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W and Tl M-shell X-ray emission cross sections induced by carbon ions between 2.6 MeV and 5 MeV

Considering the importance of ion beam interactions with mater for applied physics in several fields namely in elemental analysis by Particle Induced X-ray Emission (PIXE), during the recent decades many experimental studies on the M-shell X-ray production cross sections have been performed for understanding excitation and ionization of M-shell electrons by impinging charged particles. Although PIXE is usually performed by protons, experimental data on X-ray production by heavier ions is also of practical interest to exploit the fact that Ion Beam Analysis (IBA) methods can be performed simultaneously. Good knowledge of X-ray production with heavier ions would be helpful for simultaneous use of PIXE with heavy-ion analytical techniques, such as ERDA (Elastic Recoil Detection Analysis), NRA (Nuclear Reaction Analysis), AMS (Accelerator Mass Spectrometry), and MeV- SIMS (MeV Secondary Ion Mass Spectrometry). Therefore we have recently started with the systematic study of M-Shell X-ray production induced by medium energy carbon ions from heavy elements in the range between W and Bi [1, 2]. In this work, we have measured particularly Mαβ, Mγ and total M-shell cross sections for tungsten and thallium induced by carbon ions of energy rang 2.6 MeV to 5 MeV on respective thin targets. The obtained new experimental data of Mαβ, Mγ and total M-shell cross section are compared to the theoretical predictions given in the frame work of the models Plane Wave Born Approximation (PWBA) [3], ECPSSR [4] and the Semi-Classical Approximation with united atom (SCA-UA) and separated atom (SCA-SA) correction [5]. References [1] A. Haidra, S. Ouziane, S. Fazini´c, Nucl. Instr. and Meth. B 417 (2018) 26-31. [2] A. Haidra, S. Fazini´c, S. Ouziane, I. Zamboni, D. Banas, Nucl. Instr. and Meth. B (2018) to be published, available online. [3] E. Merzbacher, H.W. Lewis, Encyclopaedia of Physics, S. Flugge (1958), Vol. 34, p166. [4] W. Brandt, G. Lapicki, Phys. Rev. A 23 (1981) 1717-1729. [5] D. Trautmann and T. Kauer, Nucl. Instr. And Meth. B (42), 1989, 449

M-shell cross section ; W ; Tl ; Carbon ions

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