CERN Accelerating science

CERN Document Server Znaleziono 267 rekordów  1 - 10następnykoniec  skocz do rekordu: Szukanie trwało 0.52 sekund. 
1.
Radiative neutron capture cross section of $^{242}$Pu measured at n_TOF-EAR1 in the unresolved resonance region up to 600 keV / n_TOF Collaboration
The design of fast reactors burning MOX fuels requires accurate capture and fission cross sections. [...]
arXiv:2412.01332.
- 20.
Fulltext
2.
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;
3.
$^{74}$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;
4.
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
5.
Dechanneling of high energy particles in a long bent crystal / Scandale, W (CERN) ; Arduini, G (CERN) ; Cerutti, F (CERN) ; Garattini, M (CERN ; Imperial Coll., London) ; Gilardoni, S (CERN) ; Lechner, A (CERN) ; Losito, R (CERN) ; Masi, A (CERN) ; Mirarchi, D (CERN) ; Montesano, S (CERN) et al.
Experimental results on deflection of a 180 GeV/c $\pi^+$-meson beam by a 23 mm long bent silicon crystal are analyzed to study the dechanneling process of particles due to multiple scattering. A new approach for the determination of contributions from atomic nuclei and electrons to the multiple scattering using the experimental data for random crystal orientations is suggested. [...]
2019 - 4 p. - Published in : Nucl. Instrum. Methods Phys. Res., B 438 (2019) 38-41
6.
Feasibility of crystal-assisted collimation in the CERN accelerator complex / UA9 Collaboration
Bent silicon crystals mounted on high-accuracy angular actuators were installed in the CERN Super Proton Synchrotron (SPS) and extensively tested to assess the feasibility of crystal-assisted collimation in circular hadron colliders. The adopted layout was exploited and regularly upgraded for about a decade by the UA9 Collaboration. [...]
2022 - 108 p. - Published in : Int. J. Mod. Phys. A 37 (2022) 2230004 Fulltext from Publisher: PDF;
7.
Multiple scattering of channeled and non-channeled positively charged particles in bent monocrystalline silicon / Scandale, W. (CERN) ; Arduini, G. (CERN) ; Cerutti, F. (CERN) ; Esposito, L.S. (CERN) ; Garattini, M. (CERN) ; Gilardoni, S. (CERN) ; Losito, R. (CERN) ; Masi, A. (CERN) ; Mirarchi, D. (CERN) ; Montesano, S. (CERN) et al.
We present the results of an experimental study of multiple scattering of positively charged high energy particles in bent samples of monocrystalline silicon. This work confirms the recently discovered effect of a strong reduction in the rms multiple scattering angle of particles channeled in the silicon (111) plane. [...]
arXiv:2201.09655.- 2022-07-14 - 18 p. - Published in : Eur. Phys. J. Plus 137 (2022) 811 Fulltext: PDF;
8.
Measurement of the $^{76}\mathrm{Ge}(n,{\gamma})$ cross section at the n_TOF facility at CERN / n_TOF Collaboration
The $^{76}\mathrm{Ge}(n,{\gamma})$ reaction has been measured at the n_TOF facility at CERN via the time-of-flight technique. Neutron capture cross sections on $^{76}$Ge are of interest to a variety of low-background experiments, such as neutrinoless double β decay searches, and to nuclear astrophysics. [...]
2021 - 7 p. - Published in : Phys. Rev. C 104 (2021) 044610 Fulltext: PDF;
9.
Channeling efficiency reduction in high dose neutron irradiated silicon crystals for high energy and high intensity beam collimation and extraction / Scandale, W (CERN) ; D'Andrea, M (CERN) ; Esposito, L S (CERN) ; Garattini, M (CERN ; Imperial Coll., London) ; Guillermain, E (CERN) ; Mirarchi, D (CERN) ; Montesano, S (CERN) ; Natochii, A (CERN ; Orsay, LAL) ; Rossi, R (CERN) ; I Smirnov, G (CERN ; Dubna, JINR) et al.
The channeling process in bent silicon crystals are used since '70s to manipulate beams of high energy particles. During the last decade, several studies and experiments carried out by the UA9 Collaboration at CERN demonstrated the possibility to use bent crystals for beam collimation, extraction, focusing and splitting in particle accelerators. [...]
2021 - 11 p. - Published in : JINST 16 (2021) P08015 Fulltext: PDF;
10.
Measurement of the $^{242}$Pu(n,$\gamma$) cross section from thermal to 500 keV at the Budapest research reactor and CERN n_TOF-EAR1 facilities / n_TOF Collaboration
The design and operation of innovative nuclear systems requires a better knowledge of the capture and fission cross sections of the Pu isotopes. For the case of capture on $^{242}$Pu, a reduction of the uncertainty in the fast region down to 8-12% is required. [...]
2020 - 6 p. - Published in : EPJ Web Conf. 239 (2020) 01019 fulltext from publisher: PDF;
In : International Conference on Nuclear Data for Science and Technology (ND 2019), Beijing, China, 19 - 24 May 2019, pp.01019

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