Lattice sites of implanted Na in GaN and AlN in comparison to other light alkalis and alkaline earths

Autor: Ulrich Wahl, E. David-Bosne, L. M. C. Pereira, L. M. Amorim, André Vantomme, B. L. de Vries, M.R. da Silva, J. G. Correia, A. R. G. Costa

Publikováno v: Journal of Applied Physics

The lattice location of ion implanted radioactive 24Na (t1/2=14.96 h) in GaN and AlN was determined using the emission channeling technique at the ISOLDE/CERN facility. In the room temperature as-implanted state in both GaN and AlN, the majority of t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::84cccb44b6f05313b60057f65e019750
https://doi.org/10.1063/5.0009653

Effect of fluence on the lattice site of implanted Er and implantation induced strain in GaN

Autor: André Vantomme, Stefan Decoster, B. L. de Vries, J. G. Correia, Ulrich Wahl

Publikováno v: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 267:1340-1344

A GaN thin film was implanted with 5 × 1014 cm−2 of 60 keV stable 166Er, followed by the implantation of 2 × 1013 cm−2 radioactive 167Tm (t1/2 = 9.3 d) and an annealing sequence up to 900 °C. The emission channeling (EC) technique was applied

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a91a88ac7dc11bbd409c321afc7a8d5f
https://doi.org/10.1016/j.nimb.2009.01.043

Micron-sized forsterite grains in the pre-planetary nebula of IRAS 17150-3224. Searching for clues to the mysterious evolution of massive AGB stars

Autor: L.B.F.M. Waters, Michiel Min, K. M. Maaskant, J. A. D. L. Blommaert, B. L. de Vries, Robin Lombaert

Publikováno v: Astronomy & Astrophysics, 576, A98
Astronomy & Astrophysics, 576:A98. EDP Sciences

We study the grain properties and location of the forsterite crystals in the circumstellar environment of the pre-planetary nebula (PPN) IRAS 17150-3224 in order to learn more about the as yet poorly understood evolutionary phase prior to the PPN. We

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0cb71e36ebf12ab7854d298a6f7ff083
https://dare.uva.nl/personal/pure/en/publications/micronsized-forsterite-grains-in-the-preplanetary-nebula-of-iras-171503224-searching-for-clues-to-the-mysterious-evolution-of-massive-agb-stars(19348c67-fa85-44de-a8ab-0303d3f61694).html

Emission channeling experiments from the decay of to in GaN

Autor: André Vantomme, Ulrich Wahl, J. G. Correia, B. L. de Vries

Publikováno v: Materials Science and Engineering: B. 105:106-110

The lattice site location of excited states of 149 Eu was studied by means of the emission channeling technique. The 60 keV implantation of 149 Tb into a GaN thin film was performed at room temperature up to a dose of 2.0×1013 cm−2. This radioacti

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6d3dd93f75e2368832c1b76aff73b890
https://doi.org/10.1016/j.mseb.2003.08.025

The debris disc of solar analogue tau Ceti : Herschel observations and dynamical simulations of the proposed multiplanet system

Autor: J. A. D. L. Blommaert, Walter Kieran Gear, Wayne S. Holland, B. L. de Vries, G. Olofsson, B. Sibthorpe, Brenda C. Matthews, Sam Lawler, Bart Vandenbussche, Grant M. Kennedy, Ana M. Heras, Mark Booth, Carsten Dominik, Rob Ivison, Mikko Tuomi, Malcolm Fridlund, David J. Wilner, J. Di Francesco, Jane Greaves

Publikováno v: Monthly Notices of the Royal Astronomical Society, 444, 3, pp. 2665-2675
Monthly Notices of the Royal Astronomical Society, 444, 2665-2675
Monthly Notices of the Royal Astronomical Society, 444(3), 2665-2675. Oxford University Press

$\tau$ Ceti is a nearby, mature G-type star very similar to our Sun, with a massive Kuiper Belt analogue (Greaves et al. 2004) and possible multiplanet system (Tuomi et al. 2013) that has been compared to our Solar System. We present Herschel Space O

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f0659e142a8ec05cd5c5cc900fa47407
https://hdl.handle.net/10023/5835