Full Content is available to subscribers

Subscribe/Learn More  >
Proceedings Article

X-ray natural circular dichroism (XNCD) in gyrotropic crystals

[+] Author Affiliations
Jose Goulon, Andrei Rogalev, Gisele Benayoun

European Synchrotron Radiation Facility (France)

Chantal Goulon-Ginet

European Synchrotron Radiation Facility and Univ. Joseph Fourier (France)

Cecile Malgrange, Christian Brouder

Univ. de Paris VI and Univ. de Paris VII (France)

Proc. SPIE 3773, X-Ray Optics Design, Performance, and Applications, 316 (November 16, 1999); doi:10.1117/12.370104
Text Size: A A A
From Conference Volume 3773

  • X-Ray Optics Design, Performance, and Applications
  • Ali M. Khounsary; Andreas K. Freund; Tetsuya Ishikawa; George Srajer; Jonathan C. Lang
  • Denver, CO | July 18, 1999

abstract

We have produced recently the very first experimental evidence that X-ray Natural Circular Dichroism (XNCD) can be detected in both uniaxial and biaxial gyrotropic single crystals. XNCD signals are to be assigned to electric dipole-electric quadrupole E1.E2 interference terms which can be quite significant in the X-ray range whereas there can hardly be any detectable contribution of the electric dipole-magnetic dipole E1.M1 terms which dominate CD at optical wavelengths. For heavily absorbing single crystals, the differential absorption between left-handed and right-handed circularly polarized X- ray photons cannot be measured in transmission but circular dichroism can still be detected in fluorescence excitation spectra. XNCD and Fluorescence detected X-ray Natural Circular Dichroism (Fd-XNCD) spectra are strictly identical for uniaxial crystals such a lithium iodate ((alpha) -LiIO3) but this is only true to the first order for biaxial crystals such as potassium titanyl phosphate (KTP). Such difficult experiments became feasible only with the development of powerful helical undulator sources and with a careful optimization of all components of the beamline.

© (1999) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Jose Goulon ; Chantal Goulon-Ginet ; Andrei Rogalev ; Gisele Benayoun ; Cecile Malgrange, et al.
"X-ray natural circular dichroism (XNCD) in gyrotropic crystals", Proc. SPIE 3773, X-Ray Optics Design, Performance, and Applications, 316 (November 16, 1999); doi:10.1117/12.370104; http://dx.doi.org/10.1117/12.370104


Access This Proceeding
Sign in or Create a personal account to Buy this proceeding ($15 for members, $18 for non-members).

Figures

Tables

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

Advertisement


  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Proceeding
Sign in or Create a personal account to Buy this proceeding ($15 for members, $18 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.