Publications (43)
Constant-temperature level densities in the quasi-continuum of Th and U isotopes
M. Guttormsen, B. Jurado, J. N. Wilson +16
Particle-gamma coincidences have been measured to obtain gamma-ray spectra as a function of excitation energy for 231-233Th and 237-239U. The level densities, which were extracted…
Study of the 238U(d,p) surrogate reaction via the simultaneous measurement of gamma-decay and fission probabilities
Q. Ducasse, B. Jurado, M. Aïche +26
We investigated the 238U(d,p) reaction as a surrogate for the n + 238U reaction. For this purpose we measured for the first time the gamma-decay and fission probabilities of 239U*…
Imaging neutron capture cross sections: i-TED proof-of-concept and future prospects based on Machine-Learning techniques
V. Babiano-Suárez, J. Lerendegui-Marco, J. Balibrea-Correa +132
i-TED is an innovative detection system which exploits Compton imaging techniques to achieve a superior signal-to-background ratio in () cross-section measurements using time…
Pulse processing routines for neutron time-of-flight data
P. Žugec, C. WeiÃ, C. Guerrero +11
A pulse shape analysis framework is described, which was developed for n_TOF-Phase3, the third phase in the operation of the n_TOF facility at CERN. The most notable feature of thi…
New developments in Micromegas Microbulk detectors
F. J. Iguaz, S. Andriamonje, F. Belloni +15
A new Micromegas manufacturing technique, based on kapton etching technology, has been recently developed, improving the uniformity and stability of this kind of readouts. Excellen…
High accuracy, high resolution 235U(n,f) cross section from n_TOF (CERN) in the thermal to 10 keV energy range
TOF collaboration, M. Mastromarco, S. Amaducci +119
The 235U(n,f) cross section was measured in a wide energy range (25 meV - 170 keV) at the n_TOF facility at CERN, relative to 6Li(n,t) and 10B(n,alpha) standard reactions, with hig…
The CERN n TOF NEAR station for astrophysics- and application-related neutron activation measurements
N. Patronis, A. Mengoni, N. Colonna +130
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). The new area, characterized b…
Neutron capture cross section measurement of 238U at the n TOF CERN facility with C6D6 scintillation detectors in the energy region from 1 eV to 700 keV
TOF Collaboration, F. Mingrone, C. Massimi +102
The aim of this work is to provide a precise and accurate measurement of the 238U(n,g) reaction cross section in the energy region from 1 eV to 700 keV. This reaction is of fundame…
Calibration of nuclear recoils at the 100 eV scale using neutron capture
L. Thulliez, D. Lhuillier, F. Cappella +34
The development of low-threshold detectors for the study of coherent elastic neutrino-nucleus scattering and for the search for light dark matter necessitates methods of low-energy…
GEANT4 simulation of the neutron background of the CD set-up for capture studies at n_TOF
TOF collaboration, P. Žugec, N. Colonna +104
The neutron sensitivity of the CD detector setup used at n_TOF for capture measurements has been studied by means of detailed GEANT4 simulations. A realistic software repli…
The Be()Li reaction and the Cosmological Lithium Problem: measurement of the cross section in a wide energy range at n_TOF (CERN)
L. Damone, M. Barbagallo, M. Mastromarco +155
We report on the measurement of the Be()Li cross section from thermal to approximately 325 keV neutron energy, performed in the high-flux experimental area (EAR2)…
Measurement and analysis of the Am-243 neutron capture cross section at the n_TOF facility at CERN
TOF Collaboration, E. Mendoza, D. Cano-Ott +129
Background:The design of new nuclear reactors and transmutation devices requires to reduce the present neutron cross section uncertainties of minor actinides. Purpose: Reduce the $…
Measurement of the C(n,p) and C(n,d) reactions from n_TOF at CERN
P. Žugec, N. Colonna, D. Rochman +129
The energy dependence of the cross section of the (n,p) and (n,d) reactions on C has been studied for the first time at the n_TOF facility at CERN, from the particle d…
Observation of a nuclear recoil peak at the 100 eV scale induced by neutron capture
CRAB Collaboration, NUCLEUS Collaboration, H. Abele +75
Coherent elastic neutrino-nucleus scattering and low-mass Dark Matter detectors rely crucially on the understanding of their response to nuclear recoils. We report the first observ…
