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The response of a nucleus to an electromagnetic probe is a key quantity to simulate photabsorption or photodeexcitation processes. For large calculations at the scale of the entire mass table, this response can be estimated by linear…

Nuclear Theory · Physics 2024-04-05 Tong Li , Nicolas Schunck

Recently, a square-integrable discrete basis, obtained performing a simple analytical local scale transformation to the harmonic oscillator basis, has been proposed and successfully applied to study the properties of two-body systems. Here,…

Nuclear Theory · Physics 2016-04-26 J. Casal , M. Rodríguez-Gallardo , J. M. Arias

The process 3He(e,e'n) with polarized electrons and 3He in the initial state is theoretically analyzed with the aim to search for sensitivity to the electric form factor of the neutron, GEn. Faddeev calculations based on five high precision…

Nuclear Theory · Physics 2009-11-07 J. Golak , W. Gloeckle , H. Kamada , H. Witala , R. Skibinski , A. Nogga

The three-body photodisintegration of 3He has been measured with the CLAS detector at Jefferson Lab, using tagged photons of energies between 0.35 GeV and 1.55 GeV. The large acceptance of the spectrometer allowed us for the first time to…

Nuclear Experiment · Physics 2010-04-06 CLAS Collaboration , S. Niccolai , G. Audit , B. L. Berman , J. M. Laget , S. Strauch

The photodisintegration of $^9$Be in the energy region lower than $E_\gamma = 16$ MeV is investigated by using the $\alpha$~+~$\alpha$~+~$n$ three-body model and the complex scaling method. The cross section exhibits two aspects in the…

Nuclear Theory · Physics 2016-05-25 Yuma Kikuchi , Myagmarjav Odsuren , Takayuki Myo , Kiyoshi Katō

Results gained for electron scattering on $^3$He in a nonrelativistic framework are reviewed. The electromagnetic current is truncated to a single nucleon operator, but the interaction among the three nucleons is treated exactly. Thus…

Nuclear Theory · Physics 2007-05-23 W. Gloeckle , H. Kamada , J. Golak , H. Witala , S. Ishikawa

A nuclear-elastic $^9$Be+$^4$He reaction is investigated. A tangential literature overview of the proximity potential is presented, necessitated by an approximate method for calculating $l\text{-values}$. The model is surveyed intensively,…

Nuclear Theory · Physics 2020-06-16 Austin A. Morris

The two-body photodisintegration of $^4$He into a proton and a triton has been studied using the CEBAF Large-Acceptance Spectrometer (CLAS) at Jefferson Laboratory. Real photons produced with the Hall-B bremsstrahlung-tagging system in the…

Nuclear Experiment · Physics 2010-05-12 R. Nasseripour , B. L. Berman , N. Benmouna , Y. Ilieva , J. -M. Laget

We discuss some of the challenges that future nuclear modeling may face in order to improve the description of the nuclear structure. One challenge is related to the need for A-body nuclear interactions justified by various contemporary…

Nuclear Theory · Physics 2024-06-19 V. G. Gueorguiev , P. Navratil , J. P. Vary , J. P. Draayer , F. Pan

The interpretation of the signals detected by high precision experiments aimed at measuring neutrino oscillations requires an accurate description of the neutrino-nucleus cross sections. One of the key element of the analysis is the…

The present work reports results for: pd radiative capture observables measured at center-of-mass (c.m.) energies in the range 0--100 keV and at 2 MeV by the TUNL and Wisconsin groups, respectively; contributions to the…

Nuclear Theory · Physics 2014-11-18 M. Viviani , A. Kievsky , L. E. Marcucci , S. Rosati , R. Schiavilla

The Faddeev-Yakubovsky equations have been solved in configuration space for the four nucleon system. The n+t elastic cross section has been calculated using several realistic interactions and a phenomenological three-nucleon force. Special…

Nuclear Theory · Physics 2009-10-31 F. Ciesielski , J. Carbonell , C. Gignoux

Photodisintegration of polarized 3He by linearly or circularily polarized photons offers a rich choice of observables which can be calculated with high precision using a rigorous scheme of three-nucleon Faddeev equations. Using the…

Nuclear Theory · Physics 2020-02-12 H. Witała , J. Golak , R. Skibiński , K. Topolnicki , V. Urbanevych

We study the response of a nucleus composed of nucleons and confined quarks. Assuming dynamics implied by a non-relativistic cluster model, we prove that the total response is a convolution of the responses of, respectively, a nucleus with…

Nuclear Theory · Physics 2009-09-25 S. A. Gurvitz , A. S. Rinat

The triton energy spectra of the charge-exchange $^{12}$C($^3$He,t) reaction at 2 GeV beam energy are analyzed in the quasi-elastic nucleon knock-out region. Considering that this region is mainly populated by the charge-exchange of a…

Nuclear Theory · Physics 2009-09-25 Neelima G. Kelkar , B. K. Jain

Experimental momentum distributions for the transitions to the ground state and first excited state of 6He have been measured via the reaction 7Li(e,e'p)6He, in the missing momentum range from -70 to 260 MeV/c. They are compared to…

Nuclear Theory · Physics 2008-11-26 L. Lapikas , J. Wessling , R. B. Wiringa

A microscopic, non-local response theory is developed to model the interaction of electromagnetic radiation with inhomogeneous nano-scale clusters. The breakdown of classical continuum-field Mie theory is demonstrated at a critical…

Strongly Correlated Electrons · Physics 2009-11-11 Ilya Grigorenko , Stephan Haas , A. F. J. Levi

Three-body photodisintegration of 3He is calculated in the photon energy range 200 - 400 MeV assuming quasifree absorption on np pairs both in initial quasideuteron and singlet configurations. The model includes the normal nucleonic…

Nuclear Theory · Physics 2009-10-28 J. A. Niskanen , P. Wilhelm , H. Arenhoevel

Inclusive electron scattering from nuclear targets has been measured to extract the nuclear dependence of the inelastic cross section in Hall C at the Thomas Jefferson National Accelerator facility. Results are presented for 2H, 3He, 4He,…

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