CERN Accelerating science

ISOLDE Papers

Posledne pridané:
2019-03-26
16:11
Magnetic field at Ce impurities in La sites of La0.5Ba0.5MnO3 double perovskites / B. Bosch-Santos ; N. M. Nascimento, M. Saiki, E. L. Correa, T. S. N. Sales, L. F. D. Pereira, G. A. Cabrera-Pasca, R. N. Saxena, J. Schell, and A. W. Carbonari /IS652 Collaboration
Due to its rich variety of electromagnetic properties, such as a colossal magnetoresistance, charge and orbital ordering, and metal-insulator transition, the magnetic behavior in La0.5Ba0.5MnO3 double perovskite compounds has been investigated by several techniques, however more experimental data, especially from atomic resolution techniques, are still necessary to understand such complex behavior. In this paper, we have used a nuclear and short-range technique, the Perturbed Angular Correlation (PAC) spectroscopy, to investigate the magnetic hyperfine interaction at the 140Ce and 111Cd probe nuclei as impurities occupying La sites. [...]
- Published in : AIP Advances 9 (2019) 035245

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2019-03-06
07:00
Lattice sites of ion-implanted Mn, Fe and Ni in 6H-SiC / Costa, A R G (IST, Lisbon (main)) ; Wahl, U (IST, Lisbon (main)) ; Correia, J G (IST, Lisbon (main)) ; David-Bosne, E (IST, Lisbon (main)) ; Amorim, L M (Leuven U.) ; Augustyns, V (Leuven U.) ; Silva, D J (Porto U., Astron. Dept.) ; da Silva, M R (Lisbon U., CFNUL) ; Pereira, L M C (Leuven U.) /ISOLDE
Using radioactive isotopes produced at the CERN-ISOLDE facility, the lattice location of the implanted transition metal (TM) ions $^56$Mn, $^59$Fe and $^65$Ni in n-type single-crystalline hexagonal 6H-SiC was studied by means of the emission channeling technique. TM probes on carbon coordinated tetrahedral interstitial sites ($T_C$) and on substitutional silicon sites ($S_{Si,h+k}$) were identified. [...]
2017 - 10 p. - Published in : Semicond. Sci. Technol. 33 (2017) 015021 Fulltext: PDF;

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2019-03-06
07:00
Ultra sensitive quantification of Hg$^{2+}$  sorption by functionalized nanoparticles using radioactive tracker spectroscopy / Amorim, Carlos O (Aveiro U. ; U. Aveiro (main)) ; Gonçalves, João N (Aveiro U.) ; Tavares, Daniela S (U. Aveiro (main)) ; Fenta, Abel S (Aveiro U. ; CERN ; Leuven U.) ; Lopes, Cláudia B (U. Aveiro (main) ; CIIMAR, Porto) ; Pereira, Eduarda (U. Aveiro (main)) ; Trindade, Tito (U. Aveiro (main)) ; Correia, João G (CERN ; IST, Lisbon (main)) ; Amaral, Vítor S (Aveiro U.) /Isolde
We present an ultra sensitive method to quantify the uptake of Hg by dithiocarbamate functionalized magnetic nanoparticles using radioactive tracker spectroscopy. We show a lower limit of detection of about 10 fg L-1, much lower than any other known techniques used to determine the uptake of Hg (about 104 more sensitive), without the need of digesting or processing the sorption agent. [...]
2018 - 6 p. - Published in : Microchem. J. 138 (2018) 418-423 Fulltext: PDF;

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2019-03-06
07:00
Tracer diffusion in single crystalline CoCrFeNi and CoCrFeMnNi high entropy alloys / Gaertner, Daniel (U. Munster) ; Kottke, Josua (U. Munster) ; Wilde, Gerhard (U. Munster) ; Divinski, Sergiy V (U. Munster) ; Chumlyakov, Yury (Tomsk State U.) /ISOLDE
High entropy alloys are multicomponent alloys, which consist of five or more elements in equiatomic or nearly equiatomic concentrations. These materials are hypothesized to show significantly decreased self-diffusivities. [...]
2018 - 8 p. - Published in : J. Mater. Res. 33 (2018) 3184-3191 Fulltext: PDF;

