Pulsed laser treatment of lead films on aluminium
作者:
AnimeshK. Jain,
V.N. Kulkarni,
K.B. Nambiar,
D.K. Sood,
S. C.L. Sharma,
P. Mazzoldi,
期刊:
Radiation Effects
(Taylor Available online 1982)
卷期:
Volume 63,
issue 1-4
页码: 175-181
ISSN:0033-7579
年代: 1982
DOI:10.1080/00337578208222836
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Lead films of thickness 100 Å, 250 Å. and 350 Å were vacuum deposited on AI and laser treated in air using single pulses (7 ns FWHM) from a Nd: glass laser operating in TEM00mode, at peak energy densities of 1.5-5.0 J/cm2. Rutherford back-scattering of 1.8 MeV He+ions was employed to determine the depth profiles of Pb in Al. Up to about 1.4 J/cm2, we observe only evaporation loss of Pb and formation of Pb-rich cells on the surface. At higher energies, liquid phase diffusion of Pb is observed up to 4 J/cm2, beyond which convection effects are seen. A quantitative analysis of data for 350 Å film at 3.0 J/cm2shows evidence of nonequilibrium segregation effects.
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