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2 Nukleonika

2 2004

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The influence of defect structure on the surface sputtering of metals under irradiation of swift heavy ion in the inelastic energy loss region

Cheblukov Y., Didyk A., Hofman A., Semina V., Starosta W.

Nukleonika

2004

Vol. 49, nr 1

15-21

The results of the influence of heavy ion irradiation in the inelastic energy loss region on the structure of some metals such as nickel, single crystal tungsten, chromium-nickel stainless steel and cold-deformed gold are presented. It was shown that the sputtering (evaporation) yield strongly depends on the density of defects in these metals. The sputtering yield starts to grow strongly with the increase of damages created by elastic and inelastic energy heavy ion losses. The stainless steel surface structure behaved differently under irradiation than the pure metal surface structure.

On the nature of changes in the optical characterization produced in sapphire on its irradiation with a pulsed powerful stream of hydrogen ions

Gribkov V., Ivanov L., Maslyaev S., Pimenov V., Sadowski M., Skladnik-Sadowska E., Banaszak A., Kopeć G., Cheblukov Y., Kozodaev M. A., Suvorov A. L., Smirnov I. S.

Nukleonika

2004

Vol. 49, nr 2

43-49

Changes in the optical characteristics in synthetic sapphire specimens produced by microsecond pulse irradiation with a stream of hydrogen ions of energies ranging up to tens keV have been observed. Data on decrease in the optical reflection, measured within the wavelength range of 200 900 nm, are presented. This characterization is compared with the data received by optical and atomic force microscopy as well as by lattice structure analysis performed with X-rays. The measurements indicate that the changes of optical parameters are not a consequence of absorption increase and/or sapphire decomposition. They result from modifications of the morphology and structure of surface layer of the sapphire samples, induced by irradiation.