Precise Determination of the 1s Lamb Shift in Hydrogen-Like Lead and Gold Using Microcalorimeters

2017
Quantum electrodynamicsin very strong Coulomb fields is one scope which has not yet been tested experimentally with sufficient accuracy to really determine whether the perturbative approach is valid. One sensitive test is the determination of the 1s Lamb shiftin highly-charged very heavy ions. The 1s Lamb shiftof hydrogen-like lead (Pb81+) and gold (Au78+) has been determined using the novel detector concept of silicon microcalorimeters for the detection of hard x-rays. The results of eV for lead and eV for gold are within the error barsin good agreement with theoretical predictions. To our knowledge, for hydrogen-like lead, this represents the most accurate determination of the 1s Lamb shift.
    • Correction
    • Source
    • Cite
    • Save
    51
    References
    17
    Citations
    NaN
    KQI
    []
    Baidu
    map