Cross sections for atomic displacements in solids by fast electrons

Oen, O.S.

doi:10.2172/4457758

Cited by 78 publications

(21 citation statements)

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“…4a). Such data are on the whole consistent with those recently used for YSZ irradiations in a 1-MV high-voltage electron microscope [13], with reference to the well-known Oen's charts [14] except for the near-threshold Zr-atom data below 1 b, since the O-atom collision cascade contribution is not taken into account in the latter calculations for monoatomic targets. Anyway, these results show that damage by elastic collisions should be produced at about 200 keV in the O-sublattice for E d = 40 eV.…”

Section: Discussionsupporting

confidence: 87%

Threshold displacement energy in yttria‐stabilized zirconia

Costantini

Beuneu

2007

Phys. Status Solidi (c)

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PACS 61.80. Fe, 61.82.Ms, 76.30.Mi We have studied the color center production in yttria-stabilized zirconia single crystals (i.e. ZrO 2 : Y with 9.5 mol% Y 2 O 3 ) with the (100) orientation, by electron irradiations at energies ranging between 1.0 and 2.5 MeV. Electron paramagnetic resonance (EPR) measurements show that three paramagnetic centers are stable at room-temperature: i) an F + -type center (singly ionized oxygen vacancy), ii) the so-called T-center (Zr 3+ in a trigonal oxygen environment), and iii) a hole center. The growth curves of F + -type centers at variable electron energy cannot be rescaled versus the absorbed dose. These data confirm that F + -type center production is primarily governed by elastic collision processes with a threshold electron energy about 1.0 MeV. This can be correlated to a threshold displacement energy either about 120 eV for the O-atoms in the collision cascades, or about 80 eV for the Zr-(or Y-) atoms. In contrast, the growth curves of T-centers at variable electron energy are rescaled versus the absorbed dose.

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Section: Discussionsupporting

confidence: 87%

Threshold displacement energy in yttria‐stabilized zirconia

Costantini

Beuneu

2007

Phys. Status Solidi (c)

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“…accdl6ratrices sup6rieures a 1,5 MV, le nombre de boucles crd6es croissait anormalement. Si l'on cherche dans les probabilit6s de deplacement des atomes une explication a ce phenomene [18][19][20], on constate que la section efficace de deplacement ne rend pas compte d'une variation aussi brutale meme si l'on consid6re la possibilite de cascades (Fig. 8).…”

Section: Discussionunclassified

“…8. -Sections efficaces de deplacement du cadmium et du tellure en fonction de Fenergie cindtique des electrons incidents calculees a partir des tables de Oen [18]. Les energies seuil de deplacement utilisees sont celles d6termin6es par Bryant et al [19,20].…”

Section: Discussionunclassified

Etude expérimentale de la dynamique de croissance de défauts étendus, sous irradiation électronique à haute énergie, dans le tellurure de cadmium

Gué

Mazel

1988

J. Phys. France

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“…to our experimental data. Tabulated values taking into account the formation of displacement cascades were used for the total displacement cross sections [14]. The result of the numerical fit to the experimental data is shown in Fig.…”

Section: Critical Amorphization Dose As a Function Of Electron Energymentioning

confidence: 99%

Quantitative Studies on the Amorphization of Quasicrystals by Means of High Voltage Electron Microscopy

Bauer

Hohenstein

Wilkens

1990

phys. stat. sol. (a)

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The radiation‐induced phase transition from the quasicrystalline to the amorphous state is studied by means of highvoltage electron microscopy. The quasicrystalline phases in the investigated alloys, Al86Mn14, Al76Mn20Si4, Al80Mn16Ru4, Al86Mn7Fe7, and Mg32Al19Zn30 can all be amorphized under irradiation with 1 MeV electrons at temperatures between 20 and 30 K. Furthermore, the electron dose required for complete amorphization of the quasicrystals is determined in dependene of electron energy in Al86Mn14 and Mg32Al19Zn30 alloys and in dependence of irradiation temperature and orientation of the quasicrystals in the Al86Mn14 alloy. The results of investigations on are discussed the basis of the current structural models. It is concluded that a high degree of chemical order is a prerequisite for the stability of the quasicrystalline phases.

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Cross sections for atomic displacements in solids by fast electrons

Cited by 78 publications

References 0 publications

Threshold displacement energy in yttria‐stabilized zirconia

Threshold displacement energy in yttria‐stabilized zirconia

Etude expérimentale de la dynamique de croissance de défauts étendus, sous irradiation électronique à haute énergie, dans le tellurure de cadmium

Quantitative Studies on the Amorphization of Quasicrystals by Means of High Voltage Electron Microscopy

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