First Nb() Measurement: Constraining the Nucleosynthetic Origin of Mo in Presolar Grains
J. Balibrea-Correa, J. Lerendegui-Marco, C. Domingo-Pardo +136
Isotopic measurements of presolar silicon carbide grains from dying stars have revealed a puzzling overabundance of Mo that stellar nucleosynthesis models have failed to rep…
Measurement of the C()B cross section at n_TOF (CERN) by in-beam activation analysis
P. Žugec, N. Colonna, D. Bosnar +101
The integral cross section of the C()B reaction has been determined for the first time in the neutron energy range from threshold to several GeV at the n_TOF fac…
Pushing the high count rate limits of scintillation detectors for challenging neutron-capture experiments
J. Balibrea Correa, J. Lerendegui-Marco, V. Babiano-Suarez +131
One of the critical aspects for the accurate determination of neutron capture cross sections when combining time-of-flight and total energy detector techniques is the characterizat…
Scissors resonance in the quasi-continuum of Th, Pa and U isotopes
M. Guttormsen, L. A. Bernstein, A. Görgen +16
The gamma-ray strength function in the quasi-continuum has been measured for 231-233Th, 232,233Pa and 237-239U using the Oslo method. All eight nuclei show a pronounced increase in…
Advances and new ideas for neutron-capture astrophysics experiments at CERN n_TOF
C. Domingo-Pardo, V. Babiano-Suarez, J. Balibrea-Correa +136
This article presents a few selected developments and future ideas related to the measurement of data of astrophysical interest at CERN n_TOF. The MC-aided analysis method…
High accuracy determination of the U/U fission cross section ratio up to 1 GeV at n_TOF (CERN)
C. Paradela, M. Calviani, D. TarrÃo +104
The U to U fission cross section ratio has been determined at n_TOF up to 1 GeV, with two different detection systems, in different geometrical configurations…
Integral measurement of the C(n,p)B reaction up to 10 GeV
P. Žugec, N. Colonna, D. Bosnar +102
The integral measurement of the C(n,p)B reaction was performed at the neutron time of flight facility n_TOF at CERN. The total number of B nuclei produced per…
Energy-differential measurement of the C(n,p) and C(n,d) reactions at the n_TOF facility at CERN
P. Žugec, N. Colonna, D. Rochman +129
Energy-differential cross section of the C(n,p) and C(n,d) reactions was measured at the neutron time of flight facility n_TOF at CERN. The measur…
Measurement of the 235U(n,f) cross section relative to the 6Li(n,t) and 10B(n,alpha) standards from thermal to 170 keV neutron energy range at n_TOF
S. Amaducci, L. Cosentino, M. Barbagallo +118
The 235U(n,f) cross section was measured in a wide energy range at n_TOF relative to 6Li(n,t) and 10B(n,alpha), with high resolution and in a wide energy range, with a setup based…
Experimental level densities of atomic nuclei
M. Guttormsen, M. Aiche, F. L. Bello Garrote +24
It is almost 80 years since Hans Bethe described the level density as a non-interacting gas of protons and neutrons. In all these years, experimental data were interpreted within t…
Study of collision and -cascade times following neutron-capture processes in cryogenic detectors
CRAB collaboration, G. Soum-Sidikov, H. Abele +47
The emission of -rays after a neutron capture in a cryogenic detector can generate mono-energetic nuclear recoils in the sub-keV regime, of direct interest for the calibration…
Experimental setup and procedure for the measurement of the 7Be(n,p)7Li reaction at n_TOF
M. Barbagallo, J. Andrzejewski, M. Mastromarco +125
Following the completion of the second neutron beam line and the related experimental area (EAR2) at the n_TOF spallation neutron source at CERN, several experiments were planned a…
Towards a new generation of solid total-energy detectors for neutron-capture time-of-flight experiments with intense neutron beams
J. Balibrea-Correa, V. Babiano-Suarez, J. Lerendegui-Marco +134
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,…
An improved method for estimating the neutron background in measurements of neutron capture reactions
P. Žugec, D. Bosnar, N. Colonna +1
The relation between the neutron background in neutron capture measurements and the neutron sensitivity related to the experimental setup is examined. It is pointed out that a prop…
Unrecognized Sources of Uncertainties (USU) in Experimental Nuclear Data
R. Capote, S. Badikov, A. Carlson +8
