Showing papers by "H. G. Berry published in 1976"
TL;DR: In this article, the authors measured ClVI, Cl VII, and Ar VII, Ar VIII decay times at wavelengths in the range 50-550 \AA{} using the beam-foil technique.
Abstract: We have measured ClVI, Cl VII, and Ar VII, Ar VIII decay times at wavelengths in the range 50-550 \AA{} using the beam-foil technique. The detection system was developed to obtain a spatial resolution of about 50 \ensuremath{\mu}m along the beam, allowing very short lifetimes of the order of a few picoseconds to be measured. Our results are compared with recent theoretical results and other experimental data in the Mg I and Na I isoelectronic sequences.
13 citations
01 Jan 1976
TL;DR: In this article, a beam-foil study of boron at wavelengths between 400 A and 1200 A was carried out to identify many transitions within the doubly-excited quartet system of B III.
Abstract: In a beam-foil study of boron at wavelengths between 400 A and 1200 A, we have been able to identify many transitions within the doubly-excited quartet system of B III. These identifications are confirmed in some cases by transitions in the near ultraviolet observed from the same terms. We shall compare our experimental term energies with recent calculations for this isoelectronic sequence and discuss recent observations in other series members. We list many newly observed transitions of B IV.
12 citations
01 Jan 1976
TL;DR: In this article, the application of beam-foil spectroscopy to highly-stripped heavy ions was discussed, where transitions observed in the near ultraviolet between states of high principal quantum number and orbital angular momentum l have been fully resolved.
Abstract: The application of beam-foil spectroscopy to highly-stripped heavy ions will be discussed. Transitions observed in the near ultraviolet between states of high principal quantum number and orbital angular momentum l have been fully resolved. For such transitions involving non-closed electron cores, the number of transitions within a given n-n′ system is greatly increased (up to 25 transitions have been resolved in some cases) and we present some analyses in the case of vanadium ions.
5 citations
TL;DR: In this paper, the beamfoil technique was used to measure the radiative decay times of four times ionized vanadium using the beam-foil method, and the derived mean lives were compared with other members of the K I isoelectronic sequence.
Abstract: We have measured radiative decay times in four times ionized vanadium using the beam-foil technique. The derived mean lives are compared with other members of the K I isoelectronic sequence. Some new transitions have also been observed.
3 citations