Abstract
Positron annihilation measurements were performed in austenitic Fe59Ni25Cr16 alloy containing vacancy-type defects. Lifetime data were recorded between 4K and 400K. The positron trapping process was studied as a function of temperature and cluster size. The smaller defects characterized by a lifetime of 260 ps yield an unchanged trapping rate during temperature scanning. However, the trapping phenomenon is strongly temperature dependent for the larger size defects, with a typical lifetime of 500 ps.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
R.N. West: InPositrons in Solids, ed. by P. Hautojärvi, Topics Curr. Phys.12 (Springer, Berlin, Heidelberg 1979) p. 89
R.M. Nieminen, M.J. Manninen: InPositrons in Solids, ed by P. Hautojärvi, Topics Curr. Phys.12 (Springer, Berlin, Heidelberg 1979) p. 145
R.M. Nieminen, J. Laakkonen, P. Hautojärvi, A. Vehanen: Phys. Rev. B19, 1397 (1979)
S. Linderoth, C. Hidalgo: Phys. Rev. B36, 4054 (1987)
L.C. Smedskjaer, M. Manninen, M.J. Fluss: J. Phys. F10, 2237 (1980)
M. Manninen, R.M. Nieminen: Appl. Phys. A26, 93 (1983)
S. Mantl, W. Kesternich, W. Triftshäuser: J. Nucl. Mater.69, 70, 593 (1978)
D. Huguenin, C. Corbel, P. Moser, F. Vanoni: InPositron Annihilation (World-Scientific, Singapore) ICPA-8 Gent, 29 Aug.–3 Sept. 1988, in press
P. Hautojärvi, J. Heiniö, M. Manninen, R. Nieminen: Philos. Mag.35, 973 (1977)
P. Hautojärvi: Mater. Sci. Forum15–18, 81 (1987)
A. Vehanen, P. Hautojärvi, J. Johansson, J. Yli-Kauppila, P. Moser: Phys. Rev. B25, 762 (1982)
B. Pagh, H.E. Hansen, B. Nielsen, G. Trumpy, K. Petersen: Appl. Phys. A33, 255–263 (1984)