 2021SaveLearn
High-performance, compact optical standardWe describe a high-performance, compact optical frequency standard based on a microfabricated Rb vapor cell and a low-noise, external cavity diode laser operating on the Rb two-photon transition at…Zachary L. Newman, Vincent Maurice, Connor Fredrick et al.·May 3, 2021SaveLearn
Low-lying energy levels of 229Th35+ and the electronic bridge processThe nuclear transition between the ground and the low-energy isomeric state in the 229Th nucleus is of interest due to its high sensitivity to a hypothetical temporal variation of the fundamental…S. G. Porsev, C. Cheung, M. S. Safronova·May 2, 2021SaveLearn
Sub-Doppler spectra of sodium D lines in a wide range of magnetic field: theoretical studyWe compute the interaction of a sodium vapor with a static magnetic field ranging from 0 up to 1 Tesla, which allows to obtain the behavior of all Zeeman transitions as a function of the magnetic…Rodolphe Momier, Aram V. Papoyan, Claude Leroy·Apr 30, 2021SaveLearn
Formation of H+ via three body attachment of e+ to HThe formation of positive ions of antihydrogen H+ via the three body reaction (i) e+ + e- + H → e- + H+ is considered. In reaction…A. Jacob, C. Müller, A. B. Voitkiv·Apr 29, 2021SaveLearn
Three-electron correlations in strong laser field ionization: Spin induced effectsStrong field processes in the non-relativistic regime are insensitive to the electron spin, i.e. the observables appear to be independent of this electron property. This does not have to be the case…Dmitry Efimov, Artur Maksymov, Marcelo Ciapina et al.·Apr 29, 2021SaveLearn
Resonant elastic scattering of polarized electrons on H-like ionsThe polarization properties of the elastic electron scattering on H-like ions are investigated within the framework of the relativistic QED theory. The polarization properties are determined by a…D. M. Vasileva, K. N. Lyashchenko, A. B. Voitkiv et al.·Apr 29, 2021SaveLearn
Stereodynamics Imaging of Bromine Atomic Photofragments Eliminated from 1-Bromo-2-methylbutane Oriented via Hexapole State SelectorBoth single-laser and two-laser experiments were conducted to look into the ion-imaging of Br*(2P1/2) and Br(2P3/2) photo-fragmented from 1-bromo-2-methylbutane in the range 232-240 nm via a…Masaaki Nakamura, Hsiu-Pu Chang, King-Chuen Lin et al.·Apr 28, 2021SaveLearn
Understanding one-body losses in magnetically trapped metastable europium atomsWe report the measurement of one-body loss rates for magnetically trapped metastable europium atoms and the study of their loss mechanism. The loss of atoms observed in a magneto-optical trap is not…Hiroki Matsui, Yuki Miyazawa, Ryotaro Inoue et al.·Apr 28, 2021SaveLearn
Van der Waals molecules consisting of a zinc or cadmium atom interacting with an alkali-metal or alkaline-earth-metal atomAlkaline-earth-like transition-metal atoms such as Zn and Cd are promising candidates for precision measurements and quantum many-body physics experiments. Here, we theoretically investigate the…Klaudia Zaremba-Kopczyk, Michał Tomza·Apr 27, 2021SaveLearn
Cavity-immune features in the spectra of superradiant crossover laser pulsesLasing in the bad cavity regime has promising applications in precision metrology due to the reduced sensitivity to cavity noise. Here we investigate the spectral properties and phase behavior of…Mikkel Tang, Stefan A. Schäffer, Asbjørn A. Jørgensen et al.·Apr 27, 2021SaveLearn
An efficient high-current circuit for fast radio-frequency spectroscopy in cold atomic gasesWe design and implement a low-impedance, high-current radio-frequency (RF) circuit, enabling fast coherent coupling between magnetic levels in cold alkali atomic samples. It is based on a compact…F. Scazza, G. Del Pace, L. Pieri et al.·Apr 26, 2021SaveLearn
Watt-level blue light for precision spectroscopy, laser cooling and trapping of strontium and cadmium atomsHigh-power and narrow-linewidth laser light is a vital tool for atomic physics, being used for example in laser cooling and trapping and precision spectroscopy. Here we produce Watt-level laser…Jonathan N. Tinsley, Satvika Bandarupally, Jussi-Pekka Penttinen et al.·Apr 24, 2021SaveLearn
Coherent Control of Ultrafast Bond Making and Subsequent Molecular Dynamics: Demonstration of Final-State Branching Ratio ControlQuantum coherent control of ultrafast bond making and the subsequent molecular dynamics is crucial for the realization of a new photochemistry, where a shaped laser field is actively driving the…Liat Levin, Daniel M. Reich, Moran Geva et al.·Apr 23, 2021SaveLearn