Time-resolved extreme ultraviolet emission from a highly ionized lithium capillary discharge Marconi, Mario Carlos ; Rocca, Jorge J. "This research was supported by the National Science Foundation grant No. ECS-8606226 and a National Science Foundation Presidential Young Investigator Award (to J. J. Rocca). M. C. Marconi was supported by a fellowship from Universidad Nacional de Buenos Aires and Consejo Nadonal de Investigaciones Cientificas y Tecnicas de la Republica Argentina." A fast discharge current pulse (50 ns FWHM) was used to create a highly ionized plasma in a 500-μm-diam lithium hydride capillary 3.8 cm in length. Time-resolved extreme ultraviolet spectra of the capillary plasma show simultaneous line emission from highly ionized (O VI) and singly ionized (O II) species, indicating the existence of a hot-core plasma (Te>25 eV) surrounded by a significantly cooler plasma near the walls. The intensity of the 72.9 nm emission corresponding to the Li III 3-2 transition was observed to increase during the decay of the current pulse, consistent with excitation by electron-ion recombination. The results are relevant to the possibility of amplification of extreme ultraviolet radiation in a discharge-pumped device. Colorado State University. Libraries 1989 text ; image application/pdf ECEmcm00063.pdf FACFECEN100475ARTI eng c1989 American Institute of Physics
Time-resolved extreme ultraviolet emission from a highly ionized lithium capillary discharge
Marconi, Mario Carlos ; Rocca, Jorge J.
"This research was supported by the National Science Foundation grant No. ECS-8606226 and a National Science Foundation Presidential Young Investigator Award (to J. J. Rocca). M. C. Marconi was supported by a fellowship from Universidad Nacional de Buenos Aires and Consejo Nadonal de Investigaciones Cientificas y Tecnicas de la Republica Argentina."
A fast discharge current pulse (50 ns FWHM) was used to create a highly ionized plasma in a 500-μm-diam lithium hydride capillary 3.8 cm in length. Time-resolved extreme ultraviolet spectra of the capillary plasma show simultaneous line emission from highly ionized (O VI) and singly ionized (O II) species, indicating the existence of a hot-core plasma (Te>25 eV) surrounded by a significantly cooler plasma near the walls. The intensity of the 72.9 nm emission corresponding to the Li III 3-2 transition was observed to increase during the decay of the current pulse, consistent with excitation by electron-ion recombination. The results are relevant to the possibility of amplification of extreme ultraviolet radiation in a discharge-pumped device.
Colorado State University. Libraries
1989
text ; image
application/pdf
ECEmcm00063.pdf
FACFECEN100475ARTI
eng
c1989 American Institute of Physics