K-shell processes in heavy-ion collisions, the local plasma approximation

U. KADHANE; Y. P. SINGH; C.C. MONTANARI; L. C. TRIBEDI

PHYSICAL REVIEW A - ATOMIC, MOLECULAR AND OPTICAL PHYSICS

American Physical Society

Lugar: New York; Año: 2003 vol. 67 p. 32703 - 32707

1050-2947

We have investigates K-shell vacancy productiondue to ionization and electron transfer proceses, in collisions of highly charged oxygen ions with various solids such as Cl, K, Ti, Fe and Cu at energies between 1.5 and 6.0 MeV/u. The K-shell ionization cross sections were derived from the measuremed K X-ray cross sections. An ab initio theoretical model based on the local plasma approximation LPA provides a qualitative explanation of the measured data. The LPA model explains the data to some extend for asymetric collisional systems (Zp/Zt<0.35), but deviates for more symetric ones.