No abstract

No abstract

The level of accuracy reached in lhe recent Lamb shift measurements for the multicharged ions requires the introduction of the non-wonant corrections which take in10 m u n f the deviation of the natural line profiles fmm fhe simple Lorena form, The frequency -, corresponding to the maximum of the fresuency distribution, differs from the energy difference A E %= = A € + 6. where S is the non-resonant comtiion. The value of S, dculated for the process Zs + y + 2mp -+ Is + y' used recently for the Lamb shift measurement in hydrogenic phosphorus, is 6 = -4.47 x eV, while lk measured Uansition energy is: A E = E1,,,, -€21 = 2.23133(12) eV. This means that the conwion 6 becomes noticeable. However, lhe %2pl/a energy shift measured in Li-like uranium is not affected by this wnection.