Radiative lifetime measurement of the,,,, andexcited states of helium
- 1 August 1978
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 18 (2) , 559-570
- https://doi.org/10.1103/physreva.18.559
Abstract
The lifetimes of the , , , , and , states of He have been determined experimentally to be 54.5±0.8, 16.7±0.8, 36.4±1.2, 67±10, and 142±20 nesc, respectively. The measurements were made at several incident electron energies using a pulsed-electron time-delayed-coincidence technique.
Keywords
This publication has 33 references indexed in Scilit:
- Mean Lives of Some Excited Levels in He i*Journal of the Optical Society of America, 1970
- Excitation and relaxation effects on laser action in heliumJournal of Physics B: Atomic and Molecular Physics, 1969
- Radiative Lifetimes and Collisional Cross Sections for Xe i and iiJournal of the Optical Society of America, 1969
- Excitation of the3D1,3and4F1,3Levels of Helium by Direct Electron Impact, and4P1→4F1,3Collisional TransferPhysical Review B, 1969
- Calibration of time-to-amplitude convertersNuclear Instruments and Methods, 1968
- Excitation of the 4F States of Helium*Journal of the Optical Society of America, 1967
- Direct determination of excited-state lifetimes by electron impact excitation and single-photon counting techniquesProceedings of the Physical Society, 1967
- Radiative Lifetimes and Excitation Mechanisms in HeliumPhysical Review B, 1965
- Direct measurements of the lifetimes of excited states of neutral heliumProceedings of the Physical Society, 1964
- Excitation processes in heliumProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1960