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Simulations of a Proof-of-Principle Experiment for Collinear Laser Spectroscopy within a Multi-Reflection Time-of-Flight Device
/ Maier, F.M. (Linz U.) ; Fischer, P. (Greifswald U.) ; Heylen, H. (CERN) ; Lagaki, V. (CERN) ; Lechner, S. (CERN ; TU Vienna) ; Plattner, P. (CERN ; Innsbruck U.) ; Sels, S. (Greifswald U. ; CERN) ; Wienholtz, F. (CERN ; Greifswald U.) ; Nörtershäuser, W. (Darmstadt, Tech. U.) ; Schweikhard, L. (Greifswald U.) et al.
For nearly four decades Collinear Laser Spectroscopy (CLS) has been employed to determine ground-state properties of short-lived radionuclides. To extend its reach to the most exotic radionuclides with very low production yields, the novel Multi Ion Reflection Apparatus for CLS (MIRACLS) is currently under development at ISOLDE/CERN. [...]
CERN-ISOLDE-CONF-2019-007.-
Geneva : CERN, 2019 - 13.
- Published in : Hyperfine Interact 240 (2019) 54
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Fluorescence detection as a new diagnostics tool for electrostatic ion beam traps
/ Lechner, Simon (CERN ; TU Vienna) ; Fischer, Paul (Greifswald U.) ; Heylen, Hanne (CERN) ; Lagaki, Varvara (CERN ; Greifswald U.) ; Maier, Franziska (Linz U.) ; Plattner, Peter (CERN ; Innsbruck U.) ; Rosenbusch, Marco (Greifswald U.) ; Sels, Simon (CERN) ; Wienholtz, Frank (CERN ; Greifswald U.) ; Wolf, Robert N (Greifswald U.) et al.
In the development towards the Multi Ion Reflection Apparatus for Collinear Laser Spectroscopy (MIRACLS), an optical detection region for the observation of fluorescent light is added to an electrostatic ion beam trap (EIBT). In addition to its use for highly sensitive collinear laser spectroscopy, this fluorescence detection is introduced as a diagnostics tool for the study of the ion dynamics inside an EIBT. [...]
2019
- Published in : Hyperfine Interact. 240 (2019) 95
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3.
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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
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4.
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Spectroscopy of short-lived radioactive molecules
/ Garcia Ruiz, R.F. (CERN ; MIT) ; Breier, A.A. (Kassel U.) ; Giesen, T.F. (Kassel U.) ; Koszorús, Á. (Leuven U.) ; Berger, R. (Unlisted, DE) ; Billowes, J. (Manchester U.) ; Binnersley, C.L. (Manchester U.) ; Bissell, M.L. (Manchester U.) ; Brinson, A.J. (MIT) ; Chrysalidis, K. (CERN) et al.
The study of molecular systems provides exceptional opportunities for the exploration of the fundamental laws of nature and for the search for physics beyond the Standard Model of particle physics. Measurements of molecules composed of naturally occurring nuclei have provided the most stringent upper bounds to the electron electric dipole moment to date, and offer a route to investigate the violation of fundamental symmetries with unprecedented sensitivity. [...]
arXiv:1910.13416.-
2020-05-27 - 10 p.
- Published in : Nature 581 (2020) 396-400
Fulltext: PDF; Fulltext from Publisher: PDF;
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Direct decay-energy measurement as a route to the neutrino mass
/ Karthein, Jonas (CERN ; Heidelberg, Max Planck Inst.) ; Atanasov, Dinko (Dresden, Tech. U.) ; Blaum, Klaus (Heidelberg, Max Planck Inst.) ; Eliseev, Sergey (Heidelberg, Max Planck Inst.) ; Filianin, Pavel (Heidelberg, Max Planck Inst.) ; Lunney, David (CSNSM, Orsay) ; Manea, Vladimir (CERN) ; Mougeot, Maxime (CSNSM, Orsay) ; Neidherr, Dennis (Darmstadt, GSI) ; Novikov, Yuri (St. Petersburg State U. ; St. Petersburg, INP) et al.
A high-precision measurement of the $^{131}$Cs$ \rightarrow ^{131}$Xe ground-to-ground-state electron-capture $Q_{\textrm{EC}}$-value was performed using the ISOLTRAP mass spectrometer at ISOLDE/CERN. The novel PI-ICR technique allowed to reach a relative mass precision $\delta m/m$ of $1.4\cdot10^{-9}$. [...]
arXiv:1905.05510.-
2019-06-12 - 10 p.
- Published in : Hyperfine Interact. 240 (2019) 61
Fulltext: PDF;
In : 9th Symposium on Large TPCs for Low-Energy Rare Event Detection, Paris, France, 12 - 14 Dec 2018, pp.61
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6.
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Radioactive boron beams produced by isotope online mass separation at CERN-ISOLDE
/ Ballof, J (CERN ; Mainz U., Inst. Kernchem.) ; Seiffert, C (CERN ; Darmstadt, Tech. U.) ; Crepieux, B (CERN) ; Düllmann, Ch E (Mainz U., Inst. Kernchem. ; Darmstadt, GSI ; Helmholtz Inst., Mainz) ; Delonca, M (CERN) ; Gai, M (Connecticut U. LNS Avery Point Groton) ; Gottberg, A (CERN) ; Kröll, T (Darmstadt, Tech. U.) ; Lica, R (CERN ; Bucharest, IFIN-HH) ; Madurga Flores, M (CERN) et al.
