recid:2913178 - Αποτελέσματα αναζήτησης

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CERN Document Server	2,050 εγγραφές βρέθηκαν 1 - 10 μετάβαση στην εγγραφή:	Η έρευνα πήρε 0.90 δευτερόλεπτα.

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Shedding Light on the Origin of Pb204, the Heaviest s-Process–Only Isotope in the Solar System / n_TOF Collaboration
Asymptotic giant branch stars are responsible for the production of most of the heavy isotopes beyond Sr observed in the solar system. Among them, isotopes shielded from the r-process contribution by their stable isobars are defined as s-only nuclei. [...]
2024 - 8 p. - Published in : Phys. Rev. Lett. 133 (2024) 052702 Fulltext: PDF;

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(91)

$^{74}$Ge($n,\gamma $) cross section below 70 keV measured at n_TOF CERN / n_TOF Collaboration
Neutron capture reaction cross sections on $^{74}$Ge are of importance to determine $^{74}$Ge production during the astrophysical slow neutron capture process. We present new resonance data on $^{74}$Ge($n,\gamma $) reactions below 70 keV neutron energy. [...]
2022 - 9 p. - Published in : Eur. Phys. J. A 58 (2022) 239 Fulltext: PDF;

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(65)

The CERN n TOF NEAR station for astrophysics- and application-related neutron activation measurements / n_TOF Collaboration
A new experimental area, the NEAR station, has recently been built at the CERN n TOF facility, at a short distance from the spallation target (1.5 m). [...]
arXiv:2209.04443. - 11 p.
Fulltext

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(63)

A Segmented Total Energy Detector (sTED) optimized for $(n,\gamma)$ cross-section measurements at n_TOF EAR2 / n_TOF Collaboration
The neutron time-of-flight facility n_TOF at CERN is a spallation source dedicated to measurements of neutron-induced reaction cross-sections of interest in nuclear technologies, astrophysics, and other applications. Since 2014, Experimental ARea 2 (EAR2) is operational and delivers a neutron fluence of $4\times 10^7$ neutrons per nominal proton pulse, which is 50 times higher than the one of Experimental ARea 1 (EAR1) of $8\times10^5$ neutrons per pulse. [...]
arXiv:2403.09759.- 2024-01-09 - 14 p. - Published in : Radiat. Phys. Chem. 217 (2024) 111525 Fulltext: 2403.09759 - PDF; Publication - PDF;

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(57)

Advances and new ideas for neutron-capture astrophysics experiments at CERN n_TOF / n_TOF Collaboration
This article presents a few selected developments and future ideas related to the measurement of $(n,\gamma)$ data of astrophysical interest at CERN n_TOF. The MC-aided analysis methodology for the use of low-efficiency radiation detectors in time-of-flight neutron-capture measurements is discussed, with particular emphasis on the systematic accuracy. [...]
arXiv:2208.02163.- 2023-01-26 - 11 p. - Published in : Eur. Phys. J. A 59 (2023) 8 Fulltext: document - PDF; Publication - PDF; 2208.02163 - PDF;

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(57)

Recent highlights and prospects on (n,$\gamma$) measurements at the CERN n_TOF facility / n_TOF Collaboration
Neutron capture cross-section measurements are fundamental in the study of the slow neutron capture (s-) process of nucleosynthesis and for the development of innovative nuclear technologies. [...]
arXiv:2310.15714. - 7 p.
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(57)

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. These measurements can shed light on existing discrepancies between observed and predicted isotopic abundances and help to constrain the physical conditions where these reactions take place along different stages of stellar evolution.In the particular case of the radioactive $^{94}$Nb, the $^{94}$Nb($n$,$\gamma$) cross-section could play a role in the determination of the $s$-process production of $^{94}$Mo in AGB stars, which presently cannot be reproduced by state-of-the-art stellar models. [...]
arXiv:2301.11199.- 2023 - 8 p.
- Published in : EPJ Web Conf.: 279 (2023) , pp. 06004 Fulltext: 2301.11199 - PDF; document - PDF; Publication - PDF;
In : 10th Conference on Nuclear Physics in Astrophysics (NPA-X 2022), CERN, Geneva, Switzerland, 4 - 9 Sep 2022, pp.06004

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(50)

Measurement of the $^{14}$N(n,p)$^{14}$C cross section at the CERN n_TOF facility from sub-thermal energy to 800 keV / n_TOF Collaboration
Background: The $^{14}$N(n,p)$^{14}$C reaction is of interest in neutron capture therapy, where nitrogen-related dose is the main component due to low-energy neutrons, and in astrophysics, where 14N acts as a neutron poison in the s-process. Several discrepancies remain between the existing data obtained in partial energy ranges: thermal energy, keV region and resonance region. [...]
arXiv:2212.05128.- 2023-06-29 - 15 p. - Published in : Phys. Rev. C 107 (2023) 064617 Fulltext: 2212.05128 - PDF; Publication - PDF;

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(41)

Measurement and analysis of the $^{246}$Cm and $^{248}$Cm neutron capture cross-sections at the EAR2 of the n TOF facility / n_TOF Collaboration
The $^{246}$Cm(n,$\gamma$) and $^{248}$Cm(n,$\gamma$) cross-sections have been measured at the Experimental Area 2 (EAR2) of the n_TOF facility at CERN with three C$_6$D$_6$ detectors. This measurement is part of a collective effort to improve the capture cross-section data for Minor Actinides (MAs), which are required to estimate the production and transmutation rates of these isotopes in light water reactors and innovative reactor systems. [...]
arXiv:2407.06377.- 2024-12-10 - 20 p. - Published in : Eur. Phys. J. A 60 (2024) 246 Fulltext: 2407.06377 - PDF; document - PDF;

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Measurement of the prompt fission $\gamma $-rays from slow neutron-induced fission of $^{235}$U with STEFF / n_TOF Collaboration
The average energy and multiplicity of prompt $\gamma $-rays from slow neutron-induced fission of $^{235}$U have been measured using the STEFF spectrometer at the neutron time-of-flight facility n_TOF. The individual responses from 11 NaI scintillators were corrected for multiple $\gamma $-ray interactions, prompt fission neutrons and background counts before being deconvolved to estimate the emitted spectrum of prompt fission $\gamma $-rays. [...]
2024 - 11 p. - Published in : Eur. Phys. J. A 60 (2024) 70 Fulltext: PDF;

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