RPA quasi-elastic responses in infinite and finite nuclear systems

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Abstract:

Quasi-elastic responses in nuclear matter and in 12C and 40Ca nuclei are calculated with the ring approximation to investigate the finite-size effects on the electromagnetic quasi-elastic responses. A method to simulate these effects in infinite-systems calculations is proposed. The sensitivity of the results to the various terms of the residual interaction is studied. The results of nuclear matter random-phase approximation calculations are compared with those obtained in the ring approximation to demonstrate the importance of the exchange terms.

Document Type: Miscellaneous

Affiliations: 1: Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, La Plata, 1900, Argentina 2: Dipartimento di Fisica, Università di Lecce, and Istituto Nazionale di Fisica Nucleare, sezione di Lecce, I-73100 Lecce, Italy

Publication date: January 1, 2001

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