CERN Accelerating science


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Evaluation of high-precision atomic masses of A ∼ 50-80 and rare-earth nuclides measured with ISOLTRAP / Huang, W J (CSNSM, Orsay ; Heidelberg, Max Planck Inst.) ; Atanasov, D (CERN) ; Audi, G (CSNSM, Orsay) ; Blaum, K (Heidelberg, Max Planck Inst.) ; Cakirli, R B (Istanbul U.) ; Herlert, A (FAIR, Darmstadt) ; Kowalska, M (CERN) ; Kreim, S (Heidelberg, Max Planck Inst. ; CERN) ; Litvinov, Yu A (Darmstadt, GSI) ; Lunney, D (CSNSM, Orsay) et al.
High-precision mass measurements of stable and beta-decaying nuclides $^{52-57}$Cr, $^{55}$Mn, $^{56,59}$Fe, $^{59}$Co, $^{75, 77-79}$Ga, and the lanthanide nuclides $^{140}$Ce, $^{140}$Nd, $^{160}$Yb, $^{168}$Lu, $^{178}$Yb have been performed with the Penning-trap mass spectrometer ISOLTRAP at ISOLDE/CERN. The new data are entered into the Atomic Mass Evaluation and improve the accuracy of masses along the valley of stability, strengthening the so-called backbone. [...]
2019 - 9 p. - Published in : Eur. Phys. J. A 55 (2019) 96 Fulltext from Publisher: PDF;

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Nuclear charge radii of $^{62−80}$Zn and their dependence on cross-shell proton excitations / Xie, L (Manchester U.) ; Yang, X F (Peking U., SKLNPT ; Leuven U.) ; Wraith, C (Liverpool U.) ; Babcock, C (Liverpool U.) ; Bieroń, J (Jagiellonian U.) ; Billowes, J (Manchester U.) ; Bissell, M L (Manchester U. ; Leuven U.) ; Blaum, K (Heidelberg, Max Planck Inst.) ; Cheal, B (Liverpool U.) ; Filippin, L (U. Brussels (main)) et al.
Nuclear charge radii of $^{62−80}$Zn have been determined using collinear laser spectroscopy of bunched ion beams at CERN-ISOLDE. The subtle variations of observed charge radii, both within one isotope and along the full range of neutron numbers, are found to be well described in terms of the proton excitations across the $Z=28$ shell gap, as predicted by large-scale shell model calculations. [...]
2019 - 5 p. - Published in : Phys. Lett. B 797 (2019) 134805 Article from SCOAP3: PDF;

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Electromagnetic properties of low-lying states in neutron-deficient Hg isotopes: Coulomb excitation of $^{182}$Hg, $^{184}$Hg, $^{186}$Hg and $^{188}$Hg / Wrzosek-Lipska, K (Warsaw U., Heavy Ion Lab ; Leuven U.) ; Rezynkina, K (Leuven U. ; U. Strasbourg) ; Bree, N (Leuven U.) ; Zielińska, M (Warsaw U., Heavy Ion Lab ; IRFU, Saclay) ; Gaffney, L P (Liverpool U. ; Leuven U. ; CERN ; West Scotland U.) ; Petts, A (Liverpool U.) ; Andreyev, A (Leuven U. ; York U., England) ; Bastin, B (Leuven U. ; GANIL) ; Bender, M (Lyon, IPN) ; Blazhev, A (Cologne U.) et al.
The neutron-deficient mercury isotopes serve as a classical example of shape coexistence, whereby at low energy near-degenerate nuclear states characterized by different shapes appear. The electromagnetic structure of even-mass $^{182-188}$ Hg isotopes was studied using safe-energy Coulomb excitation of neutron-deficient mercury beams delivered by the REX-ISOLDE facility at CERN. [...]
2019 - 23 p. - Published in : Eur. Phys. J. A 55 (2019) 130 Fulltext: PDF;

