LEED study of Ni (1 0 0) and (1 1 1) surface damage caused by Ar‘ ion bombardment with low energy and small doses
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Дата
2000-04
Автори
Vasylyev, Mykhaylo
Blaschuk, A.G.
Mashovets, Natalia
Vilkova, Natalia
Назва журналу
Номер ISSN
Назва тому
Видавець
Vacuum
Анотація
Surface damage formation on the Ni (1 0 0) and Ni (1 1 1) surfaces induced by Ar‘ ion bombardment at
low energy (0.1}1.2 keV) and small doses ((5]1015 ion/cm2) was studied with LEED. The degradation of
the di!raction spot intensities was measured directly during ion bombardment. Using the procedure of
Jacobson and Wehner for description of the exponential intensity/dose function, the mean area of damage
per incident ion was determined. The experimental results have con"rmed that partial annealing of the
surface damage takes place at room temperature during ion bombardment. An exponential relationship
observed between point defect concentration and annealing time at higher temperature indicated a "rst-
order reaction. The activation energies for Ni (1 0 0) and Ni (1 1 1) surfaces were determined. ( 2000
Elsevier Science Ltd. All rights reserved.
Опис
Ключові слова
surface defects, Ion bombardment, Nickel surface
Бібліографічний опис
LEED study of Ni (1 0 0) and (1 1 1) surface damage caused by Ar‘ ion bombardment with low energy and small doses / M. A. Vasylyev, A. G. Blaschuk, N. S. Mashovets, N. Yu. Vilkova // Vacuum. – 2000. – Vol. 57, iss. 1. – P. 71-80.