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Impact of Newly Measured <math display="inline"><mi>β</mi></math>-Delayed Neutron Emitters around <math display="inline"><mrow><mmultiscripts><mrow><mi>Ni</mi></mrow><mprescripts/><none/><mrow><mn>78</mn></mrow></mmultiscripts></mrow></math> on Light Element Nucleosynthesis in the Neutrino Wind Following a Neutron Star Merger
/ Tolosa-Delgado, A. (CSIC, Madrid ; CERN ; Jyvaskyla U.) ; Tain, J.L. ; Reichert, M. ; Arcones, A. ; Eichler, M. ; Rasco, B.C. ; Brewer, N.T. ; Rykaczewski, K.P. ; Yokoyama, R. ; Grzywacz, R. et al.
Neutron emission probabilities and half-lives of 37 beta-delayed neutron emitters from 75Ni to 92Br were measured at the RIKEN Nishina Center in Japan, including 11 one-neutron and 13 two-neutron emission probabilities and 6 half-lives measured for the first time, which supersede theoretical estimates. These nuclei lie in the path of the weak r-process occurring in neutrino-driven winds from the accretion disk formed after the merger of two neutron stars, synthesizing elements in the A~80 abundance peak. [...]
arXiv:2504.06008.-
2025-05-01 - 11 p.
- Published in : Phys. Rev. Lett. 134 (2025) 172701
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First Evidence of Axial Shape Asymmetry and Configuration Coexistence in <math display="inline"><mrow><mmultiscripts><mrow><mi>Zn</mi></mrow><mprescripts/><none/><mrow><mn>74</mn></mrow></mmultiscripts></mrow></math>: Suggestion for a Northern Extension of the <math display="inline"><mi>N</mi><mo>=</mo><mn>40</mn></math> Island of Inversion
/ Rocchini, M. (Guelph U.) ; Garrett, P.E. (Guelph U.) ; Zielínska, M. (IRFU, Saclay) ; Lenzi, S.M. (Padua U. ; INFN, Padua) ; Dao, D.D. (Strasbourg, IPHC) ; Nowacki, F. (Strasbourg, IPHC) ; Bildstein, V. (Guelph U.) ; MacLean, A.D. (Guelph U.) ; Olaizola, B. (TRIUMF ; CERN) ; Ahmed, Z.T. (Guelph U.) et al.
The excited states of $N=44$$^{74}$Zn were investigated via $\gamma$-ray spectroscopy following $^{74}$Cu $\beta$ decay. By exploiting $\gamma$-$\gamma$ angular correlation analysis, the $2_2^+$, $3_1^+$, $0_2^+$ and $2_3^+$ states in $^{74}$Zn were firmly established. [...]
arXiv:2302.07394.-
2023-03-24 - 6 p.
- Published in : Phys. Rev. Lett. 130 (2023) 122502
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Between atomic and nuclear physics: radioactive decays of highly-charged ions
/ Atanasov, Dinko (Darmstadt, GSI ; Heidelberg, Max Planck Inst.) ; Blaum, Klaus (Heidelberg, Max Planck Inst. ; Heidelberg U.) ; Bosch, Fritz (Darmstadt, GSI) ; Brandau, Carsten (Darmstadt, GSI ; U. Giessen (main)) ; Bühler, Paul (Stefan Meyer Inst. Subatomare Phys.) ; Chen, Xiangcheng (Darmstadt, GSI ; Lanzhou, Inst. Modern Phys.) ; Dillmann, Iris (Darmstadt, GSI ; U. Giessen (main) ; TRIUMF) ; Faestermann, Thomas (Munich, Tech. U.) ; Gao, Bingshui (Darmstadt, GSI ; Heidelberg, Max Planck Inst. ; Lanzhou, Inst. Modern Phys. ; Beijing, GUCAS) ; Geissel, Hans (Darmstadt, GSI ; U. Giessen (main)) et al.
/FRS-ESR ; ILIMA ; SPARC ; TBWD,
Highly charged radioactive ions can be stored for extended periods of time in storage rings which allows for precision measurements of their decay modes. The straightforward motivation for performing such studies is that fully ionised nuclei or few-electron ions can be viewed as clean quantum-mechanical systems, in which the interactions of the many electrons can be either excluded or treated precisely. [...]
IOP, 2015 - 17 p.
- Published in : J. Phys. B 48 (2015) 144024
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4.
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5.
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Stellar and thermal neutron capture cross section of $^9$Be
/ Wallner, A (Vienna U. ; Australian Natl. U., Canberra (main)) ; Bichler, M (Vienna, Tech. U., Atominst.) ; Coquard, L (KIT, Karlsruhe) ; Dillmann, I (KIT, Karlsruhe) ; Forstner, O (U. Vienna (main)) ; Golser, R (U. Vienna (main)) ; Heil, M (KIT, Karlsruhe) ; Käppeler, F (KIT, Karlsruhe) ; Kutschera, W (U. Vienna (main)) ; Lederer-Woods, C (Edinburgh U.) et al.
The neutron capture cross section of Be9 for stellar energies was measured via the activation technique using the Karlsruhe Van de Graaff accelerator in combination with accelerator mass spectrometry at the Vienna Environmental Research Accelerator. To characterize the energy region of interest for astrophysical applications, activations were performed in a quasistellar neutron spectrum of kT=25 keV and for a spectrum at En=473±53 keV. [...]
2019 - 11 p.
- Published in : Phys. Rev. C 99 (2019) 015804
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6.
