caa a22 4500 465809995 CHVBK 20180323112113.0 cr unu---uuuuu 170327e19901001xx s 000 0 eng 10.1007/BF02820574 doi (NATIONALLICENCE)springer-10.1007/BF02820574 The neutron-proton interaction energy of the valence nucleons [Elektronische Daten] I.—The valence shells of16O [G. Mouze, C. Ythier] Summary: For a great number of nuclei, it is now possible to calculate the value of the neutron-proton interaction energy of the valence nucleons using experimental mass data. The total n-p interaction energyE np of the valence shells of,e.g., an odd-odd nucleus can be calculated from partial interaction energies {su\fk}{inn-p}, {su\fk}{inn-2p}{ini}, {su\fk}{inp-2n}{inj},{su\fk}{in2p}{ini}-{in2n}{inJ} which are the interaction energy of the last couple of nucleons or nucleon pairs in this nucleus and in its various underlying nuclei. {su\fk}{inn-p}, defined asE np divided byN p N n, the product of the valence proton and neutron numbers, is only a mean value of the n-p interaction energy per n-p couple in a given nucleus. Tables ofE np and {su\fk}{inn-p} values, and of,{su\fk}{inn-p} , {su\fk}{inn-2p} , {su\fk}{inp-2n} and {su\fk}{in2p-2n} values, are given for the 1d5/2, 2s 1/2 and 1d 3/2 valence shells of the doubly magic16O nucleus. Nucleon pairing is found to play an eminent role. The n-p interaction energy is almost unchanged if every neutron is converted into a proton and vice versa, and is extremely dependent on the rank of the nucleons in their shell, being maximum if they have the same rank. The n-p interaction energy is strongly enhanced at each subshell closure. Società Italiana di Fisica, 1990 General and average properties of nuclei nationallicence properties of nuclear energy levels nationallicence 27.20 nationallicence 6≤A≤19 nationallicence Mouze G. Faculté des Sciences, 06034, Nice Cedex, France aut Ythier C. Faculté des Sciences, 06034, Nice Cedex, France aut Il Nuovo Cimento A (1965-1970) Società Italiana di Fisica 103/10(1990-10-01), 1467-1484 103:10<1467 1990 103 40763 https://doi.org/10.1007/BF02820574 text/html Onlinezugriff via DOI 1 brief-communication jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02820574 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mouze G. Faculté des Sciences, 06034, Nice Cedex, France aut NATIONALLICENCE 700 1- Ythier C. Faculté des Sciences, 06034, Nice Cedex, France aut NATIONALLICENCE 773 0- Il Nuovo Cimento A (1965-1970) Società Italiana di Fisica 103/10(1990-10-01), 1467-1484 103:10<1467 1990 103 40763 Metadata rights reserved Springer special CC-BY-NC licence nationallicence SWISSBIB 465809995 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer