2023-05-05
06:19 |
Axial and triaxial degrees of freedom in $^{72}$Zn
/ Hellgartner, S (Munich, Tech. U.) ; Mücher, D (Cologne U. ; Guelph U. ; TRIUMF) ; Wimmer, K (Darmstadt, GSI ; Madrid, Inst. Estructura Materia ; Tokyo U.) ; Bildstein, V (Guelph U.) ; Egido, J L (Madrid, Autonoma U.) ; Gernhäuser, R (Munich, Tech. U.) ; Krücken, R (LBNL, NSD) ; Nowak, A K (Munich, Tech. U.) ; Zielinska, M (IRFU, Saclay) ; Bauer, C (Darmstadt, Tech. U.) et al.
The unstable N=42 nucleus 72Zn has been studied using multiple safe Coulomb excitation in inverse kinematics. The experiment was performed at the REX-ISOLDE facility at CERN making first use of the silicon detector array C-REX in combination with the γ-ray spectrometer Miniball. [...]
2023 - 8 p.
- Published in : Phys. Lett. B 841 (2023) 137933
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2023-04-29
06:09 |
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2023-04-08
04:38 |
In-source and in-trap formation of molecular ions in the actinide mass range at CERN-ISOLDE
/ Au, M. (CERN ; Mainz U.) ; Athanasakis-Kaklamanakis, M. (CERN ; Leuven U.) ; Nies, L. (CERN ; Greifswald U.) ; Ballof, J. (CERN ; Michigan State U., East Lansing (main) ; Philipps U. Marburg) ; Berger, R. (CERN) ; Chrysalidis, K. (CERN) ; Fischer, P. (Greifswald U.) ; Heinke, R. (CERN) ; Johnson, J. (Leuven U.) ; Köster, U. (CERN ; Laue-Langevin Inst.) et al.
The use of radioactive molecules for fundamental physics research is a developing interdisciplinary field limited dominantly by their scarce availability. In this work, radioactive molecular ion beams containing actinide nuclei extracted from uranium carbide targets are produced via the Isotope Separation On-Line technique at the CERN-ISOLDE facility. [...]
arXiv:2303.12215.-
2023-06-02 - 5 p.
- Published in : Nucl. Instrum. Methods Phys. Res., B 541 (2023) 375-379
Fulltext: 2303.12215 - PDF; Publication - PDF;
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2023-03-17
06:16 |
Compositional Dependence of Epitaxial
L
1
0
‐Mn
x
Ga Magnetic Properties as Probed by
57
Mn/Fe and
119
In/Sn Emission Mössbauer Spectroscopy
/ Unzueta, Iraultza (Basque U., Bilbao) ; Gunnlaugsson, Haraldur Pall (Iceland U.) ; Mølholt, Torben Esmann (CERN) ; Masenda, Hilary (U. Witwatersrand, Johannesburg, Sch. Phys.) ; Mokhles Gerami, Adeleh (IPM, Tehran) ; Krastev, Petko (Sofiya, Inst. Nucl. Res.) ; Zyabkin, Dmitry V (Ilmenau Tech. U.) ; Bharuth-Ram, Krish (KwaZulu Natal U.) ; Naidoo, Deena (U. Witwatersrand, Johannesburg, Sch. Phys.) ; Ólafsson, Sveinn (Iceland U.) et al.
The magnetic properties of MnxGa alloys critically depend on compositionx, andthe atomic-scale origin of those dependences is still not fully disclosed. Molecularbeam epitaxy has been used to produce a set of MnxGa samples (x¼0.7÷1.9)with strong perpendicular magnetic anisotropy, and controllable saturationmagnetization and coercivefield depending onx. [...]
2022 - 11 p.
- Published in : Phys. Status Solidi B 259 (2022) 2200121
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2023-03-17
06:16 |
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2023-03-17
06:16 |
Room-Temperature $^{181}$Ta(TiO$_2$): An e-γ TDPAC Study
/ Yap, Ian Chang Jie (Gottingen U., II. Phys. Inst.) ; Schell, Juliana (CERN ; Duisburg-Essen U.) ; Dang, Thien Thanh (Duisburg-Essen U.) ; Noll, Cornelia (Bonn U., HISKP) ; Beck, Reinhard (Bonn U., HISKP) ; Köster, Ulli (Laue-Langevin Inst.) ; Mansano, Ronaldo (Sao Paulo U.) ; Hofsäss, Hans Christian (Gottingen U., II. Phys. Inst.)
