The interaction of Nucleon-Nucleon (N N ) has certain physical characteristics, which indicated by nucleon, and meson degrees of freedom. The main purpose of this work is calculating the ground state energies of 2 1 H and 4 2 He through the two-body system with the exchange of mesons (π, σ, ω) that mediated between two nucleons. This paper investigates NN interaction based on the quasirelativistic decoupled Dirac equation and self-consistent Hartree-Fock formulation. We construct one-boson exchange potential (OBEP) model, where each nucleon is treated as a Dirac particle and acts as a source of pseudoscalar, scalar, and vector fields. The potential in the present work is analytically derived with two static functions of meson, the single particle energy dependent(SPED) and generalized Yukawa (GY) functions, the parameters used in meson functions are just published ones (mass, coupling constant,and cut off parameters). The theoretical results are compared to other theoretical models and their corresponding experimental data, one can see that the SPED function gives more satisfied agreement than the GY function in case of the considered nuclei.
The possibility of observing a bright interior in the nucleus ''viewed'' by intermediate energy alpha particles (E ␣ ϭ172.5 MeV͒, as a probe for the 58 Ni nucleus, previously predicted by applying only a first-order noneikonal correction and one simple optical model potential was confirmed. The first-, second-, and third-order noneikonal corrections to the Glauber model were incorporated in three arbitrary different nominal optical potentials and the effects of switching ͑off/on͒ the Coulomb potential were studied. The role of corrections in the effective potentials and also the results of calculations of the imaginary part of the phase shift functions for the different optical potentials used were discussed. ͓S0556-2813͑97͒01107-2͔
Nuclear quark distribution functions, obtained in the framework of the multiquark cluster model, show that the EMC effect can be explained by taking into account the scattering on colourless multiquark configurations in nuclei. The prediction for the behaviour of the nuclear structure function in the kinematical region X > 1, which has not been sufficiently studied experimentally, is given. The Drell-Yan cross sections for lepton pair production in proton-platinum at 400GeVc" and pion-tungsten at pion energy 280GeV interactions were calculated in addition to the prediction of the behaviour of crawsection ratios in different kinematical regions. The predictions show significant nuclear effects in these processes.
Three different signals from the intermediate energy range (IE) (coming from kaons, quarks, and α -particles) are presented to account for the new properties of nuclei. First, we fixed the famous discrepancy of the unconventional behavior of the K+ meson interaction with nuclei (e.g. 12C and 40Ca) in the energy region E ≤ 1 GeV to be in the ranges (6.5 % -12 %) and (3.7 % -7 %) respectively. We used Glauber theory corrected with higher-order noneikonal (NE) corrections and twobody short range correlations (CO) between target nucleons taking into account their full Fermi motion (F). This phenomenon is interpreted as a possible EMC-type effect at this soft IE nuclear reactions. Secondly, we found a convinced physical explanation for the large-angle diffraction pattern of the IE α -particle scattering from nuclei where the results are sensitive to the details of the real part of the nominal optical potential. We have showed, using also higher-order NE corrections of Wallace, that the simple picture of the optical model is no longer valid since the effective imaginary part is rather a complicated function of both the real and imaginary parts of the nominal used optical potential. In addition, it was confirmed the possibility of observing a bright interior in the nucleus due to the drastic decrease found in the imaginary part of the "effective" optical potential in the central region of the nucleus where the mean free path of α -particle becomes more larger than in the surface domain. Third, it was shown the impossibility to explain the charge form factor behavior of nuclei in the whole measured region of the momentum transfer using only the nucleonic channel, and an existence of multiquark systems in nuclei is necessary to enhance these form factors.
The (semi)microscopic double-folding nucleusÄnucleus optical potentials are suggested for consideration of inelastic scattering with excitation of collective nuclear states by using the adiabatic approach and the elastic scattering amplitude in the high-energy approximation. The analytical expression for inelastic scattering amplitude is obtained keeping theˇrst-order terms in the deformation parameter of a potential. Calculations of inelastic cross sections for the 17 O heavy ions scattered on different nuclei at about hundred MeV/nucleon are made, and the acceptable qualitative agreement with the experimental data is obtained without introducing free parameters. The prospect of the method for further applications is discussed."²Ö · ¸¸³μÉ·¥´¨Ö´¥Ê ¶·Ê£μ£μ · ¸¸¥Ö´¨Ö¸¢μ §¡Ê¦¤¥´¨¥³ ±μ²²¥±É¨¢´Ò̸μ¸ÉμÖ´¨°Ö¤¥· ¶·¥¤² -£ ¥É¸Ö¨¸ ¶μ²Ó §μ¢ ÉÓ ( ¶μ²Ê)³¨±·μ¸±μ ¶¨Î¥¸±¨°Ö¤·μ-Ö¤¥·´Ò°μ ¶É¨Î¥¸±¨° ¶μÉ¥´Í¨ ², ¤¨ ¡ ɨΥ¸±¨° ¶ μ¤Ì줨 ³ ¶²¨ÉÊ¤Ê Ê ¶·Ê£μ£μ · ¸¸¥Ö´¨Ö ¢ ¢Ò¸μ±μÔ´¥·£¥É¨Î¥¸±μ³ ¶·¨¡²¨¦¥´¨¨. μ²ÊÎ¥´μ ´ ²¨É¨-Î¥¸±μ¥ ¢Ò· ¦¥´¨¥ ¤²Ö ³ ¶²¨ÉʤҴ¥Ê ¶·Ê£μ£μ · ¸¸¥Ö´¨Ö, £¤¥ ʤ¥·¦¨¢ ÕÉ¸Ö Î²¥´Ò ¶¥·¢μ£μ ¶μ·Ö¤± ¢ · §²μ¦¥´¨¨ ¶μÉ¥´Í¨ ² ¶μ ¶ · ³¥É·Ê ¤¥Ëμ·³ ͨ¨. ‚Ò ¶μ²´¥´Ò · ¸Î¥ÉÒ´¥Ê ¶·Ê£¨Ì¸¥Î¥´¨°· ¸-¥Ö´¨Ö ÉÖ¦¥²Ǫ̀μ´μ¢ 17 O · §´Ò³¨Ö¤· ³¨ ¶·¨Ô´¥·£¨ÖÌ μ±μ²μ 100 OEÔ‚/´Ê±²μ´,¨ ¶μ²ÊÎ¥´μ Ê¤μ¢²¥É¢μ·¨É¥²Ó´μ¥¸μ£² ¸¨¥¸Ô±¸ ¶¥·¨³¥´É ²Ó´Ò³¨¤ ´´Ò³¨¡¥ § ¢¢¥¤¥´¨Ö¸¢μ¡μ¤´ÒÌ ¶ · ³¥É·μ¢. ¡¸Ê¦¤ ÕÉ¸Ö ¢μ §³μ¦´μ¸É¨ ¶·¥¤²μ¦¥´´μ£μ ¶μ¤Ìμ¤ ¤²Ö ¤ ²Ó´¥°Ï¨Ì ¶·¨²μ¦¥´¨°.
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