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Related Experiment Video

Updated: May 24, 2025

Cryogenic Liquid Jets for High Repetition Rate Discovery Science

Cryogenic Liquid Jets for High Repetition Rate Discovery Science

Published on: May 9, 2020

Minimizing interference in low-pressure supersonic beam sources.

Jack Kelsall¹, Aleksandar Radić¹, John Ellis¹

¹Cavendish Laboratory, Department of Physics, University of Cambridge, JJ Thomson Avenue, Cambridge, United Kingdom.

The Journal of Chemical Physics

|March 4, 2025

Summary

This summary is machine-generated.

A new theory models neutral particle beams from free-jet sources. It simplifies design and minimizes interference, offering recommendations for cryogenic beams.

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Published on: August 12, 2013

Area of Science:

Physics
Physical Chemistry
Materials Science

Background:

Free-jet sources produce neutral particle beams for diverse applications.
Existing theories for these sources are complex and parameter-dependent.

Purpose of the Study:

To develop a simple analytical theory for free-jet atomic, cluster, and molecular sources.
To provide design recommendations for minimizing skimmer interference, especially for cryogenic beams.

Main Methods:

Developed a simple analytical theory for free-jet sources under specific flow conditions.
Compared theoretical calculations with experimental data to validate the model.

Main Results:

The theory accurately models neutral particle beams from free-jet sources.
Skimmer interference is found to be negligible compared to background gas attenuation for room-temperature beams.
The model provides a parameter-free treatment, simplifying analysis.

Conclusions:

The developed theory offers a straightforward approach to understanding and optimizing free-jet sources.
Design recommendations are provided to minimize interference in cryogenic-temperature beam applications.