2024-03-16 04:05 |
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2024-03-09 06:40 |
Temperature Dependence of the Hyperfine Magnetic Field at Fe Sites in Ba-Doped BiFeO$_3$ Thin Films Studied by Emission Mössbauer Spectroscopy
/ Heiniger-Schell, Juliana (CERN ; Duisburg-Essen U.) ; Bharuth-Ram, Krish (ENS, Lyon, Lab. Phys. ; KwaZulu Natal U. ; DUT, Durban) ; Naicker, Kimara (ENS, Lyon, Lab. Phys. ; KwaZulu Natal U.) ; Masondo, Vusumuzi (DUT, Durban) ; Dang, Thien Thanh (Duisburg-Essen U.) ; Escobar, Marianela (Duisburg-Essen U.) ; Díaz-Guerra, Carlos (Madrid U.) ; Marschick, Georg (Vienna, Tech. U.) ; Masenda, Hilary (Witwatersrand U.) ; Gunnlaugsson, Haraldur P (Iceland U.) et al.
Emission $^{57}$Fe Mössbauer spectroscopy (eMS), following the implantation of radioactive $^{57}$Mn+ ions, has been used to study the temperature dependence of the hyperfine magnetic field at Fe sites in Ba-doped BiFeO$_3$ (BFO) thin films. $^{57}$Mn β decays (t$_{1/2}$ = 90 s) to the 14.4 keV Mössbauer state of $^{57}$Fe, thus allowing online eMS measurements at a selection of sample temperatures during Mn implantation. [...]
2023 - 13 p.
- Published in : Crystals 13 (2023) 724
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2024-02-07 06:23 |
The SPES laser ion source: Time structure, laser enhancement and efficiency measurements with gallium at ISOLDE Offline 2
/ Khwairakpam, O S (Siena U. ; Marseille, CPT ; INFN, Legnaro) ; Mancheva, R (CERN ; KU Leuven, Dept. Phys. Astron.) ; Au, M (CERN) ; Bernerd, C (CERN ; KU Leuven, Dept. Phys. Astron.) ; Centofante, L (INFN, Legnaro) ; Chrysalidis, K (CERN) ; Crepieux, B (CERN) ; Fedosseev, V N (CERN) ; Heinke, R (CERN) ; Marchi, T (INFN, Legnaro) et al.
The SPES laser ion source has been tested at ISOLDE Offline 2, CERN. A two-step single resonance photo-ionization scheme has been used to ionize gallium atoms in the SPES tantalum hot-cavity ion source. [...]
2024 - 10 p.
- Published in : Nucl. Instrum. Methods Phys. Res., B 548 (2024) 165249
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2024-01-31 14:59 |
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2024-01-10 06:25 |
Characterization of the field ionization extension for the laser ion source and trap: Measurement of the ionization potential of ytterbium
/ Kaja, Magdalena (Mainz U., Inst. Phys.) ; Studer, Dominik ; Heinke, Reinhard (CERN) ; Kieck, Tom (Darmstadt, GSI ; Helmholtz Inst., Mainz) ; Wendt, Klaus (Mainz U., Inst. Phys.)
We report on the development and application of the Field Ionization Laser Ion Source and Trap (FI-LIST) at the RISIKO mass separator at Mainz University. The FI-LIST is an adaptation of the well-established LIST unit developed at Mainz and successfully adapted to CERN-ISOLDE. [...]
2023 - 7 p.
- Published in : Nucl. Instrum. Methods Phys. Res., B 547 (2024) 165213
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2023-12-21 06:55 |
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2023-12-20 04:28 |
Production and characterization of a $^{222}$Rn-emanating stainless steel source
/ Jörg, Florian (Heidelberg, Max Planck Inst.) ; Eurin, Guillaume (Heidelberg, Max Planck Inst. ; IRFU, Saclay) ; Simgen, Hardy (Heidelberg, Max Planck Inst.)
Precise radon measurements are a requirement for various applications, ranging from radiation protection over environmental studies to material screening campaigns for rare-event searches. All of them ultimately depend on the availability of calibration sources with a known and stable radon emanation rate. [...]
arXiv:2205.15926.-
2023-01-20 - 7 p.
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In : 8th International conference on radionuclide metrology - low level radioactivity measurement techniques (ICRM-LLRMT 2022), Assergi, Italy, 2 - 6 May 2022, pp.110666
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2023-12-20 04:24 |
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2023-12-20 04:20 |
A multi-reflection time-of-flight mass spectrometer for the offline ion source of the PUMA experiment
/ Schlaich, M. (Darmstadt, Tech. Hochsch.) ; Fischer, J. (Darmstadt, Tech. Hochsch.) ; Fischer, P. (Greifswald U.) ; Klink, C. (Darmstadt, Tech. Hochsch.) ; Obertelli, A. (Darmstadt, Tech. Hochsch.) ; Schmidt, A. (Darmstadt, Tech. Hochsch.) ; Schweikhard, L. (Greifswald U.) ; Wienholtz, F. (Darmstadt, Tech. Hochsch.)
The antiProton Unstable Matter Annihilation experiment (PUMA) at CERN aims at investigating the nucleon composition in the matter density tail of radioactive as well as stable isotopes by use of low-energy antiproton-nucleon annihilation processes. For this purpose, antiprotons provided by the Extra Low ENergy Antiproton (ELENA) facility will be trapped together with the ions of interest. [...]
arXiv:2311.16150.-
2023-10-31 - 9 p.
- Published in : Int. J. Mass Spectrometry 495 (2024) 117166
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2023-12-13 14:03 |
Magnesium-Vacancy Optical Centers in Diamond
/ Corte, Emilio ; Andrini, Greta ; Nieto Hernández, Elena ; Pugliese, Vanna ; Costa, Ângelo ; Magchiels, Goele ; Moens, Janni ; Tunhuma, Shandirai Malven ; Villarreal, Renan ; Pereira, Lino M. C. et al.
We provide the first systematic characterization of the structural and photoluminescence properties of optically active centers fabricated upon implantation of 30–100 keV Mg+ ions in synthetic diamond. The structural configurations of Mg-related defects were studied by the electron emission channeling technique for short-lived, radioactive 27Mg implantations at the CERN-ISOLDE facility, performed both at room temperature and 800 °C, which allowed the identification of a major fraction of Mg atoms (∼30 to 42%) in sites which are compatible with the split-vacancy structure of the MgV complex. [...]
- Published in : ACS Photonics 10 (2023) 101-110
Fulltext: MgV_SupportingInformation - PDF; ACSPhotonics_2023_10_0101 - PDF;
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