Note: High density pulsed molecular beam for cold ion chemistry

A recent expansion of cold and ultracold molecule applications has led to renewed focus on molecular species preparation under ultrahigh vacuum conditions. Meanwhile, molecular beams have been used to study gas phase chemical reactions for decades. In this paper, we describe an apparatus that uses p...

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Bibliographic Details
Published in:Review of scientific instruments 2014-08, Vol.85 (8), p.086111-086111
Main Authors: Kokish, M G, Rajagopal, V, Marler, J P, Odom, B C
Format: Article
Language:English
Subjects:
CHEMICAL REACTIONS
CHEMISTRY
Cold traps
DENSITY
EXCITATION
GASES
INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
IONS
MOLECULAR BEAMS
Organic chemistry
PRESSURE RANGE NANO PA
PULSES
REACTION KINETICS
Scientific apparatus & instruments
TRAPPING
Ultrahigh vacuum
Vapor phases
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Summary:A recent expansion of cold and ultracold molecule applications has led to renewed focus on molecular species preparation under ultrahigh vacuum conditions. Meanwhile, molecular beams have been used to study gas phase chemical reactions for decades. In this paper, we describe an apparatus that uses pulsed molecular beam technology to achieve high local gas densities, leading to faster reaction rates with cold trapped ions. We characterize the beam's spatial profile using the trapped ions themselves. This apparatus could be used for preparation of molecular species by reactions requiring excitation of trapped ion precursors to states with short lifetimes or for obtaining a high reaction rate with minimal increase of background chamber pressure.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.4894262