Spectroscopy of highly doubly-excited states of helium through dielectronic recombination
- 14 March 1995
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic, Molecular and Optical Physics
- Vol. 28 (5) , L147-L153
- https://doi.org/10.1088/0953-4075/28/5/007
Abstract
We report a spectroscopic determination of dielectronic recombination resonances with hydrogen-like helium. An energy resolution of 0.3 eV FWHM was achieved through the use of a cooled ion beam in the CRYRING storage ring. First theoretical results, including correlation to all orders, for the Delta n=1 and Delta n=2 resonances are presented. Unexpectedly, it was found that the Delta n=2 resonances are dominated by certain 3F0 doubly-excited states, in contrast to the results for Delta n=1 transitions.Keywords
This publication has 18 references indexed in Scilit:
- Calculation of doubly excited states of helium with a finite discrete spectrumPhysical Review A, 1994
- Measurement of dielectronic recombination inHe+ionsPhysical Review A, 1993
- Dielectronic recombination of hydrogenlike oxygen in a heavy-ion storage ringPhysical Review Letters, 1990
- Photoionisation studies of autoionising states of helium between 69 and 77 eVJournal of Physics B: Atomic, Molecular and Optical Physics, 1989
- Photoionization cross section of helium for photon energies 59-67 eV: TheRydberg series of autoionizing resonancesPhysical Review A, 1984
- Extraction of accurate autionisation widths from the emission spectrum of doubly-excited HeJournal of Physics B: Atomic and Molecular Physics, 1983
- Dielectronic recombination and its applications in astronomyReports on Progress in Physics, 1980
- Ejected electron spectroscopy of autoionizing states excited by low energy electron impactJournal of Physics B: Atomic and Molecular Physics, 1975
- A General Formula for the Estimation of Dielectronic Recombination Co-Efficients in Low-Density Plasmas.The Astrophysical Journal, 1965
- Delectronic Recombination and the Temperature of the Solar Corona.The Astrophysical Journal, 1964