# CERN Accelerating science

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# n_TOF Conference Contributions

Ostatnio dodane:
2023-03-17
04:31
 New perspectives for neutron capture measurements in the upgraded CERN-n_TOF Facility / Lerendegui-Marco, J. ; Casanovas, A. ; Alcayne, V. The n_TOF facility has just undergone in 2021 a major upgrade with the installation of its third generation spallation target that has been designed to optimize the performance of the two n_TOF time-of-flight lines. [...] arXiv:2303.08724. - 6 p. Fulltext

2023-03-17
04:29
 New detection systems for an enhanced sensitivity in key stellar (n,$\gamma$) measurements / n_TOF Collaboration Neutron capture cross-section measurements are fundamental in the study of astrophysical phenomena, such as the slow neutron capture (s-) process of nucleosynthesis operating in red-giant and massive stars. [...] arXiv:2303.08701. - 7 p. Fulltext

2023-01-28
06:02
 First measurement of the $^{94}$Nb($n$,$\gamma$) cross section at the CERN n_TOF facility / n_TOF Collaboration One of the crucial ingredients for the improvement of stellar models is the accurate knowledge of neutron capture cross-sections for the different isotopes involved in the $s$-,$r$- and $i$- processes. [...] arXiv:2301.11199. - 8 p. Fulltext

2022-10-13
06:22
 Characterization and First Test of an i-TED Prototype at CERN n_TOF / Babiano-Suarez, V (Valencia U., IFIC) ; Caballero, L (Valencia U., IFIC) ; Domingo-Pardo, C (Valencia U., IFIC) ; Ladarescu, I (Valencia U., IFIC) ; Aberle, O (CERN) ; Alcayne, V (Madrid, CIEMAT) ; Amaducci, S (INFN, Catania) ; Andrzejewski, J (Lodz U.) ; Audouin, L (Orsay, IPN) ; Bacak, M (CERN ; TU Vienna) et al. Neutron capture cross section measurements are of fundamental importance for the study of the slow process of neutron capture, so called s-process. This mechanism is responsible for the formation of most elements heavier than iron in the Universe. [...] 2019 - 5 p. - Published in : Springer Proc. Phys. 225 (2019) 169-173 In : La Rábida 2018 International Scientific Meeting on Nuclear Physics, La Rábida, Spain, 18 - 22 Jun 2018, pp.169-173

2022-10-13
06:22
 Development of an Ionization Chamber for the Measurement of the$^{16}$ O(n, ${\alpha }$ )$^{13}$ C Cross-Section at the CERN n_TOF Facility / Urlass, Sebastian (TU, Dresden (main) ; HZDR, Dresden ; CERN) ; Junghans, Arnd R (HZDR, Dresden ; CERN) ; Hartmann, Andreas (HZDR, Dresden) ; Mingrone, Federica (CERN) ; Sobiella, Manfred (HZDR, Dresden) ; Stach, Daniel (HZDR, Dresden) ; Tassan-Got, Laurent (CERN) ; Weinberger, David (HZDR, Dresden) /n_TOF Collaboration The$^{16}$ O(n,  ${\alpha }$ )$^{13}$ C reaction, as the inverse reaction of the astrophysically important$^{13}$ C( ${\alpha }$ , n)$^{16}$ O reaction, is proposed to be measured at the neutron time-of-flight (n_TOF) facility of CERN. To this purpose, a Double Frisch Grid Ionization Chamber (DFGIC) containing the oxygen atoms as a component in the counting gas has been developed and a prototype was constructed at Helmholtz-Zentrum Dresden-Rossendorf(HZDR), in Germany. [...] 2019 - 4 p. - Published in : Springer Proc. Phys. 219 (2019) 457-460 In : Nuclei in the Cosmos XV (NIC XV), Assergi, Italy, 24 - 29 Jun 2018, pp.457-460

2022-10-13
06:22
 $^{7}$ Be(n,p)$^{7}$ Li Cross Section Measurement for the Cosmological Lithium Problem at the n $\_$ TOF Facility at CERN / n_TOF Collaboration One of the most puzzling problems in Nuclear Astrophysics is the “Cosmological Lithium Problem”, i.e the discrepancy between the primordial abundance of$^{7}$ Li observed in metal poor halo stars (Asplund et al. in Astrophys J 644:229–259, 2006, [1]), and the one predicted by Big Bang Nucleosynthesis (BBN). [...] 2019 - 8 p. - Published in : Springer Proc. Phys. 219 (2019) 25-32 In : Nuclei in the Cosmos XV (NIC XV), Assergi, Italy, 24 - 29 Jun 2018, pp.25-32

