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We calculate field isotope shifts for nobelium atoms using nuclear charge distributions which come from different nuclear models. We demonstrate that comparing calculated isotope shifts with experiment can serve as a testing ground for…

Atomic Physics · Physics 2020-08-26 Saleh O. Allehabi , V. A. Dzuba , V. V. Flambaum , A. V. Afanasjev , S. E. Agbemava

We utilize the generalized contact formalism in conjunction with the Woods-Saxon mean-field description of the long-range part of the nuclear wave function to assess the relative prevalence of short-range correlation pairs within atomic…

Nuclear Theory · Physics 2024-07-23 Raz Yankovich , Ehoud Pazy , Nir Barnea

The target-mass number dependence of nucleon-nucleon pairs with short-range correlations is explored in a physically transparent geometrical model within a zero-range approximation. The observed $A$ dependence of 2-nucleon ejection cross…

Nuclear Theory · Physics 2016-09-20 U. Mosel , K. Gallmeister

Fragment average isospin distributions are investigated within a microcanonical multifragmentation model in different regions of the phase diagram. The results indicate that in the liquid phase $<N/Z>$ versus $Z$ is monotonically…

Nuclear Theory · Physics 2009-11-11 Ad. R. Raduta

A theoretical approach was developed to describe secondary particle emission in heavy ion collisions, with special regards to pre-equilibrium {\alpha}-particle production. Griffin's model of non-equilibrium processes is used to account for…

Multiplicity fluctuations of intermediate-mass fragments are studied with the percolation model. It is shown that super-Poissonian fluctuations occur near the percolation transition and that this behavior is associated with the…

Nuclear Theory · Physics 2009-10-31 Tarek Gharib , Wolfgang Bauer , Scott Pratt

Nuclear astrophysics simulations aiming to study the origin of the elements in stars require a multitude of nuclear physics input. Both systematic model dependent and statistically correlated uncertainties need to be considered. An…

Solar and Stellar Astrophysics · Physics 2013-10-18 M. G. Bertolli , F. Herwig , M. Pignatari , T. Kawano

With a view towards implementation in microscopic transport simulations of heavy-ion collisions, the properties of spin-isospin modes are studied in nuclear matter consisting of nucleons and Delta isobars that interact by the exchange of pi…

Nuclear Theory · Physics 2015-06-26 J. Helgesson , J. Randrup

Differential cross sections and analyzing powers for elastic scattering from, and for inelastic proton scattering to a set of $2^+_1$ states in, ${}^{12}$C, ${}^{20}$Ne, ${}^{24}$Mg, ${}^{28}$Si and ${}^{40}$Ca, and for a set of energies…

Nuclear Theory · Physics 2008-11-26 Y. J. Kim , K. Amos , S. Karataglidis , W. A. Richter

A sample of `single-source' events, compatible with the multifragmentation of very heavy fused systems, are isolated among well-measured 155Gd+natU 36AMeV reactions by examining the evolution of the kinematics of fragments with Z>=5 as a…

Nuclear Experiment · Physics 2017-08-23 J. D. Frankland , Ch. O. Bacri , B. Borderie , M. F. Rivet , M. Squalli

Fragmentation of light charged particles is studied for various systems at different incident energies between 50 and 1000 MeV/nucleon. We analyze fragment production at incident energies above, below and at transition energies using the…

Nuclear Theory · Physics 2011-04-05 Karan Singh Vinayak , Suneel Kumar

We have demonstrated that the isospin of nuclei influences the fragment production during the nuclear liquid-gas phase transition. Calculations for Au197, Sn124, La124 and Kr78 at various excitation energies were carried out on the basis of…

Nuclear Theory · Physics 2020-05-20 N. Buyukcizmeci , R. Ogul , A. S. Botvina

We have demonstrated that the isospin of nuclei influences the fragment production during the nuclear liquid-gas phase transition. Calculations for Au197, Sn124, La124 and Kr78 at various excitation energies were carried out on the basis of…

Nuclear Theory · Physics 2009-09-29 N. Buyukcizmeci , R. Ogul , A. S. Botvina

The role of isospin in quasielastic electron scattering and charge-changing neutrino reactions is investigated in the relativistic impulse approximation. We analyze proton and neutron scaling functions making use of various theoretical…

Nuclear Theory · Physics 2008-11-26 J. A. Caballero , J. E. Amaro , M. B. Barbaro , T. W. Donnelly , J. M. Udias

Within a transport model we search for potential probes of the isospin dependence of the in-medium nucleon-nucleon (NN) cross sections. Traditional measures of the nuclear stopping power are found sensitive to the magnitude but they are…

Nuclear Theory · Physics 2009-11-11 Bao-An Li , Pawel Danielewicz , William G. Lynch

Producing rare isotopes through statistical multifragmentation is investigated using the Mekjian method for exact solutions of the canonical ensemble. Both the initial fragmentation and the the sequential decay are modeled in such a way as…

Nuclear Theory · Physics 2016-09-08 Scott Pratt , Wolfgang Bauer , Christopher Morling , Patrick Underhill

The A/Z dependence of projectile fragmentation at relativistic energies has been studied with the ALADIN forward spectrometer at SIS. A stable beam of 124Sn and radioactive beams of 124La and 107Sn at 600 MeV per nucleon have been used in…

Rare isotopes are most often studied through nuclear reactions. Nuclear reactions can be used to obtain detailed structure information but also in connection to astrophysics to determine specific capture rates. In order to extract the…

In multifragmentation of hot nuclear matter, properties of fragments embedded in a soup of nucleonic gas and other fragments should be modified as compared with isolated nuclei. Such modifications are studied within a simple model where…

Nuclear Theory · Physics 2015-06-11 J. N. De , S. K. Samaddar , X. Viñas , M. Centelles , I. N. Mishustin , W. Greiner

Heavy Ion Collisions (HIC) represent a unique tool to probe the in-medium nuclear interaction in regions away from saturation. In this report we present a selection of new reaction observables in dissipative collisions particularly…

Nuclear Theory · Physics 2015-05-18 M. Di Toro , V. Baran , M. Colonna , V. Greco
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