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A direct measurement of the 17O(α,γ)21Ne reaction in inverse kinematics and its impact on heavy element production (2019)
Journal Article
Taggart, M. P., Akers, C., Laird, A. M., Hager, U., Ruiz, C., Hutcheon, D. A., …Williams, M. (2019). A direct measurement of the 17O(α,γ)21Ne reaction in inverse kinematics and its impact on heavy element production. Physics letters. B, 798, https://doi.org/10.1016/j.physletb.2019.134894

© 2019 The Authors During the slow neutron capture process in massive stars, reactions on light elements can both produce and absorb neutrons thereby influencing the final heavy element abundances. At low metallicities, the high neutron capture rate... Read More

NuGrid stellar data set - III. Updated low-mass AGB models and s-process nucleosynthesis with metallicities Z=0.01, Z=0.02 and Z=0.03 (2019)
Journal Article
Battino, U., Tattersall, A., Lederer-Woods, C., Herwig, F., Denissenkov, P., Hirschi, R., …Pignatari, M. (2019). NuGrid stellar data set - III. Updated low-mass AGB models and s-process nucleosynthesis with metallicities Z=0.01, Z=0.02 and Z=0.03. Monthly notices of the Royal Astronomical Society, 489(1), 1082–1098. https://doi.org/10.1093/mnras/stz2158

The production of the neutron-capture isotopes beyond iron that we observe today in the solar system is the result of the combined contribution of the r-process, the s-process and possibly the i-process. Low-mass AGB (1.5 < M/M⊙ < 3) and massive (M >... Read More

Neutron star mergers might not be the only source of r-process elements in the Milky Way (2019)
Journal Article
Côté, B., Eichler, M., Arcones, A., Hansen, C. J., Simonetti, P., Frebel, A., …Matteucci, F. (2019). Neutron star mergers might not be the only source of r-process elements in the Milky Way. The Astrophysical journal, 875(2), 106. https://doi.org/10.3847/1538-4357/ab10db

Probing the origin of r-process elements in the universe represents a multidisciplinary challenge. We review the observational evidence that probes the properties of r-process sites, and address them using galactic chemical evolution simulations, bin... Read More

The neutron capture process in the He shell in core-collapse supernovae: Presolar silicon carbide grains as a diagnostic tool for nuclear astrophysics (2017)
Journal Article
Pignatari, M., Hoppe, P., Trappitsch, R., Fryer, C., Timmes, F., Herwig, F., & Hirschi, R. (2018). The neutron capture process in the He shell in core-collapse supernovae: Presolar silicon carbide grains as a diagnostic tool for nuclear astrophysics. Geochimica et cosmochimica acta, 221, 37-46. https://doi.org/10.1016/j.gca.2017.06.005

Carbon-rich presolar grains are found in primitive meteorites, with isotopic measurements to date suggesting a core-collapse supernovae origin site for some of them. This holds for about 1-2 % of presolar silicon carbide (SiC) grains, so-called Type... Read More

NuGrid stellar data set. 1. Stellar yields from H to Bi for stars with metallicities Z=0.02 and Z=0.01 (2016)
Journal Article
Pignatari, M., Herwig, F., Hirschi, R., Bennett, M., Rockefeller, G., Fryer, C., …Young, P. (2016). NuGrid stellar data set. 1. Stellar yields from H to Bi for stars with metallicities Z=0.02 and Z=0.01. Astrophysical Journal Supplement, 225(2), https://doi.org/10.3847/0067-0049/225/2/24

We provide a set of stellar evolution and nucleosynthesis calculations that applies established physics assumptions simultaneously to low- and intermediate-mass and massive star models. Our goal is to provide an internally consistent and comprehensiv... Read More

Nucleosynthesis simulations for the production of the p-nuclei 92Mo and 94Mo in a Supernova type II model (2015)
Journal Article
Göbel, K., Glorius, J., Koloczek, A., Pignatari, M., Reifarth, R., Schach, R., & Sonnabend, K. (2015). Nucleosynthesis simulations for the production of the p-nuclei 92Mo and 94Mo in a Supernova type II model. EPJ Web of Conferences, 93, 03006. https://doi.org/10.1051/epjconf/20159303006

