Isovector Electromagnetic Exchange Currents and the Nucleon-Nucleon Interaction

A method of projecting out the parts of the tensor- and spin-spin components of the nucleon-nucleon interaction that correspond to isospin 1 pseudoscalar and vector exchanges is given. From those potential components the isovector exchange current operators of main importance in magnetic electron scattering may be constructed. The resulting exchange current operators satisfy the continuity equation with the interaction potential. By using them in place of the usual single-meson exchange current operators consistency between the current operators and the wavefunctions used in evaluating matrix elements for nuclear electromagnetic reactions can be achieved. The utility of the results is illustrated for the case of backward electrodisintegration of deuterium and radiative np-capture.

[1]  J. Mathiot.  What do we learn from deuteron electrodisintegration near threshold and thermal np capture , 1984 .

[2]  D. Riska,et al.  The nucleon anomalous magnetic moment and meson exchange current operators , 1983 .

[3]  D. Riska.  The meson-exchange magnetic moment operator in heavy nuclei , 1983 .

[4]  A. Faessler,et al.  How Strong is the Rho-Meson Exchange in the NN Interaction? , 1982 .

[5]  J. Mathiot.  Short-range effects in meson exchange currents for the radiative n-p capture of the deuteron , 1982 .

[6]  E. Jans,et al.  Electron-Induced Deuteron Disintegration at Threshold , 1981 .

[7]  M. Lacombe,et al.  Parametrization of the Paris N-N potential , 1980 .

[8]  H. Arenhövel,et al.  Electrodisintegration of deuterium including nucleon detection in coincidence , 1979 .

[9]  B. Sommer.  Deuteron Electrodisintegration at High-Energy and Momentum Transfer , 1978 .

[10]  J. Friar,et al.  Current conservation, exchange currents, and hadronic electromagnetic form factors , 1976 .

[11]  E. Pietarinen,et al.  The ϱNN vertex in vector-dominance models , 1975 .

[12]  J. Hockert,et al.  Meson exchange currents in deuteron electro-disintegration , 1973 .

[13]  M. Chemtob,et al.  Two-Pion-Exchange Nucleon-Nucleon Potential , 1972 .

[14]  G. Brown,et al.  Meson exchange effects in n + p → d + γ , 1972 .

[15]  M. Chemtob,et al.  Nature of the two-pion exchange contribution to the nuclear force , 1971 .

[16]  M. Chemtob,et al.  Meson exchange currents in nuclear weak and electromagnetic interactions , 1971 .

[17]  C. Collie,et al.  The proton-thermal neutron capture cross section , 1965 .

[18]  H. Noyes.  THE INTERACTION EFFECT IN n-p CAPTURE , 1965 .