${\rm{MeV}}\mbox{-}\left( {\rm{C}} \right)_{\rm{2}}^{\rm{ + }} $-ION-INDUCED Cu K X-RAY EMISSION

Cu K X-ray spectra for a copper target bombarded with ion beams of 1.4 [Formula: see text] ions, 2. 8 [Formula: see text] ions, and 3.0 MeV-Si+ ions have been measured with a Si(Li) detector. It is found that the Cu K X-ray spectrum for [Formula: see text] ion bombardments is almost same as that for C+ ion bombardments, whereas the spectrum for Si+ ion bombardments has a broad peak of MO X-rays in the low-energy region. The values of Kα/Kα+β for the Cu K X-rays are very close each other within the experimental uncertainty in these three cases. Thus, no multi-ionization effect is observed in the K X-ray emission by [Formula: see text] beam bombardments.