CERN Accelerating science

CERN Document Server 195 records found  1 - 10nextend  jump to record: Search took 1.26 seconds. 
1.
Radiative Decay of the $^{229m}$Th Nuclear Clock Isomer in Different Host Materials / Pineda, S.V. (Leuven U.) ; Chhetri, P. (Leuven U. ; Mainz U.) ; Bara, S. (Leuven U.) ; Elskens, Y. (Leuven U.) ; Casci, S. (Leuven U.) ; Alexandrova, A.N. (UCLA, Los Angeles (main)) ; Au, M. (CERN) ; Athanasakis-Kaklamanakis, M. (Leuven U. ; CERN ; Imperial Coll., London) ; Bartokos, M. (Vienna, Tech. U., Atominst.) ; Beeks, K. (Ecole Polytechnique, Lausanne) et al.
A comparative vacuum ultraviolet spectroscopy study conducted at ISOLDE-CERN of the radiative decay of the $^{229m}$Th nuclear clock isomer embedded in different host materials is reported. [...]
arXiv:2408.12309.
- 13.
Fulltext
2.
As$^{\textrm{III}}$ Selectively Induces a Disorder-to-Order Transition in the Metalloid Binding Region of the AfArsR Protein / Tóth, Annamária ; Sajdik, Kadosa ; Gyurcsik, Béla ; Nafaee, Zeyad H ; Wéber, Edit ; Kele, Zoltan ; Christensen, Niels Johan ; Schell, Juliana (CERN) ; Correia, Joao Guilherme (CERN) ; Clauss, Kajsa G V Sigfridsson et al.
Arsenic is highly toxic and a significant threat to human health, but certain bacteria have developed defense mechanisms initiated by AsIII binding to AsIII-sensing proteins of the ArsR family. The transcriptional regulator AfArsR responds to AsIII and SbIII by coordinating the metalloids with three cysteines, located in a short sequence of the same monomer chain. [...]
2024 - 14 p. - Published in : J. Am. Chem. Soc. 146 (2024) 17009-17022 Fulltext: PDF;
3.
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;
4.
The EFG at Hg and Cd for isolated molecules in frozen solution / Röder, J (Aveiro U. ; CERN) ; Haas, H (Aveiro U. ; CERN) ; Correia, J G (CERN ; Lisbon, IST) ; van Stiphout, K (Gottingen U., II. Phys. Inst.)
In order to obtain quantitative information about the changes of the EFG in closed-shell metal-organic molecules by the interactions with an inert matrix, two cases, dimethylmercury and dimethylcadmium, were measured using $^{199m}$Hg and $^{111m}$Cd PAC, respectively, in frozen diethyl ether and tetrahydrofuran. With the knowledge of high-accuracy nuclear quadrupole moments and available precision EFG values from quantum chemistry CCSD-T calculations the expected NQI frequencies of the free molecules are available and can be compared to the ones measured in the frozen solutions..
2024 - 6 p. - Published in : Hyperfine Interact. 245 (2024) 48
5.
S77C-ΔC7-CueR: a $^{199m}$Hg PAC study of the protein metal site structure / Balogh, R K (Szeged U.) ; Jancso, A (Szeged U.) ; Gyurcsik, B (Szeged U.) ; Schell, J (Duisburg-Essen U. ; CERN) ; Correia, J G (Lisbon U.) ; Thulstrup, P W (Bohr Inst.) ; Hemmingsen, L (Bohr Inst.)
The CueR protein regulates the cytosolic concentration of Cu(I) in bacteria such as E. coli. [...]
2024 - 7 p. - Published in : Hyperfine Interact. 245 (2024) 43 Fulltext: PDF;
6.
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;
7.
Cd implantation in α-MoO3: An atomic scale study / Gerami, Adeleh Mokhles (IPM, Tehran ; CERN) ; Heiniger-Schell, Juliana (CERN ; Duisburg-Essen U.) ; da Silva, E Lora (Porto U.) ; Costa, Messias S (Para U.) ; Costa, Cleidilane S (Para U.) ; Monteiro, João G (IST/ITN, Lisbon) ; Pires, José J (Lisbon, CFTP) ; Pereira, Daniela R (Lisbon, ISEL) ; Díaz-Guerra, Carlos (Madrid U.) ; Carbonari, Artur W (IPEN, Sao Paulo) et al.
