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Then and A beam device might be designed such that somewhat less than or 55 of a period of this harmonic motion occurred within each of the deflecting fields (see Fig. 15). Only flop-out experiments can be performed with these field configurations if the detector is placed on the axis as in Fig. 15a, b. 15. (a) A beam device designed for the period of the harmonic motion occurring in the deflection magnet’s field. (b) A beam device designed for the period of the harmonic motion occurring in the deflection magnet’s field.

MOCKLER setting the oven and detector from the machine axis. Although the slowest atoms will be eliminated from the beam if the oven and detector are both on the machine axis, the slow atoms can be observed, together with the consequent narrower line, by offsetting the oven slit and detector (see Fig. 12). In this arrangement only emission or absorption is observed instead of both as in the usual circumstance. C. The Deflecting Fields (6, 7) Most atomic beam spectrometers employ iron magnets designed to produce the same field as two parallel wires carrying current in opposite directions.

A complete solution may be obtained if certain assumptions are made. We will proceed to enumerate these assumptions. (a) The two states involved in the transition are well isolated from other states. (b) The diagonal elements of the interaction Hamiltonian are zero. (c) The Rtom sees a finite portion of a cosine wave as it passes through the radiation field region. It enters the field at t = 0 and leaves at time r. A substantial simplification can be made in the calculaticn without serious discrepancies in the results if it is assumed that the dipole moment interacts with a rotating field rather than an oscillating field.

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