45 research outputs found
Das Leben der gottseligen Anna Katharina Emmerich : Augustinerin im ehemaligen Kloster Agnetenberg zu Dülmen in Westfalen
[Karl Erhard Schmöger
Bilder der heiligen Martyrer geschaut in der Vision von der gottseligen Anna Katharina Emmerich
aus d. von P. Schmöger verf. Leben d. Begnadigten genommen u. zsgest. von e. ihrer Verehre
Direct loading of nanoparticles under high vacuum into a Paul trap for levitodynamical experiments
Direct loading of nanoparticles under high vacuum into a Paul trap for levitodynamical experiments
Arbeit gesperrt(VLID)4867596Version of recor
An ultralow-noise superconducting radio-frequency ion trap for frequency metrology with highly charged ions
We present a novel ultrastable superconducting radio-frequency (RF) ion trap realized as a combination of an RF cavity and a linear Paul trap. Its RF quadrupole mode at 34.52 MHz reaches a quality factor of Q ≈ 2.3 × 105 at a temperature of 4.1 K and is used to radially confine ions in an ultralow-noise pseudopotential. This concept is expected to strongly suppress motional heating rates and related frequency shifts that limit the ultimate accuracy achieved in advanced ion traps for frequency metrology. Running with its low-vibration cryogenic cooling system, electron-beam ion trap, and deceleration beamline supplying highly charged ions (HCIs), the superconducting trap offers ideal conditions for optical frequency metrology with ionic species. We report its proof-of-principle operation as a quadrupole-mass filter with HCIs and trapping of Doppler-cooled 9Be+ Coulomb crystals