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Measurement and analysis of the $^{241}$Am neutron capture cross section at the n_TOF facility at CERN
/ Mendoza, E (Madrid, CIEMAT) ; Cano-Ott, D (Madrid, CIEMAT) ; Altstadt, S (Goethe U., Frankfurt (main)) ; Andriamonje, S (IRFU, Saclay) ; Andrzejewski, J (Lodz U.) ; Audouin, L (Orsay, IPN) ; Balibrea, J (Madrid, CIEMAT) ; Bécares, V (Madrid, CIEMAT) ; Barbagallo, M (INFN, Bari) ; Bečvář, F (Charles U.) et al.
/n_TOF
The Am241(n,γ) cross section has been measured at the n_TOF facility at CERN with the n_TOF BaF2 Total Absorption Calorimeter in the energy range between 0.2 eV and 10 keV. Our results are analyzed as resolved resonances up to 700 eV, allowing a more detailed description of the cross section than in the current evaluations, which contain resolved resonances only up to 150–160 eV. [...]
2018 - 21 p.
- Published in : Phys. Rev. C 97 (2018) 054616
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7.
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Measurement of the $^{241}$Am neutron capture cross section at the n_TOF facility at CERN
/ Mendoza, E (Madrid, CIEMAT) ; Cano-Ott, D ; Altstadt, S ; Andriamonje, S ; Andrzejewski, J ; Audouin, L ; Balibrea, J ; Bécares, V ; Barbagallo, M ; Bečvář, F et al.
/n_TOF
New neutron cross section measurements of minor actinides have been performed recently in order to reduce the uncertainties in the evaluated data, which is important for the design of advanced nuclear reactors and, in particular, for determining their performance in the transmutation of nuclear waste. We have measured the $^{241} \text{Am(n}, \gamma)$ cross section at the n_TOF facility between 0.2 eV and 10 keV with a BaF$_2$ Total Absorption Calorimeter, and the analysis of the measurement has been recently concluded. [...]
2017 - 4 p.
- Published in : EPJ Web Conf. 146 (2017) 11022
Fulltext: PDF;
In : ND 2016 International Conference on Nuclear Data for Science and Technology, Bruges, Belgium, 11 - 16 Sep 2016, pp.11022
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8.
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Dissemination of data measured at the CERN n_TOF facility
/ Dupont, E (IRFU, Saclay) ; Otuka, N ; Cabellos, O ; Aberle, O (CERN) ; Aerts, G ; Altstadt, S ; Alvarez, H ; Alvarez-Velarde, F ; Andriamonje, S ; Andrzejewski, J et al.
/n_TOF
The n_TOF neutron time-of-flight facility at CERN is used for high quality nuclear data measurements from thermal energy up to hundreds of MeV. In line with the CERN open data policy, the n_TOF Collaboration takes actions to preserve its unique data, facilitate access to them in standardised format, and allow their re-use by a wide community in the fields of nuclear physics, nuclear astrophysics and various nuclear technologies. [...]
2017 - 4 p.
- Published in : EPJ Web Conf. 146 (2017) 07002
Fulltext: PDF; External link: Fulltext
In : ND 2016 International Conference on Nuclear Data for Science and Technology, Bruges, Belgium, 11 - 16 Sep 2016, pp.07002
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9.
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$\beta$-decay half-lives and $\beta$-delayed neutron emission probabilities for several isotopes of Au, Hg, Tl, Pb and Bi, beyond $N=126$
/ Caballero-Folch, R. (Barcelona, Polytechnic U. ; TRIUMF) ; Domingo-Pardo, C. (Valencia U., IFIC) ; Agramunt, J. (Valencia U., IFIC) ; Algora, A. (Valencia U., IFIC ; Debrecen, Inst. Nucl. Res.) ; Ameil, F. (Darmstadt, GSI) ; Ayyad, Y. (U. Santiago de Compostela (main)) ; Benlliure, J. (U. Santiago de Compostela (main)) ; Bowry, M. (Surrey U.) ; Calviño, F. (Barcelona, Polytechnic U.) ; Cano-Ott, D. (Madrid, CIEMAT) et al.
$Background:$ Previous measurements of $\beta$-delayed neutron emitters comprise around 230 nuclei, spanning from the $^{8}$He up to $^{150}$La. Apart from $^{210}$Tl, with a minuscule branching ratio of 0.007\%, no other neutron emitter is measured yet beyond $A=150$. [...]
arXiv:1701.03845.-
2017-06-23 - 16 p.
- Published in : Phys. Rev. C 95 (2017) 064322
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10.
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Accelerator mass spectrometry measurements of the $^{13}C(n,γ)^{14}C$ and $^{14}N(n,p)^{14}C$ cross sections
/ Wallner, A (Australian Natl. U., Canberra ; Vienna U.) ; Bichler, M (Atominstitut) ; Buczak, K (Vienna U.) ; Dillmann, I (Karlsruhe, Forschungszentrum) ; Käppeler, F (Karlsruhe, Forschungszentrum) ; Karakas, A (Res. Sch. Astron. Astrophys., Weston Creek) ; Lederer, C (Vienna U.) ; Lugaro, M (Konkoly Observ.) ; Mair, K (Vienna U.) ; Mengoni, A (CERN) et al.
The technique of accelerator mass spectrometry (AMS), offering a complementary tool for sensitive studies of key reactions in nuclear astrophysics, was applied for measurements of the C13(n,γ)C14 and the N14(n,p)C14 cross sections, which act as a neutron poison in s-process nucleosynthesis. Solid samples were irradiated at Karlsruhe Institute of Technology with neutrons closely resembling a Maxwell-Boltzmann distribution for kT=25 keV, and also at higher energies between En=123 and 182 keV. [...]
2016 - 12 p.
- Published in : Phys. Rev. C 93 (2016) 045803
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