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Hyperfine structure and nuclear magnetic moments of the praseodymium isotopes {135,136,137}^Pr / IS517 Collaboration
Collinear laser spectroscopy was applied to measure the hyperfine structure of {135−137}^Pr at ISOLDE/CERN. Combined with measurements of the stable isotope {141}^Pr at the TRIGA-SPEC setup in Mainz we were able to determine the magnetic moments of the neutron-deficient isotopes {135}^Pr, {136}^Pr and {137}^Pr for the first time..
- Published in : 10.1007/s10751-019-1608-5 Fulltext: PDF;

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Fine structure in the α decay of At218 / IS534 Collaboration
- Published in : 10.1103/PhysRevC.99.064317

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$Q_{\textrm{EC}}$-value determination for $^{21}$Na$\rightarrow^{21}$Ne and $^{23}$Mg$\rightarrow^{23}$Na mirror-nuclei decays using high-precision mass spectrometry with ISOLTRAP at ISOLDE/CERN / Karthein, J. (CERN ; Heidelberg, Max Planck Inst.) ; Atanasov, D. (Heidelberg, Max Planck Inst.) ; Blaum, K. (Heidelberg, Max Planck Inst.) ; Breitenfeldt, M. (CERN) ; Bondar, V. (Leuven U.) ; George, Sebastian ; Hayen, L. (Leuven U.) ; Lunney, D. (CSNSM, Orsay) ; Manea, V. (CERN) ; Mougeot, M. (CSNSM, Orsay) et al.
We report on high-precision $Q_{\textrm{EC}}$ values of the $^{21}$Na$\rightarrow^{21}$Ne and $^{23}$Mg$\rightarrow^{23}$Na mirror $\beta$-transitions from mass measurements with ISOLTRAP at ISOLDE/CERN. A precision of $\delta m/m = 9 \cdot 10^{-10}$ and $\delta m/m = 1.5 \cdot 10^{-9}$ was reached for the masses of $^{21}$Na and $^{23}$Mg, respectively. [...]
arXiv:1906.01538.- 2019-07-16 - 7 p. - Published in : Phys. Rev. C 100 (2019) 015502 Fulltext: PDF;

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Internal radiation dosimetry of a 152Tb-labeled antibody in tumor-bearing mice / Cicone, Francesco ; Gnesin, Silvano ; Denoël, Thibaut ; Stora, Thierry ; van der Meulen, Nicholas P. ; Müller, Cristina ; Vermeulen, Christiaan ; Benešová, Martina ; Köster, Ulli ; Johnston, Karl et al.
- Published in : 10.1186/s13550-019-0524-7

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Lattice location study of low-fluence ion-implanted 124In in 3C-SiC / Costa, A. R. G. ; Wahl, U. ; Correia, J. G. ; David-Bosne, E. ; Augustyns, V. ; Lima, T. A. L. ; Silva, D. J. ; da Silva, M. R. ; Bharuth-Ram, K. ; Pereira, L. M. C.
We report on the lattice location of low-fluence ion implanted 124In in single-crystalline 3C-SiC by means of the emission channeling technique using radioactive isotopes produced at the ISOLDE/CERN facility. In the sample implanted at room temperature to a fluence of 4 × 1012 cm−2, 60(9)% of the In atoms were found slightly displaced (0.12–0.20 Å) from substitutional Si sites, with the remainder occupying sites of low crystallographic symmetry, the so-called random sites. [...]
- Published in : Journal of Applied Physics 125 (2019) 215706 Fulltext: PDF;

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Time-of-Flight study of molecular beams extracted from the ISOLDE RFQ cooler and buncher / Ringvall Moberg, A. ; Warren, S. ; Muñoz Pequeño, C. ; Cruikshank, J. ; Giles, T. ; Hanstorp, D.
Molecular beams injected into the ISOLDE Radio-Frequency Quadrupole cooler and buncher (RFQcb), ISCOOL, have been studied under varying conditions using a new Time-of-Flight (ToF) detector. When a beam of molecules is injected into the RFQcb and interacts with the buffer gas, collisional dissociation processes may occur. [...]
- Published in : 10.1016/j.nimb.2019.03.014

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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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