Proceedings of the 9th International Conference on X-Ray Absorption Fine Structure

J. Phys. IV France 7 (1997) C2-541-C2-542
DOI: 10.1051/jp4/1997091

Photon Stimulated D⁺ Desorption from Selectively Deuterated Polystyrene by Inner Shell Excitation

K.K. Okudaira¹, S. Yamamoto¹, N. Ueno¹, Y. Harada¹, M. Aoki², K. Fujii³, T. Sekitani³, K. Tanaka³, M. Imamura⁴, N. Matsubayashi⁴, H. Shimada⁴ and M. Rei Vila<sup>5

1</sup>  Department of Materials Science, Chiba University, Inage-ku, Chiba263, Japan
²  Graduate School of Arts and Sciences, The University of Tokyo, Komaba, Meguro, Tokyo 153, Japan
³  Department of Materials Science, Hiroshima University, Higashi-Hiroshima 724, Japan
⁴  National Institute of Materials and Chemical Research, Higashi, Tsukuba, Ibaraki 305, Japan
⁵  LASIR-CNRS, 2 rue Henri Dunant, 94320 Thiais, France

Abstract
The ion desorption by carbon Is electron excitation was studied for thin films of selectively deuterated polystyrene ([-CD₂-CD(C₆H₅)-]n, [-CH₂-CH(C₆D₅)-]n, and [-CD₂-CD(C₆D₅-]n ) using the ion time-of-flight method with monochromatic synchrotron radiation pulses. By comparing the photon energy dependence of partial ion yields (PIYs) of D⁺ of these polymers, it was found that the observed D⁺ originates mainly from the pendant phenyl group. Further we found that PIY spectra of D⁺ are useful in discussing the origin of the absorption features by comparing with the total electron yield.

© EDP Sciences 1997