2022-10-13
06:22
 Data for the s Process from n_TOF / n_TOF Collaboration A considerable amount of (n, $\gamma$ ) reactions has been studied, so far, at the neutron time-of-flight facility n_TOF at CERN. The experimental program aims at determining and improving cross sections for a number of isotopes relevant to s-process nucleosynthesis. [...] 2019 - 8 p. - Published in : Springer Proc. Phys. 219 (2019) 63-70 In : Nuclei in the Cosmos XV (NIC XV), Assergi, Italy, 24 - 29 Jun 2018, pp.63-70

2022-10-13
06:22
 Measurement of the $^{244}$ Cm and $^{246}$ Cm Neutron-Induced Cross Sections at the n_TOF Facility / Alcayne, V (Madrid, CIEMAT) ; Kimura, A (JAERI, Tokai) ; Mendoza, E (Madrid, CIEMAT) ; Cano-Ott, D (Madrid, CIEMAT) ; Aberle, O (CERN) ; Amaducci, S (INFN, Catania) ; Andrzejewski, J (Lodz U.) ; Audouin, L (Orsay, IPN) ; Babiano-Suarez, V (Valencia U., IFIC) ; Bacak, M (CERN ; Vienna, Tech. U.) et al. The neutron capture reactions of the$^{244}$ Cm and$^{246}$ Cm isotopes open the path for the formation of heavier Cm isotopes and of heavier elements such as Bk and Cf in a nuclear reactor. In addition, both isotopes belong to the minor actinides with a large contribution to the decay heat and to the neutron emission in irradiated fuels proposed for the transmutation of nuclear waste and fast critical reactors. [...] 2019 - 6 p. - Published in : Springer Proc. Phys. 225 (2019) 117-122 In : La Rábida 2018 International Scientific Meeting on Nuclear Physics, La Rábida, Spain, 18 - 22 Jun 2018, pp.117-122

2022-10-08
06:19
 Exploring neutron channel solutions at CERN/n_TOF for the Cosmological Lithium Problem / Mengoni, A (ENEA, Bologna ; INFN, Bologna) ; Damone, L A (INFN, Bari ; Bari U.) ; Barbagallo, M (INFN, Bari ; CERN) ; Mastromarco, M (INFN, Bari ; CERN) ; Cosentino, L (INFN, Catania) ; Kappeler, F (KIT, Karlsruhe, IKP) ; Colonna, N (INFN, Bari) ; Finocchiaro, P (INFN, Catania) /n_TOF Collaboration New measurements of the $^7$Be$(n, \alpha)$ $^4$He and $^7$Be$(n, p)$ $^7$Li reaction cross sections from thermal to keV neutron energies have been performed at CERN/n TOF. High purity $^7$Be material was produced at the Paul Scherrer Institute (PSI) and implanted at CERN/ISOLDE, demonstrating the feasibility of neutron measurements on samples produced at radioactive beam facilities. [...] 2019 - 4 p. - Published in : Nuovo Cimento C 42 (2019) 120 Fulltext: PDF; In : European Nuclear Physics Conference 2018, Bologna, Italy, 2 - 7 Sep 2018, pp.120

2022-07-27
06:03
 Radiative Neutron Capture Cross-Section Measurement of Ge Isotopes at n_TOF CERN Facility and Its Importance for Stellar Nucleosynthesis / n_TOF Collaboration This manuscript summarizes the results of radiative neutron capture cross-section measurements on two stable germanium isotopes, $^{70}$Ge and $^{73}$Ge. Experiments were performed at the n_TOF facility at CERN via the time-of-flight technique, over a wide neutron energy range, for all stable germanium isotopes (70,72,73,74, and 76). [...] 2021 - 6 p. - Published in : Acta Phys. Pol. A 139 (2021) 383-388 Fulltext: PDF; In : 46th Extraordinary Congress of the Polish Physical Society, Warsaw, Poland, 16 - 18 Oct 2020, pp.383-388