Results 261 to 270 of about 116,364 (295)

Optical anisotropy in ion-beam irradiated fibres

Journal of Physics D: Applied Physics, 1988
Multiple-beam interferometric methods of the Fizeau-type in transmission and on reflection were utilised for the determination of the effect of ion-beam irradiation on the refractive indices and birefringence of Dralon fibres. Nitrogen gas was used to produce a continuous ion-beam current density of N2+ ions equal to 100 mu A cm-2 at a reduced pressure
A A Hamza, A M Ghander, A H Oraby, M A Mabrouk   +3 more
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Eutectic melting by pulsed ion beam irradiation

Applied Physics Letters, 1985
Interfacial melting at near eutectic compositions has been observed for three metal-silicon systems using pulsed ion beam irradiation. In all cases (Ni/Si, Co/Si, and Pt/Si), the reaction occurred below the melting temperature of either the deposited metal layer or the silicon substrate.
R. Fastow, J. W. Mayer, T. Brat, M. Eizenberg, J. O. Olowolafe   +4 more
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ESR investigation of ion beam irradiated polyethylene

Polymer Degradation and Stability, 1994
Abstract Electron spin resonance (ESR) investigations of polyethylene, irradiated with accelerated sulphur ions, are reported. The temperature dependence of resonance line parameters in the range 20–260°C, has been studied. Additional ESR data on polyethylene irradiated with neutrons as well as on polyethylene thermally degraded in air are presented.
M.I. Chiparǎ, A. Ifrim, V.V. Grecu, M.I. Toacsǎn, N. Popescu-Pogrion, A. Ionescu, M.D. Chipara, J. Reyes Romero   +7 more
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Spectroscopic investigations on ion beam irradiated polycarbonate

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2000
Abstract Luminescence investigations on polycarbonate irradiated with accelerated uranium ions are reported. The dependence of luminescence spectra on the penetration length, deposited energy and dose and track radius is investigated. The luminescence spectrum has been assigned to phenyls.
PUGLISI, Orazio Gaetano, M. CHIPARA, W. ENGE, COMPAGNINI, Giuseppe Romano, J. REYES ROMERO, U. BACMEISTER, M. D. CHIPARA   +6 more
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Luminescence in Li2O under ion beam irradiation

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1998
Abstract The luminescence emitted under light ion (H + , He + ) irradiation in Li 2 O single crystal has been measured at 313–773 K by an optical multi-channel detector. The temperature and absorbed dose dependences of the luminescence spectrum were investigated. The luminescence emission in Li 2 O induced by both H + and He + ion beam irradiations
Victor Grishmanov, Satoru Tanaka, Koji Ogikubo, Quanli Hu   +3 more
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Heat diffusion in heavy ion beam irradiation

X-Ray Spectrometry, 2019
For heavy ion beam irradiation in water, a model that simulates heat diffusion following measurement indicating heat diffusion is proposed as a first step. This heat is generated near the incident ion path. The model proposed here should be useful for ion‐beam cancer therapy as well as the analysis of this measurement.
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Crosslinking of polysilanes by ion beam irradiation

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1998
Poly(methyl phenyl silane), PMPSi, poly(biphenyl methyl silane), PBMSi, poly(c-hexyl methyl silane), PcHexMSi, and poly(methyl n-hexyl silane), PMnHexSi, were irradiated in the absence of air with 300 MeV 86Kr14+, 200 MeV 129Xe14+ and 120 MeV 20Ne5+ ions. PMPSi was also irradiated with 65 MeV 15N3+ and 95 MeV 40Ar5+ ions.
V Herden, S Klaumünzer, W Schnabel
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Nitrogen Ion Beam Irradiation on Amorphous Carbon

Materials Science Forum, 2007
Both bulk and thin film amorphous carbon were irradiated using a nitrogen ion beam and changes in surface roughness and composition after ion beam irradiation have been studied. Amorphous carbon thin films were prepared from toluene vapor using plasma enhanced chemical vapor deposition. Ion irradiation was performed at room temperature using a nitrogen
Yoshihisa Watanabe, Masami Aono, Nobuaki Kitazawa   +2 more
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Ion beam irradiation in La2Zr2O7–Ce2Zr2O7 pyrochlore

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2004
Abstract Generally, zirconate pyrochlores do not experience a radiation-induced transformation from the crystalline-to-amorphous state, but rather disorder to a defect fluorite structure-type. Thus Gd2Zr2O7 has been proposed as a nuclear waste form for the immobilization of plutonium because of its radiation “stability”.
J. Lian, L.M. Wang, R.G. Haire, K.B. Helean, R.C. Ewing   +4 more
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Crystal-amorphous-silicon interface kinetics under ion beam irradiation

Applied Surface Science, 1990
Abstract Our recent work on ion-beam-assisted epitaxial growth of amorphous Si layers on single crystal substrates is reviewed. The crystallization was induced by a 600 keV Kr 2+ beam at a dose rate of 1×10 12 /cm 2 · s. During irradiations the samples were mounted on a resistively heated copper block whose temperature was maintained constant in ...
PRIOLO, Francesco, LAFERLA A, SPINELLA C, RIMINI E, CAMPISANO SU, FERLA G.   +5 more
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