Hostname: page-component-78c5997874-m6dg7 Total loading time: 0 Render date: 2024-11-06T05:05:37.080Z Has data issue: false hasContentIssue false
  • English
  • Français

High-Resolution Core-Level Photoabsorption of Alkali Halides

Published online by Cambridge University Press:  15 February 2011

E. Hudson ,
E. Moler ,
Y. Zheng ,
S. Kellar ,
P. Heimann ,
Z. Hussain  and
D. A. Shirley
E. Hudson
Affiliation:
Chemical Sciences Division, Lawrence Berkeley Laboratory, Berkeley, CA 94720
E. Moler
Affiliation:
Chemical Sciences Division, Lawrence Berkeley Laboratory, Berkeley, CA 94720
Y. Zheng
Affiliation:
Chemical Sciences Division, Lawrence Berkeley Laboratory, Berkeley, CA 94720 Departments of Chemistry and Physics, Pennsylvania State University, University Park PA 16802
S. Kellar
Affiliation:
Chemical Sciences Division, Lawrence Berkeley Laboratory, Berkeley, CA 94720
P. Heimann
Affiliation:
Accelerator and Fusion Research Division, Lawrence Berkeley Laboratory, Berkeley CA 94720
Z. Hussain
Affiliation:
Accelerator and Fusion Research Division, Lawrence Berkeley Laboratory, Berkeley CA 94720
D. A. Shirley
Affiliation:
Departments of Chemistry and Physics, Pennsylvania State University, University Park PA 16802
Get access

Abstract

The X-ray Absorption Near Edge Structure (XANES) of single-crystal alkali halide salts have been measured at low temperature (T≈80 K). By employing the electron partial-yield detection technique, spectra of NaF, NaCI, and NaBr were obtained near the sodium K-edge and spectra of LiF, NaF, and KF were obtained near the fluorine K-edge. All spectra showed sharp features at the absorption threshold and broader absorption features extending 50–80 eV above threshold. The high energy resolution of the soft X-rays (ΔE/E ≈ 4000) allowed the detection of previously unobserved fine structure, particularly in the near-edge region. The narrow features below and just above threshold are attributed to core-level excitons. The intense, broader peaks further above threshold are assigned to single-electron scattering resonances. An ab initio multiple-scattering calculation is used to model the latter effect. Contributions from atomic multielectron excitations, estimated by a comparison to the K-edge photoabsorption spectrum of Ne in the gas phase, are found to be very small.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 307: Symposium L – Applications of Synchrotron Radiation Techniques to Materials Science , 1993 , 83
Copyright
Copyright © Materials Research Society 1993

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Rehr, J. J., Leon, J. Mustre de, Zabinsky, S. I., and Albers, R. C., J. Am. Chem. Soc. 113, 5135 (1991).Google Scholar
2. Rehr, J. J., Albers, R. C., and Zabinsky, S. I., Phys. Rev. Lett. 69, 3397 (1992).CrossRefGoogle Scholar
3. Fujikawa, T., Okazawa, T., Yamasaki, K., Tang, I., Murata, T., Matsukawa, T., and Naoé, S., J. Phys. Soc. Jpn. 58, 2952 (1989).Google Scholar
4. Murata, T., Matsukawa, T., and Naoé, S., Solid State Commun. 66, 787 (1988).Google Scholar
5. Nakai, S., Ohashi, M., Mitsuishi, T., Maezawa, H., Oizumi, H., and Fujikawa, T., J. Phys. Soc. Jpn. 55, 2436 (1986).Google Scholar
6. Pantelides, S., Phys. Rev. B 11, 2391 (1975).Google Scholar
7. Gegusin, I. I., Datsyuk, V. N., Novakovich, A. A., Bugaev, L. A., and Vedrinskii, R. V., Phys. Stat. Sol. (b) 134, 641 (1986).Google Scholar
8. Domke, M., Mandel, T., Puschmann, A., Xue, C., Shirley, D. A., Kaindl, G., Petersen, H., and Kuske, P., Rev. Sci. Instrum. 63, 80 (1992).Google Scholar
9. Schwarz, W. H. E., Angew. Chem. Intemat. Edit. 13, 454 (1974); J. St6hr and R. Jeager, Phys. Rev. B 26, 4111 (1982).Google Scholar
10. Tosi, M. P., Solid State Phys. 16, 1 (1964).Google Scholar
11. Lewis, J. T., Lehoczky, A., and Briscoe, C. V., Phys. Rev. 161, 877 (1967).Google Scholar