We have modelled and used polarisation spectroscopy to lock a very compact, high-performance extended cavity diode 85 Ž X . laser system to the Rb Fs3 to F s4 transition. The laser has a linewidth of 135 kHz. Using this system we have trapped and cooled 1.5=10 Rb atoms in a magneto-optical trap. Atoms remained continuously trapped in the MOT for several minutes. q 1999 Elsevier Science B.V. All...

The faba bean (Vicia L.) is cultivated in the Mediterranean and Aegean regions only. It a rich source of protein an important food feed for human animal consumption. Faba beans have narrow genetic base their improvement through hybridization not feasible because high pollen self-incompatibility. This study was carried out using embryonic axis cv. Filiz99 Eresen87 regenerated on MS medium contai...

introduction: telomeric repeat amplification protocol assay (trap assay) is a standard established technique to detect the activity (expression) of telomerase in the cancerous samples. it includes a time-consuming procedure that has significant drawbacks such as high cost, complicacy, time-consuming procedure, equipment-dependent steps and false-positive signals caused by inclusion of pcr insid...

Hydrogen and deuterium Rydberg atoms, initially moving at velocities of 600 m/s and 560 m/s, respectively, in pulsed supersonic beams, have been decelerated and electrostatically trapped following adiabatic 90◦ deflection from their initial axis of propagation to minimise collisions with the trailing edge of the gas pulses. The time evolution of the potential energy surfaces, over which the ato...

A new method for the manipulation of a pre-excited l=1 diocotron mode in a pure electron plasma in a Malmberg-Penning trap is proposed and analyzed. The plasma is passively coupled to an external oscillatory circuit with slowly varying parameters. A threshold on the coupling strength is derived beyond which the plasma is continuously self-phase-locked to the external circuit. In the case of a l...

We present the design, implementation and characterization of a dual-species magneto-optical trap (MOT) for fermionic Li and K atoms with large atom numbers. The MOT simultaneously contains 5.2 × 10 Li-atoms and 8.0 × 10 K-atoms, which are continuously loaded by a Zeeman slower for Li and a 2D-MOT for K. The atom sources induce capture rates of 1.2 × 10 Li-atoms/s and 1.4 × 10 K-atoms/s. Trap l...

In this work a family of quantum nondemolition variables for the case of a particle caught in a Paul trap is obtained. Afterwards, in the context of the so called restricted path integral formalism, a continuous measuring process for this family of parameters is considered, and then the corresponding propagators are calculated. In other words, the time evolution of a particle in a Paul trap, wh...

Ultracold dysprosium gases, with a magnetic moment 10 times that of alkali atoms and equal only to terbium as the most magnetic atom, are expected to exhibit a multitude of fascinating collisional dynamics and quantum dipolar phases, including quantum liquid crystal physics. We report the first laser cooling and trapping of half a billion Dy atoms using a repumper-free magneto-optical trap (MOT...

We experimentally investigate trap-loss spectra of the cesium 6 S 1/2 ( F = 4) → 71 P 3/2 Rydberg transition by combining atomic magneto-optical trap with narrow-linewidth, continuously tunable 318.6 nm ultraviolet laser. Specifically, atoms in are excited to state due laser single-step excitation, which leads reduction fluorescence. Based on spectroscopy technology, Autler–Townes (AT) splittin...