K-shell ionisation cross sections for Co, Ni, Cu, Zn, Ge and Se by protons of 0.2–2 MeV

Lopes, Joana; Jesus, A.P.; Ramos, S.

doi:10.1016/0029-554x(80)90092-0

Cited by 31 publications

(1 citation statement)

References 35 publications

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“…Backscattering spectra were also used to estimate the actual thickness of the Cu and the investigated element layers, and to extract the corresponding actual average incident energies, by taking the stopping power values as calculated by the code TRIM95.4 (Ziegler et al 1985). Finally, the method suggested by Lopes et al (1980) was used to enable the cross sections to be calculated at the beam energies.…”

Section: Production Cross Sectionsmentioning

confidence: 99%

Proton- and⁴He-ion-induced L-shell ionization of Pt, Pb and Bi

Balsamo

Cesare

Murolo

et al. 1999

J. Phys. B: At. Mol. Opt. Phys.

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L-shell x-ray production cross sections on selected heavy elements (Pt, Pb and Bi), some of which are of great importance from a biological point of view, have been measured by proton and 4He ion impact at energies ranging between 0.3 and 3.2 MeV and between 0.6 and 1.8 MeV, respectively. The data have been compared with the results of other laboratories, whenever existing, obtaining an overall good agreement. L-subshell ionization cross sections have been extracted and compared with the predictions of various theoretical approximations in the description of the ionization process. The disagreement observed at low values of the reduced velocity parameter LR between the data and the predictions of the ECPSSR model is significantly reduced by using a united-atom approximation in the treatment of the binding correction, as suggested by our group (ECPSSR-UA), and by replacing the screened hydrogen-like wavefunctions with the more realistic Dirac-Hartree-Slater ones. The application of a modified Coulomb deflection correction, recently suggested by our group, has further reduced the remaining discrepancies, predominantly in the case of impinging 4He ions.

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Section: Production Cross Sectionsmentioning

confidence: 99%