On the Natural Shift of a Resonance Frequency

Download or read book On the Natural Shift of a Resonance Frequency written by Robert James Harrach and published by . This book was released on 1966 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: The natural resonance frequency shift, caused by the transition-inducing radiation field, is examined for a magnetic dipole transition between hyperfine structure levels in the ground state of a thallium atom.A calculation predicts, for an atomic beam experiment, a natural shift magnitude of 1.4 parts in 10 to the 10th of the thallium resonancefrequency, per mW/Oe.In the experiment, frequency shifts caused by overlap of neighboring resonances were observed, but the natural shift was unresolved, indicating that its size is more than an order of magnitude below the calculated value.Subsequently it has been shown that the natural shift was inhibited by the particular radiation field mode used in the experiment.When the theory correctly takes this mode into account, the calculated natural frequency shift is consistent with the experimental results.(Author).