We report on the development and characterization of the first radioactive boron beams produced by the isotope mass separation online (ISOL) technique at CERN-ISOLDE. Despite the long history of the ISOL technique which exploits thick targets, boron beams have up to now not been available. [...]
2019 - 11 p.
- Published in : Eur. Phys. J. A 55 (2019) 65
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7.
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Shape staggering of mid-shell mercury isotopes from in-source laser spectroscopy compared with Density Functional Theory and Monte Carlo Shell Model calculations
/ Sels, S. (KU Leuven, Dept. Phys. Astron.) ; Day Goodacre, T. (Manchester U. ; CERN) ; Marsh, B.A. (CERN) ; Pastore, A. (York U., England) ; Ryssens, W. (Lyon, IPN) ; Tsunoda, Y. (Tokyo U.) ; Althubiti, N. (Manchester U.) ; Andel, B. (Comenius U.) ; Andreyev, A.N. (York U., England ; JAEA, Ibaraki) ; Atanasov, D. (Heidelberg, Max Planck Inst.) et al.
Neutron-deficient $^{177-185}$Hg isotopes were studied using in-source laser resonance-ionization spectroscopy at the CERN-ISOLDE radioactive ion-beam facility, in an experiment combining different detection methods tailored to the studied isotopes. These include either alpha-decay tagging or Multi-reflection Time-of-Flight gating to identify the isotopes of interest. [...]
arXiv:1902.11211.-
2019-04-13 - 17 p.
- Published in : Phys. Rev. C 99 (2019) 044306
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Elliptic polylogarithms and Feynman parameter integrals
/ Broedel, Johannes (Humboldt U., Berlin, Inst. Math.) ; Duhr, Claude (CERN ; Louvain U., CP3) ; Dulat, Falko (SLAC) ; Penante, Brenda (CERN) ; Tancredi, Lorenzo (CERN)
In this paper we study the calculation of multiloop Feynman integrals that cannot be expressed in terms of multiple polylogarithms. We show in detail how certain types of two- and three-point functions at two loops, which appear in the calculation of higher order corrections in QED, QCD and in the electroweak theory (EW), can naturally be expressed in terms of a recently introduced elliptic generalisation of multiple polylogarithms by direct integration over their Feynman parameter representation. [...]
arXiv:1902.09971; CP3-19-07; CERN-TH-2019-016; HU-Mathematik-2019-01; HU-EP-19/03, SLAC-PUB-17406; HU-EP-19/03,
SLAC-PUB-17406.-
2019-05-21 - 37 p.
- Published in : JHEP 05 (2019) 120
Article from SCOAP3: PDF; Fulltext: PDF;
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An accuracy benchmark of the MIRACLS apparatus: Conventional, single-passage collinear laser spectroscopy inside a MR-ToF device
/ Lagaki, V (CERN ; Greifswald U.) ; Heylen, H (CERN) ; Belosevic, I (TRIUMF) ; Fischer, P (Greifswald U.) ; Kanitz, C (CERN ; Erlangen - Nuremberg U.) ; Lechner, S (CERN ; TU Vienna) ; Maier, F M (CERN ; Greifswald U.) ; Nörtershäuser, W (Darmstadt, Tech. U.) ; Plattner, P (CERN ; Innsbruck U.) ; Rosenbusch, M (Greifswald U.) et al.
Collinear laser spectroscopy (CLS) has been performed in a multi-reflection time-of-flight (MR-ToF) device operated in single-pass mode, i.e., without confining the ions in the ion trap. While our Multi Ion Reflection Apparatus for Collinear Laser Spectroscopy (MIRACLS) aims to increase the CLS sensitivity by storing ions in the MR-ToF device, the present work characterises conventional single-passage CLS as a preparatory step for the upcoming comparison with MIRACLS’ multi-pass mode. [...]
2021 - 10 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 1014 (2021) 165663
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10.
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Characterization of the shape-staggering effect in mercury nuclei
/ Marsh, B A (CERN) ; Day Goodacre, T (CERN ; Manchester U.) ; Sels, S (Leuven U.) ; Tsunoda, Y (Tokyo U., CNS) ; Andel, B (Comenius U.) ; Andreyev, A N (York U., England ; JAEA, Ibaraki) ; Althubiti, N A (Manchester U.) ; Atanasov, D (Heidelberg, Max Planck Inst.) ; Barzakh, A E (St. Petersburg, INP) ; Billowes, J (Manchester U.) et al.
In rare cases, the removal of a single proton (Z) or neutron (N) from an atomic nucleus leads to a dramatic shape change. These instances are crucial for understanding the components of the nuclear interactions that drive deformation. [...]
2018 - 6 p.
- Published in : Nature Phys. 14 (2018) 1163-1167
Fulltext: PDF; External link: INTERACTIONS
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