Evaluated nuclear data uncertainties are often perceived as unrealistic, most often because they are thought to be too small. The impact of this issue in applied nuclear science ha…
Experimental neutron capture data of Ni from the CERN n_TOF facility
TOF collaboration, P. Žugec, M. Barbagallo +99
The Ni cross section has been measured at the neutron time of flight facility n_TOF at CERN, in the energy range from 27 meV up to 400 keV. In total, 51 resonances…
Measurement and analysis of the Cm and Cm neutron capture cross-sections at the EAR2 of the n TOF facility
V. Alcayne, A. Kimura, E. Mendoza +130
The Cm(n,) and Cm(n,) cross-sections have been measured at the Experimental Area 2 (EAR2) of the n_TOF facility at CERN with three CD detectors. Thi…
Monte Carlo simulations of γ-directional correlations and their application on FIFRELIN cascades
A. Chalil, T. Materna, O. Litaize +2
Angular distribution and correlation measurements are an essential part in nuclear structure experiments, especially when spectroscopic information of a specific nucleus is unknown…
Neutron capture measurements for s-process nucleosynthesis; A review about CERN n_TOF developments and contributions
C. Domingo-Pardo, O. Aberle, V. Alcayne +143
This article presents a review about the main CERN n\_TOF contributions to the field of neutron-capture experiments of interest for -process nucleosynthesis studies over the las…
First measurement of the Nb(,) cross section at the CERN n\_TOF facility
J. Balibrea-Correa, V. Babiano-Suarez, J. Lerendegui-Marco +134
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 -,…
Radiative neutron capture cross section of Pu measured at n_TOF-EAR1 in the unresolved resonance region up to 600 keV
J. Lerendegui-Marco, C. Guerrero, E. Mendoza +133
Accurate neutron capture cross sections are essential for the design and operation of fast reactors using MOX fuels. For Pu, the Nuclear Energy Agency (NEA) recommends 8--1…
Observation of large scissors resonance strength in actinides
M. Guttormsen, L. A. Bernstein, A. Bürger +8
The orbital M1-scissors resonance (SR) has been measured for the first time in the quasi-continuum of actinides. Particle-gamma coincidences are recorded with deuteron and 3He indu…
Ni() and Ni() cross sections measured at n_TOF/CERN
C. Lederer, C. Massimi, E. Berthoumieux +112
The cross section of the Ni() reaction was measured with the time-of-flight technique at the neutron time-of-flight facility n_TOF at CERN. Capture kernels of 42 reson…
Neutron capture cross section of unstable 63Ni: implications for stellar nucleosynthesis
C. Lederer, C. Massimi, S. Altstadt +102
The Ni() cross section has been measured for the first time at the neutron time-of-flight facility n\_TOF at CERN from thermal neutron energies up to 200 keV. In tota…
The Be(n,p)Li reaction and the Cosmological Lithium Problem: measurement of the cross section in a wide energy range at n_TOF (CERN)
L. Damone, M. Barbagallo, M. Mastromarco +155
We report on the measurement of the Be()Li cross section from thermal to approximately 325 keV neutron energy, performed in the high-flux experimental area (EAR2)…
Measurement of the N(n,p)C cross section at the CERN n_TOF facility from sub-thermal energy to 800 keV
P. Torres-Sánchez, J. Praena, I. Porras +129
Background: The N(n,p)C reaction is of interest in neutron capture therapy, where nitrogen-related dose is the main component due to low-energy neutrons, and in astro…
Cross section measurements of Gd(n,) induced by thermal and epithermal neutrons
M. Mastromarco, A. Manna, O. Aberle +121
Neutron capture measurements on Gd and Gd were performed using the time-of-flight technique at the n\_TOF facility at CERN. Four samples in form of self-sustaining…
Review and new concepts for neutron-capture measurements of astrophysical interest
C. Domingo-Pardo, V. Babiano-Suarez, J. Balibrea-Correa +128
The idea of slow-neutron capture nucleosynthesis formulated in 1957 triggered a tremendous experimental effort in different laboratories worldwide to measure the relevant nuclear p…
Experimental setup and procedure for the measurement of the 7Be(n,α)α reaction at n_TOF
L. Cosentino, A. Musumarra, M. Barbagallo +129
The newly built second experimental area EAR2 of the n_TOF spallation neutron source at CERN allows to perform (n, charged particles) experiments on short-lived highly radioactive…