caa a22 4500 465810217 CHVBK 20180323112114.0 cr unu---uuuuu 170327e19900801xx s 000 0 eng 10.1007/BF02820548 doi (NATIONALLICENCE)springer-10.1007/BF02820548 Regionwise absorption, interaction time, and annihilation cross-section in antiproton-nucleus collision [Elektronische Daten] [B. Dey, C. Shastry] Summary: The relative importance of different regions of antiproton-nucleus optical potential in generating the total reaction cross-section σγ is examined using the method of regionwise absorption as formulated in heavy-ion scattering. We find that the maximum absorption takes place around 1.485×A 1/3 fm for12C and 1.348×A 1/3fm for40Ca atE lab=46.8 MeV and the absorption peak has a width of about 2.4fm in the case of12C and 2.3fm in the case of40Ca. Using this method together with the estimate of antiproton mean free path inside the nucleus and the critical distance for $$\overline {\text{p}} {\text{ - p}}$$ annihilation, it is found that annihilation cross-section contribution to reaction cross-section is expected to be about 50% or more. The time scale involved in $$\overline {\text{p}} {\text{ - A}}$$ collision is calculated using classical Coulomb-nuclear trajectory and its correlation with the reaction cross-section is examined. Società Italiana di Fisica, 1990 Nucleon-induced reactions and scattering nationallicence Dey B. Department of Physics, North-Eastern Hill University, 793003, Shillong, India aut Shastry C. Department of Physics, North-Eastern Hill University, 793003, Shillong, India aut Il Nuovo Cimento A (1965-1970) Società Italiana di Fisica 103/8(1990-08-01), 1199-1211 103:8<1199 1990 103 40763 https://doi.org/10.1007/BF02820548 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02820548 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Dey B. Department of Physics, North-Eastern Hill University, 793003, Shillong, India aut NATIONALLICENCE 700 1- Shastry C. Department of Physics, North-Eastern Hill University, 793003, Shillong, India aut NATIONALLICENCE 773 0- Il Nuovo Cimento A (1965-1970) Società Italiana di Fisica 103/8(1990-08-01), 1199-1211 103:8<1199 1990 103 40763 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer