Device and method for preparing large number of cold molecular ions

Abstract

The invention relates to a device and method for preparing a large number of cold molecular ions, and belongs to the technical field of cold molecular ion preparation. The device integrates a magneto-optical trap for cooling and trapping neutral atoms and a linear Paul trap for trapping ions, the center of the magneto-optical trap coincides with the center of an ion trap to ensure that the center of ion cloud coincides with the center of atom cloud, and meanwhile, a micro-channel plate is used as a detection device of the ion time-of-flight mass spectrometry. According to the method, a large number of cold atoms are prepared in the magneto-optical trap through laser cooling, then a large number of ions are generated through continuous photo ionization of the cold atoms, the ions collide with the cold atoms to generate cold molecular ions, the cold molecular ions are trapped by the ion trap, then a large number of cold molecular ions are obtained, and finally clear and distinguishable molecular ion signals are obtained through the ion time-of-flight mass spectrometry. The problem that cold molecule ions are difficult to prepare and discriminate is solved.

Description

technical field [0001] The invention belongs to the technical field of cold molecular ion preparation, and in particular relates to a device and method for preparing a large amount of cold molecular ions. Background technique [0002] Cold molecular ions trapped in space have the characteristics of spatial localization, long-term storage, and easier control of charged particles. Quantum simulation and other aspects have very great application prospects. At present, there are three experimental schemes for the preparation of space-trapped cold molecular ions, and their techniques and defects are as follows: [0003] 1. Two-body collision of ions and cold atoms in the Coulomb crystal produces molecular ions: In the hybrid trap system, the ions trapped in the ion trap are cooled by laser to form a Coulomb crystal, which collides with cold atoms / ultracold atoms in the atomic trap to produce molecules ion. The disadvantages are: ① forming Coulomb crystals requires the introduc...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the defects existing in the prior art, the object of the present invention is to provide a method and device for preparing a large number of cold molecular ions, and solve the problem of difficult preparation and screening of cold molecular ions

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