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Ionization potential of radium monofluoride
/ Wilkins, S.G. (MIT) ; Perrett, H.A. (Manchester U.) ; Udrescu, S.M. (MIT) ; Kyuberis, A.A. (U. Groningen, VSI) ; Pašteka, L.F. (U. Groningen, VSI ; Comenius U.) ; Au, M. (CERN ; Mainz U.) ; Belošević, I. (MIT ; TRIUMF) ; Berger, R. (Philipps U. Marburg) ; Binnersley, C.L. (Manchester U.) ; Bissell, M.L. (Manchester U.) et al.
The ionization potential (IP) of radium monofluoride (RaF) was measured to be 4.969(2)[10] eV, revealing a relativistic enhancement in the series of alkaline earth monofluorides. [...]
arXiv:2408.14673.
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Radiative lifetime of the A 2Π1/2 state in RaF with relevance to laser cooling
/ ISOLDE Collaboration
The radiative lifetime of the $A$$^2 \Pi_{1/2}$ (v=0) state in radium monofluoride (RaF) is measured to be 35(1) ns. The lifetime of this state and the related decay rate $\Gamma = 2.86(8) \times 10^7$$s^{-1}$ are of relevance to the laser cooling of RaF via the optically closed $A$$^2 \Pi_{1/2} \leftarrow X$$^2\Sigma_{1/2}$ transition, which makes the molecule a promising probe to search for new physics. [...]
arXiv:2403.09336.-
2024-07-22 - 8 p.
- Published in : Phys. Rev. A 110 (2024) L010802
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Investigating radioactive negative ion production via double electron capture
/ Nichols, M (Goteborg, ITP) ; Athanasakis-Kaklamanakis, M (CERN ; Leuven U.) ; Borschevsky, A (Groningen U.) ; Cocolios, T E (Leuven U.) ; Crosa-Rossa, R (Groningen U.) ; de Groote, R P (Leuven U.) ; Flanagan, K T (Manchester U.) ; Ruiz, R F Garcia (MIT) ; Geldhof, S (Leuven U.) ; Hanstorp, D (Goteborg, ITP) et al.
The relative cross sections for radioactive negative ion production via double electron capture have been measured for collisions between a 40 keV projectile beam of uranium-238 and potassium vapor. This was performed at the collinear resonance ionization spectroscopy (CRIS) experiment at CERN-ISOLDE and is a step towards measuring the electron affinities (EAs) of elements that cannot be efficiently produced in negative ion sources at radioactive ion beam (RIB) facilities. [...]
2023 - 4 p.
- Published in : Nucl. Instrum. Methods Phys. Res., B 541 (2023) 264-267
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In : 19th International Conference on Electromagnetic Isotope Separators and Related Topics (EMIS 2022), Daejeon, Korea, 3 - 7 Oct 2022, pp.264-267
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Opportunities for Fundamental Physics Research with Radioactive Molecules
/ Arrowsmith-Kron, Gordon (Michigan State U.) ; Athanasakis-Kaklamanakis, Michail (CERN ; Leuven U.) ; Au, Mia (CERN ; Mainz U.) ; Ballof, Jochen (CERN ; Michigan State U.) ; Berger, Robert (Philipps U. Marburg) ; Borschevsky, Anastasia (U. Groningen, VSI) ; Breier, Alexander A. (Kassel U.) ; Buchinger, Fritz (McGill U.) ; Budker, Dmitry (Darmstadt, GSI ; UC, Berkeley) ; Caldwell, Luke (JILA, Boulder ; U. Colorado, Boulder ; Colorado U.) et al.
Molecules containing short-lived, radioactive nuclei are uniquely positioned to enable a wide range of scientific discoveries in the areas of fundamental symmetries, astrophysics, nuclear structure, and chemistry. Recent advances in the ability to create, cool, and control complex molecules down to the quantum level, along with recent and upcoming advances in radioactive species production at several facilities around the world, create a compelling opportunity to coordinate and combine these efforts to bring precision measurement and control to molecules containing extreme nuclei. [...]
arXiv:2302.02165.-
2024-07-12 - 119 p.
- Published in : Rep. Prog. Phys. 87 (2024) 084301
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Measuring the electron affinity of polonium
/ Nichols, M ; Athanasakis-Kaklamanakis, M ; Balasmeh, Y ; Borschevsky, A ; Cocolios, T E ; Crosa-Rossa, R ; de Groote, R P ; Fajordo-Zambrano, C ; Flanagan, K T ; Garcia Ruiz, R F et al.
CERN-INTC-2023-011 ; INTC-007.
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2023.
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Measuring the electron affinity of polonium
/ Nichols, M ; Athanasakis-Kaklamanakis, M ; Balasmeh, Y ; Borschevsky, A ; Cocolios, T E ; Crosa-Rossa, R ; de Groote, R P ; Fajordo-Zambrano, C ; Flanagan, K T ; Garcia Ruiz, R F et al.
CERN-INTC-2023-010 ; INTC-P-654.
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2023.
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In-source laser resonance ionization spectroscopy of neptunium and plutonium
/ Au, Mia (SY-STI, CERN, Switzerland, Johannes Gutenberg-Universit{\"a}t Mainz, Germany) ; Borschevsky, Anastasia (Rijksuniversiteit Groningen, Groningen, Netherlands) ; Chrysalidis, Katerina (SY-STI, CERN, Switzerland) ; Crosa-Rossa, Raphaël (Rijksuniversiteit Groningen, Groningen, Netherlands) ; Düllmann, Christoph (Johannes Gutenberg-Universit{\"a}t Mainz, Germany) ; Heinke, Reinhard (SY-STI, CERN, Switzerland) ; Jaradat, Asar (SY-STI, CERN, Switzerland) ; Kaja, Magdalena (Johannes Gutenberg-Universit{\"a}t Mainz, Germany) ; Marsh, Bruce (SY-STI, CERN, Switzerland) ; Moore, Iain (University of Jyv{\"a}skyl{\"a}, Finland) et al.
CERN-INTC-2022-028 ; INTC-I-243.
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2022.
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Large Shape Staggering in Neutron-Deficient Bi Isotopes
/ Barzakh, A (St. Petersburg, INP) ; Andreyev, A N (JAEA, Ibaraki ; York U., England) ; Raison, C (York U., England) ; Cubiss, J G (York U., England) ; Van Duppen, P (Leuven U.) ; Péru, S (CEA DAM) ; Hilaire, S (CEA DAM) ; Goriely, S (Brussels U., IAA) ; Andel, B (Comenius U.) ; Antalic, S (Comenius U.) et al.
The changes in the mean-square charge radius (relative to $^{209}$Bi), magnetic dipole, and electric quadrupole moments of $^{187,188,189,191}$Bi were measured using the in-source resonance-ionization spectroscopy technique at ISOLDE (CERN). A large staggering in radii was found in $^{187,188,189}$Big, manifested by a sharp radius increase for the ground state of $^{188}$Bi relative to the neighboring $^{187,189}$Big. [...]
2021 - 7 p.
- Published in : Phys. Rev. Lett. 127 (2021) 192501
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Tin resonance-ionization schemes for atomic- and nuclear-structure studies
/ Gustafsson, F P (Leuven U.) ; Ricketts, C M (Manchester U.) ; Reitsma, M L (U. Groningen, VSI) ; Garcia Ruiz, R F (CERN ; MIT) ; Bai, S W (Peking U., SKLNPT) ; Berengut, J C (Heidelberg, Max Planck Inst. ; New South Wales U.) ; Billowes, J (Manchester U.) ; Binnersley, C L (Manchester U.) ; Borschevsky, A (U. Groningen, VSI) ; Cocolios, T E (Leuven U.) et al.
This paper presents high-precision spectroscopic measurements of atomic tin using five different resonanceionization schemes performed with the collinear resonance-ionization spectroscopy technique. Isotope shifts were measured for the stable tin isotopes from the $5s^2 5p^2$ $^3P_{0,1,2}$ and $^1S_0$ to the $5s^2 5p6s ^1P_1, ^3P_{1,2}$ and $5s^2 5p7s^1 P_1$ atomic levels. [...]
2020 - 13 p.
- Published in : Phys. Rev. A 102 (2020) 052812
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