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2019-03-06
07:00
Evidence of tetragonal distortion as the origin of the ferromagnetic ground state in $\gamma$−Fe nanoparticles / Augustyns, V (Leuven U.) ; van Stiphout, K (Leuven U.) ; Joly, V (Leuven U.) ; Lima, T A L (Leuven U.) ; Lippertz, G (Leuven U.) ; Trekels, M (Leuven U.) ; Menéndez, E (Leuven U.) ; Kremer, F (Australian Natl. U., Canberra) ; Wahl, U (IST, Lisbon (main)) ; Costa, A R G (IST, Lisbon (main)) et al. /Isolde
$\gamma$−Fe and related alloys are model systems of the coupling between structure and magnetism in solids. Since different electronic states (with different volumes and magnetic ordering states) are closely spaced in energy, small perturbations can alter which one is the actual ground state. [...]
2017 - Published in : Phys. Rev. B 96 (2017) 174410 Fulltext: PDF;

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2019-03-06
07:00
The nuclear magnetic moment of $^{208}$Bi and its relevance for a test of bound-state strong-field QED / Schmidt, S (Darmstadt, Tech. U.) ; Billowes, J (Manchester U.) ; Bissell, M L (Manchester U.) ; Blaum, K (Heidelberg, Max Planck Inst.) ; Garcia Ruiz, R F (Manchester U.) ; Heylen, H (Heidelberg, Max Planck Inst.) ; Malbrunot-Ettenauer, S (CERN) ; Neyens, G (Leuven U.) ; Nörtershäuser, W (Darmstadt, Tech. U.) ; Plunien, G (Dresden, Tech. U., ITP) et al.
The hyperfine structure splitting in the $6p^{3\ 4}S_{3/2} \rightarrow 6p^27s^4P_{1/2}$ transition at 307 nm in atomic $^{208}$Bi was measured with collinear laser spectroscopy at ISOLDE, CERN. The hyperfine A and B factors of both states were determined with an order of magnitude improved accuracy. [...]
2018 - 7 p. - Published in : Phys. Lett. B 779 (2018) 324-330 Article from SCOAP3: PDF;

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2019-02-06
10:03
Investigation of Low-lying States in $^{133}$Sn Populated in the $\beta $ Decay of $^{133}$In Using Isomer-selective Laser Ionization / IS610 Collaboration
- Published in : Acta Physica Polonica B49 (2018) 523

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2019-02-06
09:57
$\beta$ decay of $^{133}$In : $\gamma$ emission from neutron-unbound states in $^{133}$Sn / IS610 Collaboration
- Published in : Physical Review C99 (2019) 024304

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2018-12-19
10:05
Enhanced Quadrupole and Octupole Strength in Doubly Magic $^{132}$Sn / Rosiak, D. (Cologne U.) ; Seidlitz, M. (Cologne U.) ; Reiter, P. (Cologne U.) ; Naïdja, H. (Constantine U. ; Strasbourg, IPHC) ; Tsunoda, Y. (Tokyo U., CNS) ; Togashi, T. (Tokyo U., CNS) ; Nowacki, F. (Strasbourg, IPHC) ; Otsuka, T. (Michigan State U., NSCL ; KU Leuven, Dept. Phys. Astron. ; Tokyo U., CNS ; Tokyo U.) ; Colò, G. (INFN, Milan ; Milan U.) ; Arnswald, K. (Cologne U.) et al. /MINIBALL ; HIE-ISOLDE
The first $2^+$ and $3^-$ states of the doubly magic nucleus $^{132}$Sn are populated via safe Coulomb excitation employing the recently commissioned HIE-ISOLDE accelerator at CERN in conjunction with the highly efficient MINIBALL array. The $^{132}$Sn ions are accelerated to an energy of 5.49  MeV/nucleon and impinged on a $^{206}$Pb target. [...]
2018-12-18 - 6 p. - Published in : 10.1103/PhysRevLett.121.252501 Fulltext: PDF;

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2018-09-20
06:46
Determination of the first ionization energy of polonium by resonance ionization spectroscopy – Part II: Measurement of odd-parity Rydberg states at CERN–ISOLDE / Fink, D A (CERN) ; Blaum, K ; Fedosseev, V N (CERN) ; Marsh, B A ; Rossel, R E (CERN) ; Rothe, S (CERN)
Polonium (Po) is one of the rarest elements in Earth's crust. None of its isotopes are stable and sufficient amounts for systematic experimental studies of its most fundamental properties are only available by artificial production. [...]
- Published in : 10.1016/j.sab.2018.08.004

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