Results 251 to 260 of about 10,767 (296)

Theory for latent particle tracks in polymers

Nuclear Tracks and Radiation Measurements (1993), 1993
An atomistic model is developed which accounts for the rate of accumulation of ion-induced radiation damage in the form of latent nuclear tracks in polymers. The theory specifically applies for incident ion energies E ≥ Emax, where Emax is that energy corresponding to the peak in the electronic stopping power Se for the particular ion/target ...
Lewis T Chadderton, Salvador A Cruz
exaly   +2 more sources

TEM investigations of heavy ion latent tracks

Radiation Measurements, 1995
High resolution observations of GeS single crystals with a 400 keV transmission electron microscope (TEM) were carried out. The GeS was irradiated at the UNICAC with heavy ions at several MeV/u specific energy. The imaging of the tracks revealed relatively large amorphous cores of elliptical cross section, oriented with respect to the crystal lattice.
J Vetter
exaly   +2 more sources

Latent Tracks Do Exist in Metallic Materials

Europhysics Letters, 1991
Until now experiments have failed to show that latent tracks can be formed in metallic crystals. For the first time, discontinuous tracks have been observed in crystalline Ni-Zr alloys irradiated by GeV heavy ions. It is shown that their formation results from the very high value of the energy deposited in electronic excitations.
A Barbu, A Dunlop, R S Averback
exaly   +2 more sources

Topology-Constrained Layered Tracking with Latent Flow

2013 IEEE International Conference on Computer Vision, 2013
We present an integrated probabilistic model for layered object tracking that combines dynamics on implicit shape representations, topological shape constraints, adaptive appearance models, and layered flow. The generative model combines the evolution of appearances and layer shapes with a Gaussian process flow and explicit layer ordering.
Jason Chang 0001, John W. Fisher III
openaire   +1 more source

STM and AFM observations of latent tracks

Radiation Effects and Defects in Solids, 1993
(1993). STM and AFM observations of latent tracks. Radiation Effects and Defects in Solids: Vol. 126, No. 1-4, pp. 225-228.
S. Bouffard, J. Cousty, Y. Pennec, F. Thibaudau   +3 more
openaire   +1 more source

Investigation of latent tracks in polyethyleneterephthalate and their etching

Surface Science, 2002
Abstract The areas of radiation damage––latent tracks (LT) at the surface of polymer film (PET), irradiated with swift heavy ions of different types (Xe and Bi) were investigated by atomic-force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS).
A.I. Vilensky, D.L. Zagorski, S.A. Bystrov, S.S. Michailova, R.V. Gainutdinov, A.N. Nechaev   +5 more
openaire   +1 more source

Latent uncertainties of the precalculated track Monte Carlo method

Medical Physics, 2015
Purpose:While significant progress has been made in speeding up Monte Carlo (MC) dose calculation methods, they remain too time‐consuming for the purpose of inverse planning. To achieve clinically usable calculation speeds, a precalculated Monte Carlo (PMC) algorithm for proton and electron transport was developed to run on graphics processing units ...
Marc-André, Renaud, David, Roberge, Jan, Seuntjens   +2 more
openaire   +2 more sources

Predicting latent track dimensions

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1994
The increased use of columnar damage/latent tracks produced by MeV ions for scientific and technological applications provides ample justification for improving our understanding of the phenomenon. In this paper I give an overview of the systematics of tracks in several materials where the data are sufficiently extensive to make meaningful comparisons.
openaire   +2 more sources

Spatiotemporal latent semantic cues for moving people tracking

2009 IEEE International Conference on Acoustics, Speech and Signal Processing, 2009
Effective and robust visual tracking is one of the most important tasks for the intelligent visual surveillance. In this paper, we proposed a novel method for detecting and tracking moving people using the spatiotemporal latent semantic cues and the incremental eigenspace tracking techniques.
Peng Zhang 0005, Sabu Emmanuel, Pradeep K. Atrey, Mohan S. Kankanhalli   +3 more
openaire   +1 more source