Results 31 to 40 of about 3,110,250 (305)

Nuclear reactions in astrophysics

Eurasian Journal of Physics and Functional Materials, 2021
This work is an attempt to present some problems on the evolution of the Universe: the nucleosynthesis and cosmochronology from the standpoint of physics of particles and nuclei, in particular with the use of the lat est results, obtained by means of ...
Yu. E. Penionzhkevich
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The role of Fission in the search of the Super Heavy Land: Fission modes in heavy and superheavy nuclei. Case study of 180Hg [PDF]

EPJ Web of Conferences
Many observations strongly support the hypothesis that nuclei may fission through several independent fission modes (multimodal fission) interpreted as different prescission shapes and fission paths in a multidimensional potential energy landscape where ...
Vardaci E., Di Nitto A., Banerjee T., Pulcini A., Setaro P.A., Alifano G., La Rana G., Carjan N., Cicchella A., Spinosa S., Kozulin E.M., Trzaska W.H., Itkis I.M., Knyazheva G.N., Kumar D., Novikov K.V., Vorobiev I.V., Khlebnikov S.V., Cheralu M., Kozulina N.I., Pchelintsev I.V., Borcea C., Calinescu S., Filipescu D.M., Harca I.M., Petrone C.   +25 more
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12C+12C reactions for Nuclear Astrophysics [PDF]

EPJ Web of Conferences, 2023
12C fusion reactions are among the most important in stellar evolution since they determine the destiny of massive stars. Over the past fifty years, massive efforts have been done to measure these reactions at low energies. However, existing data present
Morales-Gallegos Lizeth, Aliotta Marialuisa, Best Andreas, Bruno Carlo G., Buompane Rafaelle, Davinson Thomas, De Cesare Mario, Di Leva Antonino, D’Onofrio Antonio, Duarte Jeremias, Gasques Leandro, Gialanella Lucio, Imbriani Gianluca, Porzio Giuseppe, Rapagnani David, Romoli Mauro, Terrasi Filippo   +16 more
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Raman Study of Polycrystalline Si₃N₄ Irradiated with Swift Heavy Ions

Crystals, 2021
A depth-resolved Raman spectroscopy technique was used to study the residual stress profiles in polycrystalline silicon nitride that was irradiated with Xe (167 MeV, 1 × 1011 cm−2 ÷ 4.87 × 1013 cm−2) and Bi (710 MeV, 1 × 1011 cm−2 ÷ 1 × 1013 cm−2) ions ...
Ainash Zhumazhanova, Alisher Mutali, Anel Ibrayeva, Vladimir Skuratov, Alma Dauletbekova, Ekaterina Korneeva, Abdirash Akilbekov, Maxim Zdorovets   +7 more
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Investigating the predicted breathing-mode excitation of the Hoyle state

Physics Letters B, 2022
Knowledge of the low-lying monopole strength in C12—the Hoyle state in particular—is crucial for our understanding of both the astrophysically important 3α reaction and of α-particle clustering. Multiple theoretical models have predicted a breathing mode
K.C.W. Li, F.D. Smit, P. Adsley, R. Neveling, P. Papka, E. Nikolskii, J.W. Brümmer, L.M. Donaldson, M. Freer, M.N. Harakeh, F. Nemulodi, L. Pellegri, V. Pesudo, M. Wiedeking, E.Z. Buthelezi, V. Chudoba, S.V. Förtsch, P. Jones, M. Kamil, J.P. Mira, G.G. O'Neill, E. Sideras-Haddad, B. Singh, S. Siem, G.F. Steyn, J.A. Swartz, I.T. Usman, J.J. van Zyl   +27 more
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Role of neutron rearrangement channels in sub-barrier fusion

EPJ Web of Conferences, 2015
Different factors influencing the sub-barrier fusion enhancement owing to neutron rearrangement with positive Q values are studied. It was found that opposite to the previous opinion the presence of positive Q values is necessary but not sufficient to ...
Karpov A. V., Rachkov V. A., Denikin A. S., Zagrebaev V. I.   +3 more
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Nuclear Reactions for Astrophysics and Other Applications [PDF]

, 2011
Cross sections for compound-nuclear reactions are required for many applications. The surrogate nuclear reactions method provides an indirect approach for determining cross sections for reactions on unstable isotopes, which are difficult or impossible to
J J Ressler, F S Dietrich, J E Escher, Escher, J E, Dietrich, F S, Burke, J T, J T Burke, Scielzo, N D, N D Scielzo, Ressler, J J   +9 more
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Patchy nuclear chain reactions

Communications Physics, 2021
Understanding and predicting fluctuations of the neutron population within a nuclear reactor is of fundamental importance for nuclear safety, especially in connection with reactor control at startup and shutdown.
Eric Dumonteil, Rian Bahran, Theresa Cutler, Benjamin Dechenaux, Travis Grove, Jesson Hutchinson, George McKenzie, Alexander McSpaden, Wilfried Monange, Mark Nelson, Nicholas Thompson, Andrea Zoia   +11 more
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Segmented Silicon Detectors for Nuclear Reactions and Applied Physics: the HELICA Setup

, 2022
Segmented silicon detectors offer a unique opportunity to investigate nuclear reactions at moderately low bombarding energies. They provide excellent resolution and modularity, which are highly required in modern nuclear and applied physics ...
Mantovani G., Dell'aquila D., Rigato V., Russo M., Scomparin L., Frosin C., Verde G., Marchi T., Vigilante M., Cicerchia M., Redigolo L., Piantelli S., Pasquali G., Cinausero M., Casini G., Valdre S., Bolzonella R., Ordine A., Ottanelli P., Aytekin M., Fabris D., Stefanini A., Ciampi C., Lombardo I., Camaiani A., Barlini S., Gramegna F.   +26 more
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Synthesis of superheavy nuclei: Obstacles and opportunities

EPJ Web of Conferences, 2015
There are only 3 methods for the production of heavy and superheavy (SH) nuclei, namely, fusion reactions, a sequence of neutron capture and beta(-) decay and multinucleon transfer reactions.
Zagrebaev V.I., Karpov A.V., Greiner Walter   +2 more
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