Scanning tunneling microscopy studies of thin foil x-ray mirrors

Finn Erland Christensen; Flemming Besenbacher; Jorgen Garnaes; Erik Laegsgaard; I. Stensgaard

doi:10.1117/12.55645

1 June 1990 Scanning tunneling microscopy studies of thin foil x-ray mirrors

Finn Erland Christensen, Flemming Besenbacher, Jorgen Garnaes, Erik Laegsgaard, I. Stensgaard

Author Affiliations +

Optical Engineering, Vol. 29, Issue 6, (June 1990). https://doi.org/10.1117/12.55645

Abstract

In this paper scanning tunneling microscopy (STM) measurements of x-ray mirrors are presented. The x-ray mirrors are 0.3 mm thick dip-lacquered aluminum foils coated with gold by evaporation, as well as state-of-the-art polished surfaces coated with gold, platinum, or iridium. The measurements reveal that the surfaces consist of islands with different topographic features. The microroughness is found to be in the range from 7 to 15 Å, and the characteristic length scale for this microroughness is estimated to be between 0.03 and 0.06 |xm. For the thin foil mirrors it is found that the microroughness depends on the thickness of the gold layer. The roughness is smallest (~ 7 to 9 Å) for gold layers between ~ 100 and ~ 250 Å, and it becomes significantly greater (~10 to 15 Å) for gold layers thicker than ~ 350 Å. With a few exceptions the STM measurements agree well with recent x-ray studies. The results can be used as a guide when selecting the best coating process in the production of x-ray mirrors.

Citation Download Citation

Finn Erland Christensen, Flemming Besenbacher, Jorgen Garnaes, Erik Laegsgaard, and I. Stensgaard "Scanning tunneling microscopy studies of thin foil x-ray mirrors," Optical Engineering 29(6), (1 June 1990). https://doi.org/10.1117/12.55645

Published: 1 June 1990

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available