A compact and highly collimated atomic/molecular beam source

Autor:	Bhardwaj, Geetika, Singh, Saurabh Kumar, Shirhatti, Pranav R.
Rok vydání:	2023
Předmět:	Physics - Chemical Physics Physics - Applied Physics Physics - Atomic Physics Physics - Instrumentation and Detectors
Zdroj:	Review of Scientific Instruments 94, 043305 (2023)
Druh dokumentu:	Working Paper
DOI:	10.1063/5.0145956
Popis:	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 travelling 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 specular reflectivity of the Helium beam generated using this source. Comment: 7 pages, 5 figures, supplementary information (1 figure)
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2301.13407 Zobrazit plný text záznamu View this record from Arxiv