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Related papers: Photoabsorption on nuclei

200 papers

A theoretical investigation of photoabsorption and photoionization of Fe^{14+} extending beyond an earlier frame transformation R-matrix implementation is performed using a fully-correlated, Breit-Pauli R-matrix formulation including both…

Atomic Physics · Physics 2015-06-04 M. F. Hasoglu , T. W. Gorczyca , M. A. Bautista , Z. Felfli , S. T. Manson

The 4He total photoabsorption cross section is calculated with the realistic nucleon-nucleon potential Argonne V18 and the three-nucleon force (3NF) Urbana IX. Final state interaction is included rigorously via the Lorentz Integral…

Nuclear Theory · Physics 2008-11-26 D. Gazit , S. Bacca , N. Barnea , W. Leidemann , G. Orlandini

The total cross section for radiative neutron capture on a proton, $np \to d \gamma$, is evaluated at big bang nucleosynthesis (BBN) energies. The electromagnetic transition amplitudes are calculated up to next-to leading order within the…

Nuclear Theory · Physics 2009-11-11 S. Ando , R. H. Cyburt , S. W. Hong , C. H. Hyun

The cross section of the reaction $^3$He$(\gamma,pn)p_{spec}$ in the energy range 150 - 450 MeV has been calculated in a quasifree two-body model and compared with a recent kinematically complete experiment. In comparison with free deuteron…

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

We calculate total photon-nucleus and electron-nucleus cross sections $\gamma A\to X$, $e A\to e^\prime X$ and several cross sections on pion and eta production in nuclei in the energy regime between the first and the third resonance region…

Nuclear Theory · Physics 2009-10-31 J. Lehr , M. Effenberger , U. Mosel

Photoabsorption of atomic oxygen in the energy region below the $\rm 1s^{-1}$ threshold in x-ray spectroscopy from {\it Chandra} and {\it XMM-Newton} is observed in a variety of x-ray binary spectra. Photoabsorption cross sections…

High Energy Astrophysical Phenomena · Physics 2015-06-16 B. M. McLaughlin , C. P. Ballance , K. P. Bowen , D. J. Gardenghi , W. C. Stolte

The total photoabsorption cross sections of 6He and 6Li are calculated microscopically with full inclusion of the six-nucleon final state interaction using semirealistic nucleon-nucleon potentials. The Lorentz Integral Transform (LIT)…

We present a model for electron scattering off nuclei and photon absorption in the resonance energy region (W <= 2 GeV). The elementary gamma/gamma* N-vertex is described using in-medium kinematics and up-to-date form factors for…

Nuclear Theory · Physics 2008-09-16 O. Buss , T. Leitner , U. Mosel , L. Alvarez-Ruso

Radiative thermal neutron capture cross sections for nuclei participating in s-process and p-process nucleosynthesis in and around $N=50$ closed neutron shell have been calculated in statistical semi-microscopic Hauser-Feshbach approach for…

Nuclear Theory · Physics 2018-05-29 Saumi Dutta , G. Gangopadhyay , Abhijit Bhattacharyya

Net ionization and net capture cross-section calculations are presented for proton collisions from methane molecules and the DNA/RNA nucleobases adenine, cytosine, guanine, thymine, and uracil. We use the recently introduced…

Atomic and Molecular Clusters · Physics 2019-12-11 Hans Juergen Luedde , Marko Horbatsch , Tom Kirchner

Photoneutron reactions on $^{208}$Pb in the Giant Dipole Resonance energy region have been investigated at the $\gamma$-ray beam line of the NewSUBARU facility in Japan. The measurements made use of quasi-monochromatic laser Compton…

The cross section of the photonuclear reaction in the nucleon-resonance region is calculated to search the resonance-nucleon scattering amplitude in the nucleus. It is assumed that the resonance $R$ is produced and decayed in the elementary…

Nuclear Theory · Physics 2023-05-17 Swapan Das

The radiative thermal neutron capture cross sections over the range of thermal energies from 1 keV to 1 MeV are studied in statistical Hauser-Feshbach formalism. The optical model potential is constructed by folding the density dependent…

Nuclear Theory · Physics 2016-11-15 Saumi Dutta , G. Gangopadhyay , Abhijit Bhattacharyya

Photoexcitation of the nucleon is studied in the framework of the constituent quark model with nonrelativistic quark-quark interactions. Utilizing the dominance of the pairwise structure of the relevant three-quark potential, the bound and…

Nuclear Theory · Physics 2022-03-02 I. P. Matamba , M. Braun , S. A. Sofianos

The differential cross section for the reaction p(gamma, eta p) has been measured from threshold to 1100 MeV photon laboratory energy. For the first time, the region of the S11(1535) resonance is fully covered in a photoproduction…

Inclusive single pion photoproduction on the deuteron is studied in the first resonance region. The calculation is based on the use of the diagrammatic approach. Pole diagrams and one-loop diagrams with NN rescattering in the final state…

Nuclear Theory · Physics 2007-05-23 M. I. Levchuk , M. Schumacher , F. Wissmann

Inclusive studies of nuclear photoabsorption have provided clear evidence of medium modifications in the properties of hadrons. However, the results have not been explained in a model independent way. A deeper understanding of the situation…

Nuclear Experiment · Physics 2017-08-23 S. Schadmand

The Li7 total photoabsorption cross section is calculated microscopically. As nucleon-nucleon interaction the semi-realistic central AV4' potential with S- and P-wave forces is taken. The interaction of the final 7-nucleon system is fully…

Nuclear Theory · Physics 2009-11-10 S. Bacca , H. Arenhoevel , N. Barnea , W. Leidemann , G. Orlandini

Medium effects as a function of the mass number $A$ are studied in the total photonuclear cross section from the $\Delta$-resonance region up to the region where shadowing effects are known to exist. A consistent picture is obtained by…

Nuclear Theory · Physics 2007-05-23 S. Boffi , Ye. Golubeva , L. A. Kondratyuk , M. I. Krivoruchenko , E. Perazzi

The total reaction cross section of high-energy nucleus-nucleus collision refects the nuclear density profiles of the colliding nuclei and has been a standard tool to investigate the size properties of short-lived unstable nuclei. This…

Nuclear Theory · Physics 2022-07-06 Katsuhito Makiguchi , Wataru Horiuchi