In this work, we report on the hyperfine parameters of the foreign 181Ta probe in the rutile structure of the single crystal TiO2 using the e−γ and γ−γ time differential perturbed angular correlation (TDPAC) technique. We implanted 181Hf ions into a sample of single crystal rutile TiO2 in the Bonn Isotope Separator. [...]
2022 - 31 p.
- Published in : Crystals 12 (2022) 946
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2023-03-17
06:15 |
Anisotropy of the Electric Field Gradient in Two-Dimensional α-MoO$_3$ Investigated by $^{57}$Mn($^{57}$Fe) Emission Mössbauer Spectroscopy
/ Schell, Juliana (CERN ; Duisburg-Essen U.) ; Zyabkin, Dmitry (Ilmenau Tech. U.) ; Bharuth-Ram, Krish (KwaZulu Natal U.) ; Gonçalves, João N (Aveiro U.) ; Díaz-Guerra, Carlos (Madrid U.) ; Gunnlaugsson, Haraldur P (Iceland U.) ; Martín-Luengo, Aitana Tarazaga (Linz U.) ; Schaaf, Peter (Ilmenau Tech. U.) ; Bonanni, Alberta (Linz U.) ; Masenda, Hilary (Witwatersrand U. ; Philipps U. Marburg) et al.
Van der Waals α-MoO3 samples offer a wide range of attractive catalytic, electronic, and optical properties. We present herein an emission Mössbauer spectroscopy (eMS) study of the electric-field gradient (EFG) anisotropy in crystalline free-standing α-MoO3 samples. [...]
2022 - 13 p.
- Published in : Crystals 12 (2022) 942
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2023-03-17
06:15 |
Confirming the Unusual Temperature Dependence of the Electric-Field Gradient in Zn
/ Haas, Heinz (Aveiro U. ; CERN) ; Zyabkin, Dmitry (Ilmenau Tech. U.) ; Schell, Juliana (CERN ; Duisburg-Essen U.) ; Dang, Thien T (Duisburg-Essen U.) ; Yap, Ian C J (Gottingen U., II. Phys. Inst.) ; Michelon, Ilaria (Padua U.) ; Gaertner, Daniel (Munster U.) ; Gerami, Adeleh Mokhles (IPM, Tehran) ; Noll, Cornelia (Bonn U.) ; Beck, Reinhard (Bonn U.)
The electric-field gradient (EFG) at nuclei in solids is a sensitive probe of the charge distribution. Experimental data, which previously only existed in insulators, have been available for metals with the development of nuclear measuring techniques since about 1970. [...]
2022 - 8 p.
- Published in : Crystals 12 (2022) 1064
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2023-02-15
06:21 |
The empirical shell gap revisited in light of recent high precision mass spectrometry data
/ Manea, Vladimir (IJCLab, Orsay) ; Mougeot, Maxime (CERN ; Heidelberg, Max Planck Inst. ; Jyvaskyla U.) ; Lunney, David (IJCLab, Orsay)
We present an updated view on the phenomenon of mutually enhanced magicity based on the current experimental knowledge of atomic masses, including some recent precision measurements performed with the ISOLTRAP mass spectrometer at ISOLDE/CERN. We discuss the trends of the proton and neutron empirical shell gaps computed either in the standard approach, along chains corresponding to magic numbers of protons and neutrons, respectively, or along the neighbouring isotonic chains differing by two nucleon numbers. [...]
2023 - 10 p.
- Published in : Eur. Phys. J. A 59 (2023) 22
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2022-11-30
10:59 |
Charge and spin state of dilute Fe in NaCl and LiF
/ ISOLDE Collaboration
There is an apparent mismatch between electron paramagnetic resonance and Mössbauer spectroscopy results on the charge and spin states of dilute Fe impurities in NaCl; Mössbauer spectroscopy data have been interpreted in terms of high-spin Fe$^{2+}$, while electron paramagnetic resonance studies suggest low-spin Fe$^{1+}$. In the present study, the charge and spin states of dilute substitutional Fe impurities in NaCl and LiF have been investigated with $^{57}$Mn → $^{57}$Fe emission Mössbauer spectroscopy. [...]
2022 - 10 p.
- Published in : Phys. Rev. B 106 (2022) 174108
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