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Tracking latent domain structures: An integration of pathfinder and Latent Semantic Analysis
AI & Society, 1997Standard psychological scaling methods have been widely used as knowledge elicitation tools to uncover structural characteristics of a given domain. However, these methods traditionally rely on relatedness ratings from human experts, which is often time-consuming and tedious.
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ON THE FORMATION OF HEAVY ION LATENT TRACKS IN POLYMERIC DETECTORS
Radiation Effects, 1977ABSTRACT Three kinds of polymeric track detectors have been examined by ESR spectroscopy following heavy ion or energetic electron bombardments: 1 Typical nuclear track detectors: makrofol, kapton, terphane; 2 Polymers whose radiolysis under γ-rays or electron beams is well established: PMMA, PE, PP; 3 Polymers in which etchable tracks ...
A. Chambaudet, A. Bernas, J. Roncin
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Formation of amorphous latent tracks in mica
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1996Abstract There are controversial experimental data on latent track sizes in mica bombarded by energetic ions in the electronic stopping regime. Recent measurements by wide angle X-ray diffraction [1] and atomic force microscopy (AMF) with lateral scanning [2] provided intermediate values between previous AMF [3] and small angle neutron scattering ...
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On latent track formation in organic nuclear charged particle track detectors
Radiation Effects, 1970In recent years, in a number of laboratories throughout the world, a considerable amount of effort has gone into the development and the understanding of organic nuclear charged particle track detectors. Even in their developmental stage these detectors have found numerous applications in several scientific fields.
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Doping of latent tracks in polyethylene by iodine diffusion
Radiation Measurements, 1995Abstract Anomalous iodine diffusion was observed on polyethylene implanted with 150 keV F + and As + ions (1×10 11 −1×10 15 cm −2 ) and exposed to iodine vapours at 90°C.
V Hnatowicz +8 more
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On the mechanism of the formation of latent tracks in dielectric solids
Radiation Measurements, 1997Abstract In the late 1950s the ion explosion spike made its appearance as a simple concept used to explain the formation of continuous linear tracks of lattice damage in insulators by a process of ionisation caused by the passage of a fission fragment. There was a serious problem with the lifetimes of holes and electrons in conduction states.
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Tailoring of the properties of ferrites by latent track production
Materials Science and Engineering: A, 1998Abstract Over the past 20 years, researchers have endeavored to tailor the magnetic and magneto-optical properties of ferrites by ion irradiations in view of high-density data recording. High-energy heavy ion irradiations of such magnetic insulators provide a unique way to generate reproducible random composites of ferrimagnetic crystal and ...
J.M. Costantini +2 more
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Orientation of molecular probes in latent ion tracks
Radiation Effects and Defects in Solids, 2000Abstract By using polarized fluorescence spectroscopy, the orientation properties of special molecular probes deposited in the ion tracks were investigated. Foils of poly(ethylene terephthalate) (PET) were used as a matrix for the ion tracks wherein fluorescence probes such as aminostyryl-derivatives can be incorporated using a suitable solvent e.g. N,
M. Eßer, J. Fuhrmann
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Characterization of aged latent ion tracks in polyimide
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1996Abstract It is known since some time that irradiated polymers, exposed to ambient atmosphere, show gradual changes in their overall properties. These changes can largely be attributed to reactions with indiffusing oxygen and/or water vapor, eventually assisted by the photochemical action of light.
D. Fink +10 more
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Analysis of the evolution of latent tracks in polyvinylidene fluoride
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1999Abstract Latent tracks induced by swift heavy ions in polyvinylidene fluoride (PVDF) are analyzed using the experimental results from publications on small angle X-ray scattering, X-ray diffraction and piezoelectricity. The thermal spike model provides a correct analytical description of the track evolution above a threshold electronic stopping power
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