CERN Accelerating science

ISOLDE Papers

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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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2018-08-31
04:47
Precision Mass Measurement of $^{58-63}$Cr: Nuclear Collectivity towards the $N=40$ Island of Inversion / Mougeot, M. (CSNSM, Orsay) ; Atanasov, D. (Heidelberg, Max Planck Inst.) ; Blaum, K. (Heidelberg, Max Planck Inst.) ; Chrysalidis, K. (CERN) ; Day Goodacre, T. (CERN ; Manchester U.) ; Fedorov, D. (St. Petersburg, INP) ; Fedosseev, V. (CERN) ; George, S. (Heidelberg, Max Planck Inst.) ; Herfurth, F. (Darmstadt, GSI) ; Holt, J.D. (TRIUMF) et al.
The neutron-rich isotopes $^{58-63}$Cr were produced for the first time at the ISOLDE facility and their masses were measured with the ISOLTRAP spectrometer. The new values are up to 300 times more precise than those in the literature and indicate significantly different nuclear structure from the new mass-surface trend. [...]
arXiv:1808.03997.- 2018-08-12 - 6 p. - Published in : Phys. Rev. Lett. 120 (2018) 232501 Fulltext: PDF;

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2018-05-29
08:13
Potassium self-diffusion in a K-rich single-crystal alkali feldspar / Hergemöller, Fabian ; Wegner, Matthias ; Deicher, Manfred ; Wolf, Herbert ; Brenner, Florian ; Hutter, Herbert ; Abart, Rainer ; Stolwijk, Nicolaas A.
The paper reports potassium diffusion measurements performed on gem-quality single-crystal alkali feldspar in the temperature range from 1169 to 1021 K. Natural sanidine from Volkesfeld, Germany was implanted with {}^{43}K at the ISOLDE/CERN radioactive ion-beam facility normal to the (001) crystallographic plane [...]
- Published in : Physics and Chemistry of Minerals 44 (2017) 345-351 arXiv:1701.02884: PDF;

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2018-04-25
06:14
Mass-selective ion ejection from multi-reflection time-of-flight devices via a pulsed in-trap lift / Wienholtz, F (Greifswald U. ; CERN) ; Kreim, S (CERN ; Heidelberg, Max Planck Inst.) ; Rosenbusch, M (Greifswald U.) ; Schweikhard, L (Greifswald U.) ; Wolf, R N (Heidelberg, Max Planck Inst.)
A method for high-resolution mass selection is presented which makes use of a multi-reflection time-of-flight mass spectrometer with in-trap lift. The new method needs no additional gating or deflection components. [...]
2017 - 9 p. - Published in : Int. J. Mass Spectrometry 421 (2017) 285-293

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2018-01-25
06:56
Binding Energy of $^{79}\mathrm{Cu}$: Probing the Structure of the Doubly Magic $^{78}\mathrm{Ni}$ from Only One Proton Away / Welker, A (Dresden, Tech. U. ; CERN) ; Althubiti, N  A  S (Manchester U.) ; Atanasov, D (Heidelberg, Max Planck Inst.) ; Blaum, K (Heidelberg, Max Planck Inst.) ; Cocolios, T  E (Leuven U.) ; Herfurth, F (Darmstadt, GSI) ; Kreim, S (Heidelberg, Max Planck Inst.) ; Lunney, D (CSNSM, Orsay) ; Manea, V (CERN ; Heidelberg, Max Planck Inst.) ; Mougeot, M (CSNSM, Orsay) et al.
The masses of the neutron-rich copper isotopes Cu75–79 are determined using the precision mass spectrometer ISOLTRAP at the CERN-ISOLDE facility. The trend from the new data differs significantly from that of previous results, offering a first accurate view of the mass surface adjacent to the Z=28, N=50 nuclide Ni78 and supporting a doubly magic character. [...]
2017 - 6 p. - Published in : Phys. Rev. Lett. 119 (2017) 192502 Fulltext: PDF;

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2017-12-11
10:48
Neodymium-140 DOTA-LM3: Evaluation of an In Vivo Generator for PET with a Non-Internalizing Vector / IS528 Collaboration
140Nd (t1/2 = 3.4 days), owing to its short-lived positron emitting daughter 140Pr (t1/2 = 3.4 min), has promise as an in vivo generator for positron emission tomography (PET). However, the electron capture decay of 140Nd is chemically disruptive to macrocycle-based radiolabeling, meaning that an in vivo redistribution of the daughter 140Pr is expected before positron emission. [...]
2017 - Published in : Front. Med. 4 (2017) 98

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2017-11-02
06:23
Bunching and cooling of radioactive ions with REXTRAP / Schmidt, P (Mainz U., Inst. Phys.) ; Ames, F (Mainz U., Inst. Phys.) ; Bollen, G (Munich U.) ; Forstner, O (CERN) ; Huber, G (Mainz U., Inst. Phys.) ; Oinonen, M (CERN) ; Zimmer, J (Heidelberg, Max Planck Inst.) /REX-ISOLDE
The post-accelerator REX-ISOLDE at ISOLDE/CERN will deliver radioactive ion beams with energies up to 2.2 MeV/u. For this purpose, a Penning trap and an electron-beam ion source are combined with a linear accelerator. [...]
2002 - 7 p. - Published in : Nucl. Phys. A 701 (2002) 550-556

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2017-10-17
07:16
Study of the long-lived excited state in the neutron deficient nuclides $^{195,197,199}$Po by precision mass measurement / ISOLTRAP Collaboration
Direct mass measurements of the low-spin $3/2^{(-)}$ and high-spin $13/2^{(+)}$ states in the neutron-deficient isotopes $^{195}$Po, $^{197}$Po, and high-spin $13/2^{(+)}$ state in $^{199}$Po were performed with the Penning-trap mass spectrometer ISOLTRAP at ISOLDE-CERN. These measurements allow the determination of the excitation energy of the isomeric state arising from the $\nu$i$_{13/2}$ orbital in $^{195,197}$Po. [...]
arXiv:1705.03546.- 2017-10-27 - 9 p. - Published in : Phys. Rev. C 96 (2017) 044325 Preprint: PDF;

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2017-09-29
06:23
Laser photodetachment of radioactive $^{128}$I$^−$ / Rothe, Sebastian (CERN) ; Sundberg, Julia (CERN ; U. Gothenburg) ; Welander, Jakob (U. Gothenburg) ; Chrysalidis, Katerina (CERN ; Mainz U., Inst. Phys.) ; Goodacre, Thomas Day (CERN) ; Fedosseev, Valentin (CERN) ; Fiotakis, Spyridon (CERN) ; Forstner, Oliver (U. Jena) ; Heinke, Reinhard (Mainz U., Inst. Phys.) ; Johnston, Karl (CERN) et al.
The first experimental investigation of the electron affinity (EA) of a radioactive isotope has been conducted at the CERN-ISOLDE radioactive ion beam facility. The EA of the radioactive iodine isotope (128)I (t (1/2) = 25 min) was determined to be 3.059 052(38) eV. [...]
2017 - 10 p. - Published in : J. Phys. G 44 (2017) 104003 Fulltext: PDF;

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2017-09-14
10:00
Fast-timing spectroscopy at ISOLDE / Fraile, L M (Madrid U.)
The advanced time-delayed $\beta \gamma \gamma $(t) method has been used at ISOLDE since the relocation of the facility from the synchrocyclotron to the CERN proton synchrotron booster, a quarter of a century ago. The method was designed for precision measurements with low-intensity beams, achieving good efficiency and excellent time resolution with a compact setup. [...]
2017 - 24 p. - Published in : J. Phys. G 44 (2017) 094004 Fulltext: PDF;

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