Bremsstrahlung Isochromat Study of Si(111) by 6.2 eV Photons

• Authors: L. Sobczak , G.M. Guichar , R. Hamdache , C. Sebenne
• Languages of publication: EN

Abstracts

EN

We present the first experimental bremsstraldung isochromats at an extremal low photon energy of 6.2 eV measured by using a grating spectrometer placed in the air outside the ultra-high-vacuum chamber. Isochromats of the Si(111) cleaved surface have been measured for normal incidence of electrons. We have found that a free electron approximation for the initial electron state is quite good for the interpretation of bulk interband traηsitions occurring in the 6.2 eV isochromat of Si(111). A strong sensitivity for surface roughness of the 6.2 eV isochromat is observed.

Keywords

EN

71.25.Rk; 73.20.At

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1991
• Volume: 79
• Issue: 5
• Pages: 745-750

Dates

published

1991-05

received

1991-03-19

Contributors

author

L. Sobczak

• Laboratoire de Physique des Solides, Associé au CNRS 154, Université Pierre et Marie Curie, 75252 Paris, France

author

G.M. Guichar

• Laboratoire de Physique des Solides, Associé au CNRS 154, Université Pierre et Marie Curie, 75252 Paris, France

author

R. Hamdache

• Laboratoire de Physique des Solides, Associé au CNRS 154, Université Pierre et Marie Curie, 75252 Paris, France

author

C. Sebenne

• Laboratoire de Physique des Solides, Associé au CNRS 154, Université Pierre et Marie Curie, 75252 Paris, France