A compact and highly collimated atomic/molecular beam source

Author:

Bhardwaj Geetika1ORCID,Singh Saurabh Kumar1ORCID,Shirhatti Pranav R.1ORCID

Affiliation:

1. Tata Institute of Fundamental Research Hyderabad , 36/P Gopanpally, Hyderabad 500046, Telangana, India

Abstract

We describe the design, characterization, and application of a simple, highly collimated, and compact atomic/molecular beam source. This source is based on a segmented capillary design, constructed using a syringe needle. Angular width measurements and free molecular flow simulations show that the segmented structure effectively suppresses atoms traveling in off-axis directions, resulting in a narrow beam of Helium atoms having a width of 7 mrad (full width half maximum). We demonstrate an application of this source by using it for monitoring real-time changes in surface coverage on a clean Cu(110) surface exposed to oxygen by measuring the specular reflectivity of the Helium beam generated using this source.

Funder

Science and Engineering Research Board

Publisher

AIP Publishing

Subject

Instrumentation

Cited by 1 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. The curious case of CO2 dissociation on Cu(110);The Journal of Chemical Physics;2024-01-08

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