We present a nucleosynthesis sensitivity study for the γ-process in a Supernova type II model within the NuGrid research platform. The simulations aimed at identifying the relevant local production and destruction rates for the p-nuclei of molybdenum... Read More

Constraining the 12C+12C fusion cross section for astrophysics (2015)
Journal Article
Bucher, B., Fang, X., Tang, X., Tan, W., Almaraz-Calderon, S., Alongi, A., …Wiescher, M. (2015). Constraining the 12C+12C fusion cross section for astrophysics. EPJ Web of Conferences, 93, 03009. https://doi.org/10.1051/epjconf/20159303009

The 12 C+ 12 C reaction is one of the single most important nuclear reactions in astrophysics. It strongly influences late evolution of massive stars as well as the dynamics of type Ia supernovae and x-ray superbursts. An accurate estimation of the c... Read More

Experimental neutron capture data of 58Ni from the CERN n_TOF facility (2015)
Journal Article
Žugec, P., Barbagallo, M., Colonna, N., Bosnar, D., Altstadt, S., Andrzejewski, J., …Wright, T. (2015). Experimental neutron capture data of 58Ni from the CERN n_TOF facility. EPJ Web of Conferences, 93, 02009. https://doi.org/10.1051/epjconf/20159302009

The neutron capture cross section of 58 Ni was measured at the neutron time of flight facility n-TOF at CERN, from 27 meV to 400 keV neutron energy. Special care has been taken to identify all the possible sources of background, with the so-called ne... Read More

High-resolution abundance analysis of red giants in the globular cluster NGC 6522 (2014)
Journal Article
Barbuy, B., Chiappini, C., Cantelli, E., Depagne, E., Pignatari, M., Hirschi, R., …Gómez, A. (2014). High-resolution abundance analysis of red giants in the globular cluster NGC 6522. Astronomy and Astrophysics, 570, A76. https://doi.org/10.1051/0004-6361/201424311

© 2014 ESO. Context. The [Sr/Ba] and [Y/Ba] scatter observed in some galactic halo stars that are very metal-poor and in a few individual stars of the oldest known Milky Way globular cluster NGC 6522 have been interpreted as evidence of early enrich... Read More

Measurement of the MACS of 159Tb(n, γ) at kT=30 keV by Activation (2014)
Journal Article
Praena, J., Mastinu, P., Pignatari, M., Quesada, J., Capote, R., & Morilla, Y. (2014). Measurement of the MACS of 159Tb(n, γ) at kT=30 keV by Activation. Nuclear data sheets, 120, 205-207. https://doi.org/10.1016/j.nds.2014.07.047

The measurement of the Maxwellian-Averaged Cross-Section (MACS) of the 159 Tb(n, γ) reaction at kT=30 keV by the activation technique is presented. An innovative method for the generation of Maxwellian neutron spectra at kT=30 keV is used. An experim... Read More

Neutron Capture Reactions on Fe and Ni Isotopes for the Astrophysical s-process (2014)
Journal Article
Lederer, C., Giubrone, G., Massimi, C., Žugec, P., Barbagallo, M., Colonna, N., …Schumann, D. (2014). Neutron Capture Reactions on Fe and Ni Isotopes for the Astrophysical s-process. Nuclear data sheets, 120, 201-204. https://doi.org/10.1016/j.nds.2014.07.046

Neutron capture cross sections in the keV neutron energy region are the key nuclear physics input to study the astrophysical slow neutron capture process. In the past years, a series of neutron capture cross section measurements has been performed at... Read More

Measurement of the 241Am and the 243Am Neutron Capture Cross Sections at the n_TOF Facility at CERN (2014)
Journal Article
Riego, A., Reifarth, R., Rauscher, T., Sarmento, R., Rubbia, C., Roman, F., …Schumann, D. (2014). Measurement of the 241Am and the 243Am Neutron Capture Cross Sections at the n_TOF Facility at CERN. Nuclear data sheets, 119, 65-68. https://doi.org/10.1016/j.nds.2014.08.020

The capture cross sections of 241 Am and 243 Am were measured at the n TOF facility at CERN in the epithermal energy range with a BaF 2 Total Absorption Calorimeter. A preliminary analysis of the 241 Am and a complete analysis of the 243 Am measureme... Read More

