1. Optimizing the resolution of the alternating-gradientm/μselector
- Author
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Gerard Meijer, Henrik Haak, Jochen Küpper, Stephan Putzke, and Frank Filsinger
- Subjects
Physics ,Dipole ,Quantum state ,Electric field ,Resolution (electron density) ,Moment (physics) ,Molecule ,Atomic physics ,Conformational isomerism ,Molecular beam ,Atomic and Molecular Physics, and Optics - Abstract
We study the focusing of large neutral molecules in a molecular beam using electric fields. Since all quantum states of these molecules are high-field seeking under the practical experimental conditions, alternating gradient (AG) focusing has to be applied. The optimal ac frequency that yields the highest transmission depends on m/{mu}, where {mu} is the dipole moment and m denotes the mass. Therefore, an AG focuser can be used to select species with different m/{mu} ratios, e.g., the conformers of neutral molecules [Phys. Rev. Lett. 100, 133003 (2008)]. Here we demonstrate both theoretically and experimentally how the resolution of such an m/{mu} selector can be optimized.
- Published
- 2010
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