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CERN Document Server Pronađeno je 2,014 zapisa  1 - 10slijedećikraj  idi na zapis: Pretraživanje je potrajalo 0.47 sekundi 
1.
(100)
Magnesium-Vacancy Optical Centers in Diamond / Corte, Emilio ; Andrini, Greta ; Nieto Hernández, Elena ; Pugliese, Vanna ; Costa, Ângelo ; Magchiels, Goele ; Moens, Janni ; Tunhuma, Shandirai Malven ; Villarreal, Renan ; Pereira, Lino M. C. et al.
We provide the first systematic characterization of the structural and photoluminescence properties of optically active centers fabricated upon implantation of 30–100 keV Mg+ ions in synthetic diamond. The structural configurations of Mg-related defects were studied by the electron emission channeling technique for short-lived, radioactive 27Mg implantations at the CERN-ISOLDE facility, performed both at room temperature and 800 °C, which allowed the identification of a major fraction of Mg atoms (∼30 to 42%) in sites which are compatible with the split-vacancy structure of the MgV complex. [...]
- Published in : ACS Photonics 10 (2023) 101-110 Fulltext: MgV_SupportingInformation - PDF; ACSPhotonics_2023_10_0101 - PDF;
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2.
(91)
 Quantum colour centers in diamond studied by emission channeling with short-lived isotopes (EC-SLI) and radiotracer photoluminescence - ISOLDE.
Approved: 16 September 2020.-
Status: Preparation
External link: Experiment home page
Experiment: IS668
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3.
(71)
Direct Structural Identification and Quantification of the Split-Vacancy Configuration for Implanted Sn in Diamond / Wahl, Ulrich (Universidade de Lisboa (PT)) ; Martins Correia, Joao (Universidade de Lisboa (PT)) ; Villarreal, Renan (KU Leuven) ; Bourgeois, Emilie (Hasselt University) ; Gulka, Michal (Hasselt University) ; Nesladek, Milos (Hasselt University) ; Vantomme, André (KU Leuven) ; Da Costa Pereira, Lino Miguel (KU Leuven (BE)) /EC-SLI Collaboration ; IS368 Collaboration
We demonstrate formation of the ideal split-vacancy configuration of the Sn-vacancy center upon implantation into natural diamond. Using beta-emission channeling following low fluence 121Sn implantation (2E12 atoms/cm2, 60 keV) at the ISOLDE facility at CERN, we directly identified and quantified the atomic configurations of the Sn-related centers. [...]
CERN-ISOLDE-2021-002.- 2020 - 7 p. - Published in : Phys. Rev. Lett. 125 (2020) 045301 Postprint: PDF; Supplemental material: PDF;
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4.
(61)
Three-pronged approach to color centers in diamond: a case study for calcium / Lamelas, Afonso Xavier
Diamond is a material with multiple promising color centers for quantum technologies [...]
CERN-THESIS-2021-234 - 50 p.

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5.
(60)
Lattice Location Studies of the Amphoteric Nature of Implanted Mg in GaN / IS634 Collaboration
Despite the renewed interest in ion implantation doping of GaN, efficient electrical activation remains a challenge. The lattice location of $^{27}$Mg is investigated in GaN of different doping types as a function of implantation temperature and fluence at CERN's ISOLDE facility. [...]
2021 - 10 p. - Published in : Advanced Electronic Materials 7 (2021) 2100345 Submitted version, due to embargo period until 19.6.2022: PDF; Supporting Information: PDF;
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6.
(59)
 Radiotracer Spectroscopy on Group II Acceptors in GaN / Dietrich, Minstitute - ISOLDE.
Approved: 15 February 2001.-
Status: Finished
Experiment: IS391
Detaljnije - Slični zapisi
7.
(58)
Structural formation yield of GeV centers from implanted Ge in diamond / Wahl, Ulrich (IST, Lisbon (main)) ; Correia, João Guilherme (IST, Lisbon (main)) ; Costa, Ângelo (Leuven U.) ; Lamelas, Afonso (Aveiro U.) ; Amaral, Vítor (Aveiro U.) ; Johnston, Karl (CERN) ; Magchiels, Goele (Leuven U.) ; Tunhuma, Shandirai Malven (Leuven U.) ; Vantomme, André (Leuven U.) ; Pereira, Lino M C (Leuven U.)
In order to study the structural formation yield of germanium-vacancy (GeV) centers from implanted Ge in diamond, we have investigated its lattice location by using the β$^{−}$ emission channeling technique from the radioactive isotope $^{75}$Ge (t$_{1/2}$ = 83 min) produced at the ISOLDE/CERN facility. $^{75}$Ge was introduced via recoil implantation following 30 keV ion implantation of the precursor isotope $^{75}$Ga (126 s) with fluences around 2 × 10$^{12}$–5 × 10$^{13}$ cm$^{−2}$. [...]
2024 - 16 p. - Published in : Mat. Quant. Tech. 4 (2024) 025101 Fulltext: PDF;
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8.
(45)
Quantum colour centers in diamond studied by emission channeling with short-lived isotopes (EC-SLI) and radiotracer photoluminescence / Pereira, LMC (KU Leuven) ; Wahl, U (Instituto Superior Técnico) ; Correia, JG (Instituto Superior Técnico) ; Biesmans, B (KU Leuven) ; Costa, ARG (KU Leuven) ; da Silva, MR (Universidade de Aveiro) ; David Bosne, E (Technical University Prague) ; Lamelas, A (Universidade de Aveiro) ; Magchiels, G (KU Leuven) ; Moens, J (KU Leuven) et al.
CERN-INTC-2023-004 ; INTC-P-562-ADD-1. - 2023.
Fulltext - Original Document (INTC-P-562)
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9.
(45)
Precise lattice location of substitutional and interstitial Mg in AlN / Amorim, Lígia Marina (Leuven U.) ; Wahl, Ulrich (IST/ITN, Lisbon) ; Pereira, Lino Miguel da Costa (Leuven U.) ; Decoster, Stefan (Leuven U.) ; Silva, Daniel José (Porto U.) ; Silva, Manuel Ribeiro da (Lisbon U., CFAUL) ; Gottberg, Alexander (CERN) ; Correia, João Guilherme (IST/ITN, Lisbon) ; Temst, Kristiaan (Leuven U.) ; Vantomme, André (Leuven U.)
The lattice site location of radioactive $^{27}$Mg implanted in AlN was determined by means of emission channeling. The majority of the $^{27}$Mg was found to substitute for Al, yet significant fractions (up to 33%) were also identified close to the octahedral interstitial site. [...]
CERN-OPEN-2014-013.- Leuven : KU Leuven, 2013 - 5 p. - Published in : Appl. Phys. Lett. 103 (2013) 262102 Preprint: PDF;
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10.
(44)
Lattice location of Mg in GaN: a fresh look at doping limitations / EC-SLI Collaboration
Radioactive 27Mg (t1/2=9.5 min) was implanted into GaN of different doping types at CERN’s ISOLDE facility and its lattice site determined via beta− emission channeling. Following implantations between room temperature and 800°C, the majority of 27Mg occupies the substitutional Ga sites, however, below 350°C significant fractions were also found on interstitial positions ~0.6 Å from ideal octahedral sites. [...]
CERN-OPEN-2017-005.- Lisboa, Portugal : Lisbon, IST, 2017 - 5 p. - Published in : Phys. Rev. Lett. 118 (2017) 095501 Preprint: PDF;
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