Abstract
A technique is developed for lifetime measurements of partially autoionizing levels using the time of flight method of the beam-foil and two-foil techniques at various beam energies. The decay curve of the 5.17-keV peak in heliumlike vanadium shows the presence of nonidentical decay constants in beam single-foil experiment in contrast to the growth structures in beam-two-foil measurements at different beam energies. Analysis of such data has not only confirmed the satellite blending problem of the M2 line 1s{sup 2} {sup 1}S{sub 0}-1s2p {sup 3}P{sub 2}{sup o}, but has also led to the mean lifetime measurement of the partially autoionizing satellite level of the 1s2s2p {sup 4}P{sub 5/2}{sup o} line in lithiumlike vanadium. The lifetime so measured is compared with theoretical calculations.
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