Near Edge X-Ray Absorption Fine Structure Spectroscopy In Materials Analysis

Roger Carr

doi:10.1117/12.936596

12 August 1986 Near Edge X-Ray Absorption Fine Structure Spectroscopy In Materials Analysis

Roger Carr

Proceedings Volume 0690, X-Rays in Materials Analysis: Novel Applications and Recent Developments; (1986) https://doi.org/10.1117/12.936596
Event: 30th Annual Technical Symposium, 1986, San Diego, United States

Abstract

Near Edge X-ray Absorption Fine Structure (NEXAFS) Spectroscopy is a recently developed tool which is used to determine angular orientation and bond lengths of small molecules which adsorbed onto surfaces. Polarized soft x-rays from a synchrotron radiation source cause electronic transitions from core levels into unfilled molecular orbitals near the vacuum level. Many small molecules have unfilled it and a symmetry orbitals, and dipole selection rules cause these transitions to be highly polarization dependent. By rotating the sample with respect to the photon beam, one observes this polarization dependence, and from this the angular orientations of the chemical bonds are inferred. The technique is less model dependent than conventional techniques such as LEED and HREELS, and has been used to determine a number of orientations with confidence. The spectra also yield information about the lengths of the bonds from which structural models may be constructed for the surface + adsorbate system.

Citation Download Citation

Roger Carr "Near Edge X-Ray Absorption Fine Structure Spectroscopy In Materials Analysis", Proc. SPIE 0690, X-Rays in Materials Analysis: Novel Applications and Recent Developments, (12 August 1986); https://doi.org/10.1117/12.936596

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