CERN Accelerating science

CERN Document Server 2,041 записей найдено  1 - 10следующийконец  перейти к записи: Поиск длился 0.25 секунд. 
1.
Development of new solid-state total-energy detectors for neutron-capture measurements at CERN n\_TOF / Aberle, O (European Organization for Nuclear Research (CERN), Switzerland) ; Alcayne, V (Centro de Investigaciones Energ\'{e}ticas Medioambientales y Tecnol\'{o}gicas (CIEMAT), Spain) ; Bacak, M (European Organization for Nuclear Research (CERN), Switzerland) ; Balibrea-Correa, J (Instituto de F\'{\i}sica Corpuscular, CSIC - Universidad de Valencia, Spain) ; Colonna, N (Instituto Nazionale di Fisica Nucleare, Sezione di Bari, Italy) ; Cano-Ott, D (Centro de Investigaciones Energ\'{e}ticas Medioambientales y Tecnol\'{o}gicas (CIEMAT), Spain) ; Casanovas, A (Universitat Polit\`{e}cnica de Catalunya, Spain) ; Domingo-Pardo, C (Instituto de F\'{\i}sica Corpuscular, CSIC - Universidad de Valencia, Spain) ; Fjeld, O (European Organization for Nuclear Research (CERN), Switzerland) ; Gunsing, F (CEA Irfu, Universit\'{e} Paris-Saclay, F-91191 Gif-sur-Yvette, France) et al.
CERN-INTC-2023-034 ; INTC-I-254.
- 2023.
Fulltext
2.
Measurement of the radiation background at the n\_TOF NEAR facility to study the feasibility of cyclic activation experiments / Lerendegui-Marco, Jorge (Instituto de Física Corpuscular, CSIC - Universidad de Valencia, Spain.) ; Bacak, Michael (European Organization for Nuclear Research (CERN), Switzerland.) ; Alcayne, Víctor (Centro de Investigaciones Energ ́eticas, Medioambientales y Tecnol ́ogicas (CIEMAT), Spain) ; Cano-Ott, Daniel (Centro de Investigaciones Energ ́eticas, Medioambientales y Tecnol ́ogicas (CIEMAT), Spain) ; Casanovas, Adrià (Universitat Polit`ecnica de Catalunya, Spain) ; Cortés, Guillem (Universitat Polit`ecnica de Catalunya, Spain) ; Domingo-Pardo, César (Instituto de Física Corpuscular, CSIC - Universidad de Valencia, Spain.) ; Guerrero, Carlos (Universidad de Sevilla, Spain) ; Manna, Alice (Istituto Nazionale di Fisica Nucleare, Sezione di Bologna, Italy; Dipartimento di Fisica e Astronomia, Universit`a di Bologna, Italy,) ; Massimi, Cristian (Istituto Nazionale di Fisica Nucleare, Sezione di Bologna, Italy; Dipartimento di Fisica e Astronomia, Universit`a di Bologna, Italy,) et al.
CERN-INTC-2022-018 ; INTC-I-241.
- 2022.
Fulltext
3.
High precision $^{209}$Bi($n$,$\gamma$) cross section measurement at n_TOF EAR2 / Balibrea-Correa, Javier (Instituto de Física Corpuscular, CSIC - Universidad de Valencia, Spain) ; Domingo-Pardo, César (Instituto de Física Corpuscular, CSIC - Universidad de Valencia, Spain) ; de la Fuente, Gabriel (Instituto de Física Corpuscular, CSIC - Universidad de Valencia, Spain) ; Lerendegui-Marco, Jorge (Instituto de Física Corpuscular, CSIC - Universidad de Valencia, Spain) ; Gameiro, Bernardo (Instituto de Física Corpuscular, CSIC - Universidad de Valencia, Spain) ; Tarifeño-Saldivia, Ariel (Instituto de Física Corpuscular, CSIC - Universidad de Valencia, Spain) ; Babiano-Suárez, Victor (Universitat de València, Spain) ; Calviño, Francisco (Universitat Politècnica de Catalunya, Spain) ; Casanovas, Adrià (Universitat Politècnica de Catalunya, Spain) ; Cortes, Guillem (Universitat Politècnica de Catalunya, Spain) et al.
