𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Kinetic electron emission in the interactions of slow ions with MgO surfaces

✍ Scribed by P. Riccardi; P. Barone; A. Bonanno; A. Oliva; P. Vetrò; M. Ishimoto; R.A. Baragiola

Publisher
Elsevier Science
Year
2005
Tongue
English
Weight
134 KB
Volume
230
Category
Article
ISSN
0168-583X

No coin nor oath required. For personal study only.

✦ Synopsis

We report experimental energy distributions and yields of electrons emitted from MgO surfaces under the impact of slow noble gas and sodium singly charged ions at varying incident energies.

At impact energies below $1 keV, electron spectra are nearly independent of ion type and energy. A tail of highenergy electrons is observed to grow at higher impact energies.

The results are explained in terms of promotion of oxygen-2p electrons during binary projectile-oxygen collisions populating continuum and excitonic states. Excitons can significantly contribute to electron emission due to the negative electron affinity of the surface.

📜 SIMILAR VOLUMES

Plasmon excitation and electron promotio
Plasmon excitation and electron promotion in the interaction of slow Na+ ions with Al surfaces
✍ M. Commisso; A. Bonanno; A. Oliva; M. Camarca; F. Xu; P. Riccardi; R.A. Baragiol 📂 Article 📅 2005 🏛 Elsevier Science 🌐 English ⚖ 188 KB

We studied the energy distributions of electrons emitted in the interaction of slow Na + ions with polycrystalline Al surfaces. To study sub-threshold plasmon excitation we performed measurements as a function of emission angle which showed the excitation of bulk plasmons, confirming the kinetic nat

Interaction of slow highly charged ions
Interaction of slow highly charged ions with the inner surface of nanocapillaries
✍ R. Hellhammer; P. Sobocinski; Z.D. Pešić; J. Bundesmann; D. Fink; N. Stolterfoht 📂 Article 📅 2005 🏛 Elsevier Science 🌐 English ⚖ 188 KB

The transmission of 1-10 keV Ne 7+ ions through nanocapillaries in a highly insulating PET polymer was studied. Capillaries with a diameter of 100 nm and a length of 10 lm in PET were produced using chemical etching techniques. For slow projectiles the angular distributions of the transmitted ions s