Recent Advances in the Description of Electromagnetic Two - Nucleon Knockout Reactions ∗

نویسنده

  • M. Schwamb
چکیده

Recent advances in the description of electromagnetic two-nucleon knockout reactions are reviewed. The sensitivity to different types of correlations and to their treatment in the nuclear wave functions, the effects of final-state interactions and the role of center-of-mass effects in connection with the problem of the lack of orthogonality between initial bound states and final scattering states obtained by the use of an energy-dependent optical-model potential are discussed. Results are presented for proton-proton and protonneutron knockout off O also in comparison with the available data.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Electromagnetic Meson Production in the Nucleon Resonance Region

Recent experimental and theoretical advances in investigating electromagnetic meson production reactions in the nucleon resonance region are reviewed. The article gives a description of current experimental facilities with electron and photon beams and presents an unified derivation of most of the phenomenological approaches being used to extract the resonance parameters from the data. The anal...

متن کامل

Diffraction dissociation contributions to two-nucleon knockout reactions and the suppression of shell-model strength

The contributions to the cross sections of intermediate energy two-nucleon knockout reactions from events in which one nucleon is removed by the stripping (inelastic breakup) mechanism and a second by the diffraction (elastic breakup) mechanism are discussed. The small additional contributions from two-nucleon diffraction events are also estimated. The approach used combines the eikonal reactio...

متن کامل

Three-Nucleon Electroweak Capture Reactions

Recent advances in the study of the p−d radiative and μ−3He weak capture processes are presented and discussed. The three-nucleon bound and scattering states are obtained using the correlated-hyperspherical-harmonics method, with realistic Hamiltonians consisting of the Argonne v14 or Argonne v18 two-nucleon and Tucson-Melbourne or Urbana IX three-nucleon interactions. The electromagnetic and w...

متن کامل

Treatment of the ∆ Current in Electromagnetic Two-nucleon Knockout Reactions Typeset Using Revt E X 1

The contribution of the ∆(1232) isobar to the electromagnetic current of the two-nucleon system and its role in (γ,NN) processes is investigated. The difference between the genuine ∆-excitation current and that part of the current connected to the deexcitation of a preformed ∆ in the target nucleus is stressed. The latter cannot lead to a resonant behaviour of matrix elements for energies in th...

متن کامل

ar X iv : n uc l - th / 9 80 10 52 v 1 2 6 Ja n 19 98 Spin Observables in Coincidence Electron Scattering from Nuclei I : Reduced Response Functions ∗

A theoretical description of nucleon knockout reactions initiated by polarized electron scattering from polarized nuclei is presented. Explicit expressions for the complete set of reduced response functions (independent of the polarization angle) that can be experimentally obtained assuming plane waves for the electron are given in a general multipole expansion. The formalism is applied to the ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2008