caa a22 4500 465809421 CHVBK 20180323112112.0 cr unu---uuuuu 170327e19900901xx s 000 0 eng 10.1007/BF02799208 doi (NATIONALLICENCE)springer-10.1007/BF02799208 Generator coordinate method calculations of natural orbitals and single-particle occupation numbers in4He,16O and40Ca [Elektronische Daten] [A. Antonov, Chr Christov, E. Nikolov, I. Petkov, I. Bonev] Summary: Single-particle occupation numbers and natural orbitals in4He,16O and40Ca are calculated diagonalizing the one-body density matrix obtained in an approach within the generator coordinate method. Square-well and harmonic-oscillator construction potentials and Skyrme-like forces are used. The natural orbitals (single-particle wave functions) are presented in both coordinate and momentum spaces. Together with the nucleon momentum distributionn(k) they are compared with results of Hartree-Fock as well as of correlation methods and with available experimental data forn(k) in4He. The realistic high-momentum behaviour ofn(k) and of the natural orbitals in the case of square-well construction potential shows that the nucleon-nucleon correlations at small distances are taken into account. It is pointed out that the correlations strongly affect the natural orbitals but not the occupation numbers. Società Italiana di Fisica, 1990 General and average properties of nuclei nationallicence properties of nuclear energy levels nationallicence Nuclear-structure models and methods nationallicence Antonov A. Higher Institute of Medicine, Varna, Bulgaria aut Christov Chr Higher Institute of Medicine, Varna, Bulgaria aut Nikolov E. Higher Institute of Medicine, Varna, Bulgaria aut Petkov I. Higher Institute of Medicine, Varna, Bulgaria aut Bonev I. Higher Institute of Medicine, Varna, Bulgaria aut Il Nuovo Cimento A (1965-1970) Società Italiana di Fisica 103/9(1990-09-01), 1287-1300 103:9<1287 1990 103 40763 https://doi.org/10.1007/BF02799208 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02799208 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Antonov A. Higher Institute of Medicine, Varna, Bulgaria aut NATIONALLICENCE 700 1- Christov Chr Higher Institute of Medicine, Varna, Bulgaria aut NATIONALLICENCE 700 1- Nikolov E. Higher Institute of Medicine, Varna, Bulgaria aut NATIONALLICENCE 700 1- Petkov I. Higher Institute of Medicine, Varna, Bulgaria aut NATIONALLICENCE 700 1- Bonev I. Higher Institute of Medicine, Varna, Bulgaria aut NATIONALLICENCE 773 0- Il Nuovo Cimento A (1965-1970) Società Italiana di Fisica 103/9(1990-09-01), 1287-1300 103:9<1287 1990 103 40763 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer