Physics – General Physics
Scientific paper
May 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976phrva..13.1805p&link_type=abstract
Physical Review A - General Physics, 3rd Series, vol. 13, May 1976, p. 1805-1816.
Physics
General Physics
7
Atomic Excitations, Far Ultraviolet Radiation, Hydrogen Atoms, Ionization Cross Sections, Photoionization, Shock Heating, Gas Dissociation, Gas Mixtures, Neon, Photoabsorption, Pressure Effects, Shock Tubes, Temperature Measurement
Scientific paper
The paper reports an experiment which is part of a program to measure the absolute values of the atomic photoionization cross sections of astrophysically abundant elements, particularly in stars and planetary atmospheres. An aerodynamic pressure-driven shock tube constructed from stainless steel with a quadratic cross section was used to measure the photoionization cross section of H I at 19 wavelength points from 910 to 609 A with experimental uncertainties between 7 and 20%. The shock tube was used to produce fully dissociated hydrogen and neon mixtures for the photoabsorption measurements.
Kohl John L.
Palenius H. P.
Parkinson William H.
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