scholarly journals Electrostatic Deflection of a Molecular Beam of Massive Neutral Particles: Fully Field-Oriented Polar Molecules within Superfluid Nanodroplets

2016 ◽  
Vol 7 (23) ◽  
pp. 4879-4883 ◽  
Author(s):  
Daniel J. Merthe ◽  
Vitaly V. Kresin
Keyword(s):  
Molecular Beam ◽  
Polar Molecules ◽  
Neutral Particles ◽  
Electrostatic Deflection

Electrostatic beam splitter for polar molecules

2018 ◽  
Vol 32 (29) ◽  
pp. 1850322 ◽  
Author(s):  
Sheng-Qiang Li
Keyword(s):  
Spatial Distribution ◽  
Molecular Beam ◽  
Beam Splitter ◽  
Longitudinal Velocity ◽  
Weak Field ◽  
Polar Molecules ◽  
Schematic Diagram ◽  
Electrical Field ◽  
Finite Element Software ◽  
Splitting Ratio

An electrostatic beam splitter composed of three charged poles for polar molecules in weak-field-seeking states is proposed. First, the schematic diagram is given. Then we calculate the spatial distribution of the electrical field using the finite element software. We simulate the dynamic process of the loading and splitting polar molecules using the classical Monte Carlo method. We investigate the influences of the longitudinal velocity of the incident molecular beam and the voltages on the performance of our beam splitter. In order to alter the splitting ratio of the molecular beam conveniently, we cut off the two output arms of beam splitter at a certain position. Then we study the influences of the voltages and cutting positions on the splitting ratio. At last, we discuss two methods of keeping the height of guiding center nearly unchanged.

scholarly journals Oriented Polar Molecules Trapped in Cold Helium Nanodropets: Electrostatic Deflection, Size Separation, and Charge Migration

2019 ◽  
Vol 123 (4) ◽  
Author(s):  
John W. Niman ◽  
Benjamin S. Kamerin ◽  
Daniel J. Merthe ◽  
Lorenz Kranabetter ◽  
Vitaly V. Kresin
Keyword(s):  
Polar Molecules ◽  
Charge Migration ◽  
Size Separation ◽  
Electrostatic Deflection

scholarly journals Specific Chemical Reactivities of Spatially Separated 3-Aminophenol Conformers with Cold Ca+ Ions

Science ◽  
2013 ◽  
Vol 342 (6154) ◽  
pp. 98-101 ◽  
Author(s):  
Yuan-Pin Chang ◽  
Karol Długołęcki ◽  
Jochen Küpper ◽  
Daniel Rösch ◽  
Dieter Wild ◽  
...  
Keyword(s):  
Molecular Beam ◽  
Spatial Separation ◽  
Specific Chemical ◽  
Rotational Isomers ◽  
Trans Conformer ◽  
Ca Ions ◽  
Electrostatic Deflection ◽  
Molecule Interaction ◽  
Selection Of

Many molecules exhibit multiple rotational isomers (conformers) that interconvert thermally and are difficult to isolate. Consequently, a precise characterization of their role in chemical reactions has proven challenging. We have probed the reactivity of specific conformers by using an experimental technique based on their spatial separation in a molecular beam by electrostatic deflection. The separated conformers react with a target of Coulomb-crystallized ions in a trap. In the reaction of Ca+ with 3-aminophenol, we find a twofold larger rate constant for the cis compared with the trans conformer (differentiated by the O–H bond orientation). This result is explained by conformer-specific differences in the long-range ion-molecule interaction potentials. Our approach demonstrates the possibility of controlling reactivity through selection of conformational states.

Application of molecular‐beam techniques to the study of neutral particles in thermal plasmas

1973 ◽  
Vol 44 (12) ◽  
pp. 5356-5360 ◽  
Author(s):  
Michael E. Gersh ◽  
Gary D. Sides ◽  
S.Y. Tang ◽  
E.E. Muschlitz
Keyword(s):  
Molecular Beam ◽  
Thermal Plasmas ◽  
Neutral Particles

Polar molecules engaged in pendular states captured by molecular-beam scattering experiments

2014 ◽  
Vol 90 (1) ◽  
Author(s):  
Luiz F. Roncaratti ◽  
David Cappelletti ◽  
Pietro Candori ◽  
Fernando Pirani
Keyword(s):  
Molecular Beam ◽  
Polar Molecules ◽  
Molecular Beam Scattering ◽  
Beam Scattering

Defects in Heavily-Doped MBE GaAs

1982 ◽  
Vol 40 ◽  
pp. 442-445
Author(s):  
C.B. Carter ◽  
D.M. DeSimone ◽  
T. Griem ◽  
C.E.C. Wood
Keyword(s):  
Molecular Beam Epitaxy ◽  
Molecular Beam ◽  
Heavily Doped

Molecular-beam epitaxy (MBE) is potentially an extremely valuable tool for growing III-V compounds. The value of the technique results partly from the ease with which controlled layers of precisely determined composition can be grown, and partly from the ability that it provides for growing accurately doped layers.

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