Lamellar α-MoO3 crystals were implanted with low fluence of radioactive Cd111m ions at ISOLDE-CERN. Subsequently, we have probed the interaction of the Cd impurity in the lattice with native point defects, such as oxygen vacancies, as a function of annealing temperature using the time differential perturbed angular correlations nanoscopic technique. [...]
2023 - 15 p. - Published in : Phys. Rev. Mater. 7 (2023) 033603 Fulltext: PDF;
8.
Microscopic insight by nuclear hyperfine methods on ferroic Perovskites / Lopes, A M L ; Schell, J H ; Carbonari, A W ; Amaral, V S ; Araujo, J P ; Lupascu, D C ; Dang, T T ; Yap, I C J ; Burimova, A ; Correia, J G et al.
CERN-INTC-2023-045 ; INTC-CLL-054.
- 2023.
Fulltext - Original Document (INTC-P-663)
9.
Perturbed Angular Correlation Technique at ISOLDE/CERN Applied for Studies of Hydrogenated Titanium Dioxide (TiO2): Observation of Cd-H Pairs / Zyabkin, Dmitry V (Ilmenau Tech. U.) ; Schell, Juliana (CERN ; Duisburg-Essen U.) ; Correia, João G M (CERN ; IST/ITN, Lisbon) ; Vetter, Ulrich (Ilmenau Tech. U.) ; Schaaf, Peter (Ilmenau Tech. U.)
Profound understanding of the local electronic and defect structure in semiconductors always plays a vital role in the further developing of applications of such materials. In the present work an investigation of the electronic structure in hydrogenated TiO2 (rutile) thin films is conducted by virtue of Time-Differential γ-γ Perturbed Angular Correlation spectroscopy (TDPAC or PAC) with 111mCd/Cd isotope, produced and implanted at ISOLDE/CERN. [...]
2022 - 10 p. - Published in : Crystals 12 (2022) 756 Fulltext: PDF;
10.
Probing structural transitions in M(II) vanadates (M = Zn, Mn, Cd, Ca) with TDPAC spectroscopy / Burimova, Anastasia (Instituto de Pesquisas Energeticas e Nucleares, IPEN, Sao Paulo, SP, Brazil) ; Carbonari, Artur Wilson (Instituto de Pesquisas Energeticas e Nucleares, IPEN, Sao Paulo, SP, Brazil) ; Heiniger-Schell, Juliana (European Organization for Nuclear Research (CERN), CH-1211 Geneva, Switzerland; Institute for Materials Science and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 45141 Essen, Germany) ; Leite Neto, Osmar Flavio da Silveira (Instituto de Pesquisas Energeticas e Nucleares, IPEN, Sao Paulo, SP, Brazil) ; Saxena, Rajendra Narain (Instituto de Pesquisas Energeticas e Nucleares, IPEN, Sao Paulo, SP, Brazil) ; Sales, Tatiane da Silva Nascimento (Instituto de Pesquisas Energeticas e Nucleares, IPEN, Sao Paulo, SP, Brazil) ; Genezini, Frederico Antonio (Instituto de Pesquisas Energeticas e Nucleares, IPEN, Sao Paulo, SP, Brazil) ; Pereira, Luciano Fabricio Dias (Instituto de Pesquisas Energeticas e Nucleares, IPEN, Sao Paulo, SP, Brazil) ; Ribeiro Junior, Ibere Souza (Instituto de Pesquisas Energeticas e Nucleares, IPEN, Sao Paulo, SP, Brazil) ; Correa, Bruno Santos (Instituto de Pesquisas Energeticas e Nucleares, IPEN, Sao Paulo, SP, Brazil) et al.
CERN-INTC-2023-023 ; INTC-P-661.
- 2023.
Fulltext

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See also: similar author names
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13 Correia, JG
1 Correia, JG ITN and CFNUL Portugal and PH dept CERN Switzerland
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