Results 261 to 270 of about 117,477 (313)
Some of the next articles are maybe not open access.
Ion Irradiation on Phase Change Materials
MRS Proceedings, 2011ABSTRACTIon irradiation with 130 keV Ge+ or 120 keV Sb+ has modified, by thermal spike effect, the local atomic arrangement in the structure of as-deposited sputtered amorphous GeTe and Ge2Sb2Te5 thin films. The changes in the local order have been analyzed by Raman and EXAFS spectroscopy.
E Rimini +9 more
openaire +2 more sources
Vibrational spectroscopy of ion-irradiated pentacene
Infrared Physics & Technology, 1994Abstract In this paper we present a study of the evolution of the IR and Raman spectrum of pentacene before, during and after irradiation with energetic ion beams, demonstrating the complex chemistry induced by incoming ions. The formation of a “new” aromatic network has been evidenced. Dehydrogenation occurs and the evolution towards what we call an
CANNIA R +3 more
openaire +1 more source
Vibrational spectroscopy of ion-irradiated ices
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2001In the last 20 years we have studied some effects induced by fast ions (E approximately keV-MeV) impinging on solid materials (mainly ices) with a view to their astrophysical relevance. The main techniques used have been infrared and Raman spectroscopy.
G, Strazzulla +2 more
openaire +2 more sources
Irradiation response of Nd2Zr2O7 under heavy ions irradiation
Journal of the European Ceramic Society, 2018Abstract This paper studied the irradiation behavior of Nd2Zr2O7 ceramics under 2.0 MeV Xe20+ irradiation to high fluences from 4.08 × 1013 ions/cm2 to 5.28 × 1016 ions/cm2. Phase transformation, from pyrochlore to fluorite and finally to amorphization, have been discovered.
Qi Qing +5 more
openaire +1 more source
Ion-chain interaction in keV ion-beam-irradiated polystyrene
Applied Physics Letters, 1987Molecular weight distribution has been measured in monodisperse polystyrene film (MW=9 000 amu) after ion bombardment, in the ion fluence range 1011–1013 ions/cm2. The chosen beams are 100 keV He, 200 keV Ne, and 400 keV Ar. The experimental data have been interpreted in terms of a simple statistical model for cross-links.
CALCAGNO, Lucia +3 more
openaire +2 more sources
Primary radical ions in irradiated carbonates
Physical Chemistry Chemical PhysicsThe decomposition of primary radical cations in irradiated carbonates via proton transfer is thermodynamically favorable but kinetically hindered.
Irina S. Tretyakova +1 more
openaire +2 more sources
Ion Irradiation of Preceramic Polymer Thin Films
Journal of the American Ceramic Society, 1996Thin films of two preceramic polymers, namely polycarbosilane (PCS) and a silicone resin (SR350), were deposited on Si substrates. Instead of employing conventional annealing at high temperatures in an inert atmosphere, ion irradiation was used to achieve the polymer‐to‐ceramic conversion.
J. C. PIVIN +2 more
openaire +3 more sources
Irradiation Effects in Ices by Energetic Ions
1989It has been shown that the irradiation of ices leads to “giant” erosion yields, in some specific conditions (1,2). In order to understand the physical processes involved, we have performed direct in-situ measurements of the erosion during irradiation, by means of infrared spectrometry of the ices.
Benit, J., Bibring, J.P., Rocard, F.
openaire +2 more sources
Online monitor of heavy ion flux in an ion irradiation apparatus for semiconductor irradiation test
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2008Abstract An online monitor of heavy ion flux for semiconductor irradiation test was developed and tested. The monitor consists of four annular-shaped segmented secondary electron emission monitors (S-SEMs) arranged in a quadrature around the central area of a beam line.
Takahiro Makino +3 more
openaire +1 more source
Physica Status Solidi (a), 1983
The dislocation loop damage structures generated by low dose (≦ 5 × 1016 ions m−2) 80 keV Xe++ ion irradiations of α-Fe at room temperature and 77 K are studied by transmission electron microscopy, b = a/2〈111〉 loops are observed for each irradiation condition whereas b = a〈100〉 loops are not observed after irradiation at 77 K and are only observed at ...
openaire +1 more source
The dislocation loop damage structures generated by low dose (≦ 5 × 1016 ions m−2) 80 keV Xe++ ion irradiations of α-Fe at room temperature and 77 K are studied by transmission electron microscopy, b = a/2〈111〉 loops are observed for each irradiation condition whereas b = a〈100〉 loops are not observed after irradiation at 77 K and are only observed at ...
openaire +1 more source