CERN-INTC-2023-061 ; INTC-P-675.
- 2023.
Fulltext
4.
Neutron spectroscopy of $^{26}$Mg states: constraining the stellar neutron source $^{22}$Ne($\alpha, n$)$^{25}$Mg / Massimi, C. (INFN, Bologna ; Bologna U.) ; Altstadt, S. (Frankfurt U.) ; Andrzejewski, J. (Lodz U.) ; Audouin, L. (Orsay, IPN) ; Barbagallo, M. (INFN, Bari) ; Bécares, V. (Madrid, CIEMAT) ; Bečvář, F. (Charles U.) ; Belloni, F. (IRFU, Saclay) ; Berthoumieux, E. (IRFU, Saclay) ; Billowes, J. (Manchester U.) et al. /n_TOF
This work reports on accurate, high-resolution measurements of the $^{25}$Mg($n, \gamma$)$^{26}$Mg and $^{25}$Mg($n, tot$) cross sections in the neutron energy range from thermal to about 300 keV, leading to a significantly improved $^{25}$Mg($n, \gamma$)$^{26}$Mg parametrization. The relevant resonances for $n+^{25}$Mg were characterized from a combined R-matrix analysis of the experimental data. [...]
arXiv:1702.04520.- 2017-05-10 - 6 p. - Published in : Phys. Lett. B 768 (2017) 1–6 Article from SCOAP3: PDF; Fulltext: PDF;
5.
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;
6.
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;
7.
Review and new concepts for neutron-capture measurements of astrophysical interest / n_TOF Collaboration
The idea of slow-neutron capture nucleosynthesis formulated in 1957 triggered a tremendous experimental effort in different laboratories worldwide to measure the relevant nuclear physics input quantities, namely ($n,\gamma$) cross sections over the stellar temperature range (from few eV up to several hundred keV) for most of the isotopes involved from Fe up to Bi. A brief historical review focused on total energy detectors will be presented to illustrate how, advances in instrumentation have led, over the years, to the assessment and discovery of many new aspects of $s$-process nucleosynthesis and to the progressive refinement of theoretical models of stellar evolution. [...]
arXiv:1911.06972.- 2020 - 14 p. - Published in : J. Phys.: Conf. Ser. Fulltext: PDF; Fulltext from publisher: PDF;
In : 9th Nuclear Physics in Astrophysics, Frankfurt, Germany, 15 - 20 Sep 2019, pp.012027
8.
Towards a new generation of solid total-energy detectors for neutron-capture time-of-flight experiments with intense neutron beams / Balibrea-Correa, J. (Valencia U. ; Valencia U., IFIC) ; Babiano-Suarez, V. (Valencia U. ; Barcelona, Polytechnic U.) ; Lerendegui-Marco, J. (Valencia U. ; Valencia U., IFIC) ; Domingo-Pardo, C. (Valencia U. ; Valencia U., IFIC) ; Ladarescu, I. (Valencia U. ; Valencia U., IFIC) ; Tarifeño-Saldivia, A. (Valencia U. ; Valencia U., IFIC) ; de la Fuente-Rosales, G. (Valencia U. ; Valencia U., IFIC) ; Gameiro, B. (Valencia U. ; Valencia U., IFIC) ; Zaitseva, N. (LLNL, Livermore) ; Alcayne, V. (Madrid, CIEMAT) et al.
Challenging neutron-capture cross-section measurements of small cross sections and samples with a very limited number of atoms require high-flux time-of-flight facilities. In turn, such facilities need innovative detection setups that are fast, have low sensitivity to neutrons, can quickly recover from the so-called $\gamma$-flash, and offer the highest possible detection sensitivity. [...]
arXiv:2411.18969.- 2024-11-30 - 24 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 1072 (2025) 170110 Fulltext: Publication - PDF; 2411.18969 - PDF;
9.
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.
Fulltext
10.
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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