Measurement of the neutron capture cross section of the c235U with the CERN n_TOF total absorption calorimeter and a fission tagging based on micromegas detectors (2014)
Journal Article
Žugec, P., Wright, T., Weiß, C., Weigand, M., Ware, T., Wallner, A., …Tsinganis, A. (2014). Measurement of the neutron capture cross section of the c235U with the CERN n_TOF total absorption calorimeter and a fission tagging based on micromegas detectors. Nuclear data sheets, 119, 10-13. https://doi.org/10.1016/j.nds.2014.08.005

© 2014 Elsevier Inc. All rights reserved. Current and future nuclear technologies require more accurate nuclear data on (n,γ) cross sections and the α-ratios of fissile isotopes. Their measurement presents several difficulties, mainly related to the... Read More

High-precision measurement of the 238U (n,γ) cross section with the Total Absorption Calorimeter (TAC) at n_TOF, CERN (2014)
Journal Article
Wright, T., Guerrero, C., Billowes, J., Ware, T., Cano-Ott, D., Mendoza, E., …Vermeulen, M. (2014). High-precision measurement of the 238U (n,γ) cross section with the Total Absorption Calorimeter (TAC) at n_TOF, CERN. Nuclear data sheets, 119, 26-30. https://doi.org/10.1016/j.nds.2014.08.009

The neutron capture cross section of 238 U is fundamental to the design and operation of current reactors and future fast nuclear reactors, and thus must be measured to a high level of accuracy. An experiment has been performed at the CERN n TOF faci... Read More

Investigation of neutron-induced reactions at n_TOF: An overview of the 2009-2012 experimental program (2014)
Journal Article
Guerrero, C., Altstadt, S., Andrzejewski, J., Audouin, L., Barbagallo, M., Bécares, V., …Tarrío, D. (2014). Investigation of neutron-induced reactions at n_TOF: An overview of the 2009-2012 experimental program. Nuclear data sheets, 119, 5-9. https://doi.org/10.1016/j.nds.2014.08.004

The neutron time-of-flight facility n TOF is operating at CERN (Switzerland) since 2001, having started in 2009 a new campaign with an upgraded spallation target. The ambitious program carried out includes a large number of experiments in nuclear tec... Read More

Measurement of the 54,57Fe (n,γ) cross section in the resolved resonance region at CERN n_TOF (2014)
Journal Article
Valenta, S., Vannini, G., Variale, V., Vaz, P., Ventura, A., Versaci, R., …Versaci, R. (2014). Measurement of the 54,57Fe (n,γ) cross section in the resolved resonance region at CERN n_TOF. Nuclear data sheets, 119, 117-120. https://doi.org/10.1016/j.nds.2014.08.033

© 2014 Elsevier Inc. 54 Fe and 57 Fe are stable iron isotopes, which play an important role in the nucleosynthesis of theslow neutron capture process (s process). In addition, these nuclei are present in many structuralmaterials, and therefore, the k... Read More

Current quests in nucleosynthesis: Present and future neutron-induced reaction measurements (2014)
Journal Article
Praena, J., Pignatari, M., Mastinu, P., Martín-Hernández, G., Prete, G., Quesada, J., & Sabaté-Gilarte, M. (2014). Current quests in nucleosynthesis: Present and future neutron-induced reaction measurements. EPJ Web of Conferences, 66, 07022. https://doi.org/10.1051/epjconf/20146607022

We present some open questions in nucleosynthesis focused on the measurement of relevant neutron capture cross-sections and on new experimental methods. We review the recent 63 Ni(n,γ) experiment carried out at the n-TOF facility at CERN and its astr... Read More

Ni62(n,γ) and Ni63(n,γ) cross sections measured at the n_TOF facility at CERN (2014)
Journal Article
Lederer, C., Massimi, C., Berthoumieux, E., Colonna, N., Dressler, R., Guerrero, C., …Tassan-Got, L. (2014). Ni62(n,γ) and Ni63(n,γ) cross sections measured at the n_TOF facility at CERN. Physical Review C - Nuclear Physics, 89(2), https://doi.org/10.1103/physrevc.89.025810

The cross section of the Ni62(n,γ) reaction was measured with the time-of-flight technique at the neutron time-of-flight facility n-TOF at CERN. Capture kernels of 42 resonances were analyzed up to 200 keV neutron energy and Maxwellian averaged cross... Read More