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Stark deceleration has been utilized for slowing and trapping several species of neutral, ground-state polar molecules generated in a supersonic beam expansion. Due to the finite physical dimension of the electrode array and practical…

Atomic Physics · Physics 2009-11-10 Eric R. Hudson , J. R. Bochinski , H. J. Lewandowski , Brian C. Sawyer , Jun Ye

Stark deceleration enables the production of cold and dense molecular beams with applications in trapping, collisional studies, and precision measurement. Improving the efficiency of Stark deceleration, and hence the achievable molecular…

Chemical Physics · Physics 2020-07-22 David Reens , Hao Wu , Alexander Aeppli , Anna McAuliffe , Piotr Wcisło , Tim Langen , Jun Ye

Stark deceleration allows for precise control over the velocity of a pulsed molecular beam and, by the nature of its limited phase-space acceptance, reduces the energy width of the decelerated packet. We describe an alternate method of…

Atomic Physics · Physics 2015-05-13 L. P. Parazzoli , N. Fitch , D. S. Lobser , H. J. Lewandowski

We have designed and implemented a new Stark decelerator based on wire electrodes, which is suitable for ultrahigh vacuum applications. The 100 deceleration stages are fashioned out of 0.6 mm diameter tantalum and the array's total length…

Atomic Physics · Physics 2010-09-28 Adela Marian , Henrik Haak , Peter Geng , Gerard Meijer

We demonstrate feedback control optimization for the Stark deceleration and trapping of neutral polar molecules using evolutionary strategies. In a Stark-decelerator beamline pulsed electric fields are used to decelerate OH radicals and…

A new type of decelerator is presented where polar neutral molecules are guided and decelerated using the principle of traveling electric potential wells, such that molecules are confined in stable three-dimensional traps throughout. This…

Atomic Physics · Physics 2010-05-24 Andreas Osterwalder , Samuel A. Meek , Georg Hammer , Henrik Haak , Gerard Meijer

A Stark decelerator is an effective tool for controlling motional degrees of freedom of polar molecules. Due to technical limitations, many of the current Stark decelerators focus on molecules in low-field-seeking quantum states and are…

Atomic Physics · Physics 2017-05-25 Demitri Y. Balabanov , Liam M. Duffy

Stark deceleration is a technique that uses time-varying inhomogeneous electric fields to decelerate polar molecules for various molecular beam and trapping experiments. New ring-geometry Stark decelerators with continuously varying…

Chemical Physics · Physics 2017-12-20 Yomay Shyur , Jason A. Bossert , H. J. Lewandowski

Beams of neutral polar molecules in a low-field seeking quantum state can be slowed down using a Stark decelerator, and can subsequently be loaded and confined in electrostatic quadrupole traps. The efficiency of the trap loading process is…

The transverse motion inside a Stark decelerator plays a large role in the total efficiency of deceleration. We differentiate between two separate regimes of molecule loss during the slowing process. The first mechanism involves distributed…

Atomic Physics · Physics 2008-06-23 Brian C. Sawyer , Benjamin K. Stuhl , Benjamin L. Lev , Eric R. Hudson , Jun Ye

We present experiments on decelerating and trapping ammonia molecules using a combination of a Stark decelerator and a traveling wave decelerator. In the traveling wave decelerator a moving potential is created by a series of ring-shaped…

We report on the electrostatic trapping of neutral SrF molecules. The molecules are captured from a cryogenic buffer-gas beam source into the moving traps of a 4.5 m long traveling-wave Stark decelerator. The SrF molecules in…

In a Stark decelerator, polar molecules are slowed down and focussed by an inhomogeneous electric field which switches between two configurations. For the decelerator to work, it is essential that the molecules follow the changing electric…

Atomic Physics · Physics 2015-05-18 T. E. Wall , S. K. Tokunaga , E. A. Hinds , M. R. Tarbutt

We present an analysis of the deceleration and trapping of heavy diatomic molecules in low-field seeking states by a moving electric potential. This moving potential is created by a 'ring-decelerator', which consists of a series of…

We report on the Stark deceleration of a pulsed molecular beam of NO radicals. Stark deceleration of this chemically important species has long been considered unfeasible due to its small electric dipole moment of 0.16 D. We prepared the NO…

Chemical Physics · Physics 2013-01-11 Xingan Wang , Moritz Kirste , Gerard Meijer , Sebastiaan Y. T. van de Meerakker

We produce SO_2 molecules with a centre of mass velocity near zero using a Stark decelerator. Since the initial kinetic energy of the supersonic SO_2 molecular beam is high, and the removed kinetic energy per stage is small, 326…

Atomic Physics · Physics 2009-11-13 O. Bucicov , M. Nowak , S. Jung , G. Meijer , E. Tiemann , Ch. Lisdat

Recently, a decelerator for neutral polar molecules has been presented that operates on the basis of macroscopic, three-dimensional, traveling electrostatic traps (Osterwalder et al., Phys. Rev. A 81, 051401 (2010)). In the present paper, a…

Cryogenic buffer-gas beams are a promising method for producing bright sources of cold molecular radicals for cold collision and chemical reaction experiments. In order to use these beams in studies of reactions with controlled collision…

Chemical Physics · Physics 2015-06-18 M. I. Fabrikant , Tian Li , N. J. Fitch , N. Farrow , Jonathan D. Weinstein , H. J. Lewandowski

We describe the production of cold, slow-moving LiH molecules. The molecules are produced in the ground state using laser ablation and supersonic expansion, and 68% of the population is transferred to the rotationally excited state using…

Atomic Physics · Physics 2015-05-13 S. K. Tokunaga , J. M. Dyne , E. A. Hinds , M. R. Tarbutt

We report the Stark deceleration of CaF molecules in the strong-field seeking ground state and in a weak-field seeking component of a rotationally-excited state. We use two types of decelerator, a conventional Stark decelerator for the…

Atomic Physics · Physics 2017-09-13 T. E. Wall , J. F. Kanem , J. M. Dyne , J. J. Hudson , B. E. Sauer , E. A. Hinds , M. R. Tarbutt
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