FEASIBILITY OF PHOTOIONIZATION OF MULTICHARGED IONS AND A FIRST TEST OF A PHOTON-BEAM ION-SOURCE (PHOBIS) WITH THE RIKEN EBIS (REBLS)

The importance, feasibility and method for measuring the photo-ionizat ion cross-section of multi-charged ions using the RIKEN Electron Beam Ion Source (REBIS) is discussed. Specifically the cases for the 2 s an d 1 s photo-ionization of Ar14+ is explored. It is concluded that such measurements are possible today and in future (3(rd) generation) sync hrotron radiation facilities, and will be carried out upon modificatio ns of the apparatus. Also described, is the first test of a PHOton Bea m Ion Source using REBIS. It's potential advantage over other ion sour ces is that in the ion production mechanism photoionization the recoil ions obtain only near thermal energies to making ion beams with very low energy spread possible.