Details

Autor(en) / Beteiligte

• Galonska, J.E.
• Faessler, Amand
• Appel, Kurt

Titel

Calculation of oscillator matrix elements directly from the nucleon-nucleon phase shifts

Ist Teil von

• Nuclear physics. A, 1970-01, Vol.155 (2), p.465-479

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

1970

Link zum Volltext

Quelle

Elsevier Journal Backfiles on ScienceDirect (DFG Nationallizenzen)

Beschreibungen/Notizen

• A method is derived and applied for the calculation of the oscillator matrix elements directly from the nucleon-nucleon phase shifts. It is an extension of the Distorted Wave Born Approximation (DWBA) method of Elliott: The Elliott method is restricted to the use of a cut-off oscillator potential as a first-order approximation to the realistic nucleon-nucleon interaction. Since the input into this method consists only of the nucleon-nucleon phase shifts (on-energy-shell data) and this unrealistic auxiliary potential one expects and gets poor results for the off-shell elements. Here we avoid the short-comings of the Elliott method by a procedure which allows that more realistic auxiliary potentials can be used. The connection between the radial wave functions of the respective auxiliary potentials and the oscillator wave functions is established by an integral equation. The DWBA corrected oscillator matrix elements for the Eikemeier-Hackenbroich and the Orsay potential as auxiliary potentials are tabulated for the oscillator lengths b = 1.4 (0.2) 2.4 fm.