Results 181 to 190 of about 31,488 (214)

Studies of Dislocation Formation in Annealed Self-Ion Irradiated Silicon

MRS Proceedings, 1993
ABSTRACTVariable energy positron annihilation and Rutherford backscattering spectroscopy have been used to investigate the evolution of secondary defects during the annealing of self-ion irradiated silicon. Evidence supporting the existence of both vacancy- and interstitially-based defects after high temperature anneals is presented.
R. D. Goldberg, T. W. Simpson, I. V. Mitchell, P. J. Schultz.   +3 more
openaire   +1 more source

Cascade damage formation in gold under self-ion irradiation

Journal of Nuclear Materials, 1994
Abstract To understand cascade damage formation as a function of primary recoil energy, thin foils of gold were irradiated with 20–400 keV self-ions to a fluence of 1.0 × 10 14 ions/m 2 at 300 K. The yield of groups of vacancy clusters per irradiated ion saturated at an ion energy higher than 100 keV.
N. Sekimura, Y. Kanzaki, S.R. Okada, T. Masuda, S. Ishino   +4 more
openaire   +1 more source

Formation of dislocation loops in iron by self-ion irradiations at 40K

Scripta Metallurgica, 1984
This letter reports on the first observation of dislocation loops formed in iron by bombardment with self-ions. The irradiations were performed with 50 and 100 keV self-ions to maximum ion doses of 8 x 10/sup 13/ ions cm/sup -2/ in-situ in the High-Voltage Electron Microscope (HVEM) - Tandem accelerator facility at Argonne National Labs.
I.M Robertson, M.A Kirk, Wayne E King
openaire   +1 more source

Crater formation in gold nanoislands due to MeV self-ion irradiation

Journal of Applied Physics, 2003
The modification of gold nanoislands, grown on silicon substrates under high-vacuum conditions, by MeV self-ion irradiation has been studied by using scanning electron microscopy, transmission electron microscopy, atomic force microscopy, and x-ray reflectivity.
P. V. Satyam, J. Kamila, S. Mohapatra, B. Satpati, D. K. Goswami, B. N. Dev, R. E. Cook, Lahsen Assoufid, J. Wang, N. C. Mishra   +9 more
openaire   +1 more source

Depth dependent void swelling rates in self-ion irradiated nickel

Journal of Nuclear Materials, 1979
Abstract Specimens of high purity nickel were irradiated with high energy heavy ions and the resultant microstructure examined along the ion path using a cross sectioning sample preparation technique. Void nucleation was found to be very sensitive to hydrogen introduced into the samples by electropolishing prior to irradiation.
J.B. Whitley, G.L. Kulcinski, P. Wilkes, J. Billen   +3 more
openaire   +1 more source

New model for damage accumulation in Si during self-ion irradiation

Applied Physics Letters, 1989
The dependence of the damage produced by self-ion implantation in Si on dose is determined and is shown to exhibit two distinct behaviors: an initial sublinear increase of damage with dose, followed by a period of greatly accelerated growth. Ion backscattering analysis using both single- and double-alignment channeling measurements is used to determine
O. W. Holland, S. J. Pennycook, Gerald L. Albert   +2 more
openaire   +1 more source

Precipitate behavior in self-ion irradiated stainless steels at high doses

Journal of Nuclear Materials, 2014
Abstract To study radiation-induced precipitation at high doses, solution annealed 304L SS and cold worked 316 SS were irradiated to 46 and 260 dpa at 380 °C using 5 MeV Fe ++ and the radiation-induced precipitates were examined using atom probe tomography. Ni/Si-rich clusters were observed in all examined conditions.
Z. Jiao, G.S. Was
openaire   +1 more source

Stability of SPPs in Zirconium Alloy CZ2 Under Self-Ion Irradiation

Volume 3: Nuclear Fuel and Material, Reactor Physics and Transport Theory; Innovative Nuclear Power Plant Design and New Technology Application, 2017
Zr-Nb zirconium alloy was developed at CNPRI and designated as CZ2. In this paper, the composition, size distribution and crystal structure of second phase particles (SPPs) in CZ2 have been analyzed under transmission electron microscopy (TEM). Two types of SPPs were observed in CZ2, which are bcc β-Nb and hcp Zr-Nb-Fe.
Xu Wang, Jun Tan, Liutao Chen, Hong Zou, Dungu Wen, Yang Xu, Changyuan Gao, Yongjun Deng, Yuemin Zhou, Lumin Wang   +9 more
openaire   +1 more source

Effects of temperature and helium on void formation in self-ion irradiated aluminum

Journal of Nuclear Materials, 1983
Abstract High-purity aluminum was irradiated with 9 MeV aluminum ions at several temperatures in the range 25–125°C, both with and without pre-injected helium. The aluminum ion irradiation doses ranged from 0.2 to 20 dpa. Void swelling in the temperature range studied was found to occur only when the aluminum contains helium gas, and as little as 0.1
S.K. McLaurin, G.L. Kulcinski, R.A. Dodd
openaire   +1 more source

Simulation of neutron-induced damage in tungsten by irradiation with energetic self-ions

Journal of Nuclear Materials, 2015
Abstract A direct comparison of the deuterium (D) decoration of radiation-induced damage in polycrystalline tungsten irradiated with self-ions [present work] and neutrons in the high-flux isotope reactor (HFIR) (Hatano et al., 2013) shows a reasonably good agreement at least up to 0.3 displacement per atom indicating that MeV heavy ions can be a good
Ogorodnikova, O., Gann, V.
openaire   +2 more sources