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Heavy nuclei bombarded with protons and deuterons in the 1 GeV range have a large probability of undergoing a process of evaporation and fission; less frequently, the prompt emission of few intermediate-mass fragments can also be observed.…

Nuclear Theory · Physics 2015-09-25 P. Napolitani , M. Colonna

Mostly for the purpose of applications for the energy and the environment and for the design of sources of neutrons or exotic nuclides, intense research has been dedicated to spallation, induced by protons or light projectiles at incident…

Nuclear Experiment · Physics 2008-11-26 P. Napolitani

One of considered nowadays scenarios of proton - nucleus reaction is spallation. Its motivation is based on experimental final-state observations of one heavy nucleus, a small number of light fragments and numerous individual nucleons. It…

Nuclear Theory · Physics 2008-01-07 Anna Kowalczyk

The spallation reactions are a type of nuclear reaction which occur in space by interaction of the cosmic rays with interstellar bodies. The first spallation reactions induced with an accelerator took place in 1947 at the Berkeley cyclotron…

Nuclear Experiment · Physics 2016-05-31 J. -C. David

The dynamics of high-energy proton-induced spallation reactions on target nuclides of $^{136}$Xe, $^{59}$Ni, $^{56}$Fe, $^{208}$Pb, $^{184}$W, $^{181}$Ta, $^{197}$Au and $^{112}$Cd, are investigated with the quantum molecular dynamics…

Nuclear Theory · Physics 2021-07-02 Hui-Gan Cheng , Zhao-Qing Feng

We present a statistical-model description of fission, in the framework of compound-nucleus decay, which is found to simultaneously reproduce data from both heavy-ion-induced fusion reactions and proton-induced spallation reactions at…

Nuclear Theory · Physics 2010-10-27 Davide Mancusi , Robert J. Charity , Joseph Cugnon

We have investigated the influence of different non-linear relativistic mean field models ($NL$, $NL\rho$ and $NL\rho\delta$) on spallation neutrons for p+Fe and Pb reactions at 0.8, 1.2 and 1.6 GeV by means of a relativistic Boltzmann…

In nuclear reactions induced by hadrons and ions of high energies, nuclei can disintegrate into many fragments during a short time (~100 fm/c). This phenomenon known as nuclear multifragmentation was under intensive investigation last 20…

Nuclear Theory · Physics 2008-06-25 A. S. Botvina

Fragments productions in spallation reactions are key infrastructure data for various applications. Based on the empirical parameterizations {\sc spacs}, a Bayesian-neural-network (BNN) approach is established to predict the fragment cross…

Nuclear Theory · Physics 2020-12-30 Chun-Wang Ma , Dan Peng , Hui-Ling Wei , Yu-Ting Wang , Jie Pu

The spallation of $^{56}$Fe in collisions with hydrogen at 1 A GeV has been studied in inverse kinematics with the large-aperture setup SPALADIN at GSI. Coincidences of residues with low-center-of-mass kinetic energy light particles and…

We consider the nonlinear dynamics of inflaton fragmentation during and after preheating in the simplest model of chaotic inflation. While the earlier regime of parametric resonant particle production and the later turbulent regime of…

High Energy Physics - Phenomenology · Physics 2008-11-26 Gary N. Felder , Lev Kofman

Use of deuteron-induced spallation reactions at intermediate energies has recently been proposed for transmutation of several long-lived fission products (LLFPs). In the design study of a transmutation system using a deuteron primary beam,…

Nuclear Theory · Physics 2018-10-17 Shinsuke Nakayama , Naoya Furutachi , Osamu Iwamoto , Yukinobu Watanabe

Yields of isotopically separated light fragments and residual nuclei produced in p(1GeV)+A collisions have been analyzed. For both fragmentation and spallation reactions isotopic scaling, i.e. factorization of the isotope ratios, was…

Nuclear Experiment · Physics 2007-05-23 M. N. Andronenko , L. N. Andronenko , W. Neubert , D. M. Seliverstov

A full implementation of the Boltzmann-Langevin equation for fermionic systems is introduced in a transport model for dissipative collisions among heavy nuclei. Fluctuations are injected in phase space and not, like in more conventional…

Nuclear Theory · Physics 2013-02-04 P. Napolitani , M. Colonna

An essential prerequisite for quark-gluon plasma production in nuclear collisions is cross-talk between the partons from different nucleons in the colliding nuclei. The initial density of partons is determined by the parton distribution…

High Energy Physics - Phenomenology · Physics 2007-05-23 H. Satz

The class of semi-hard reactions represents a promising venue where to enhance our knowledge of strong interactions and deepen the aspects related to this theory in kinematical regimes so far unexplored. In particular, the high energies…

High Energy Physics - Phenomenology · Physics 2021-09-08 Andrèe Dafne Bolognino

Isotopic effects observed in fragmentation reactions induced by protons, deuterons, and alpha particles of incident energies between 660 MeV and 15.3 GeV on 112-Sn and 124-Sn targets are discussed. The exponential scaling of the yield…

Nuclear Theory · Physics 2009-11-07 A. S. Botvina , O. V. Lozhkin , W. Trautmann

We review recent results on intermediate mass cluster production in heavy ion collisions at Fermi energy and in spallation reactions. Our studies are based on modern transport theories, employing effective interactions for the nuclear…

Nuclear Theory · Physics 2016-04-14 M. Colonna , P. Napolitani , V. Baran

Dielectron mass spectra are examined for various nuclear reactions recently measured by the DLS collaboration. A detailed description is given of all dilepton channels included in the transport model UrQMD 1.0, i.e. Dalitz decays of…

Nuclear Theory · Physics 2016-08-15 C. Ernst , S. A. Bass , M. Belkacem , H. Stöcker , W. Greiner

Fragment production in central collisions of Xe+Sn has been systematically studied with the INDRA multidetector from 25 to 150 AMeV. The predominant role of collision dynamics is evidenced in multiple intermediate mass fragment production…

Nuclear Experiment · Physics 2019-08-15 J. D. Frankland , A. Chbihi , S. Hudan , A. Mignon , A. Ono
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