Effect of sputtering with ions on field emission from different metallic surfaces
by Süleyman Soykarcı; Pavel Serbun; Yahya Öz; Dirk Lützenkirchen-Hecht
International Journal of Surface Science and Engineering (IJSURFSE), Vol. 16, No. 2, 2022

Abstract: The main field limitations of modern particle accelerators play an important role in various studies. One of the most important limitations is the enhanced field emission (EFE) having a parasitic effect on the quality of accelerators. Many studies concentrate on different methods for improving the surface quality of cavity metals which is correlated to the beforementioned effect. This manuscript considers a different approach by ion irradiation. Systematic analyses of the surfaces and the EFE from polycrystalline copper (Cu) and large grain niobium (Nb) before and after argon-ion (Ar⁺) irradiation are performed. Results show that the suppression of the EFE might be achievable with this strategy which might yield an enhanced performance of particle accelerators that use normally conductive structures since the surface roughness R_a of Cu samples drops from 35-107 nm to 3-4 nm in some crystal grains which improves the surface quality significantly. Remarkably, this effect depends on the crystal orientation and an EFE-enhancing effect can also be observed for some grains which might be useful for varying engineering applications.

Online publication date: Fri, 08-Jul-2022

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Surface Science and Engineering (IJSURFSE):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com