A. Kitamura et al., SIMULATION OF ERD SPECTRA FOR A SURFACE WITH A PERIODIC ROUGHNESS, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 134(1), 1998, pp. 98-106
Citations number
16
Categorie Soggetti
Instument & Instrumentation","Nuclear Sciences & Tecnology","Physics, Atomic, Molecular & Chemical
For the purpose of identifying hydrogen isotope distribution in a micr
oscopically rough surface, the geometrical effect on elastic recoil de
tection (ERD) spectra is examined using an optical grating base coated
with a thin film of deuterated polyethylene (CD2). It is shown that t
he ERD spectra from such surfaces with a periodic roughness agree well
with the simulation spectra using the roughness parameters determined
by the simultaneous Rutherford backscattering spectroscopy (RBS) quan
tification of the roughness, the ''Pb coating-RBS method''. The micros
copic structure of the sample surface is reflected well in the spectra
l shape. This means that the true distribution of the hydrogen isotope
s in a sample could be determined by correcting the ERD spectra for th
e roughness. Potential applicability of the present method, Pb coating
of the sample followed by simultaneous RBS-ERD analysis, to correctio
n of ERD spectra for the surface roughness is thus demonstrated. (C) 1
998 Elsevier Science B.V.