The total scattering cross sections for H2+H2, D2+D2, and HD+HD for relative collision energies below 10 meV

Dean L. Johnson; R. S. Grace; J. G. Skofronick

doi:10.1063/1.438209

journal article Dec 01, 1979

The total scattering cross sections for H2+H2, D2+D2, and HD+HD for relative collision energies below 10 meV

Dean L. Johnson R. S. Grace J. G. Skofronick

The Journal of Chemical Physics Vol. 71 No. 11 pp. 4554-4569 · AIP Publishing

View at Publisher Save 10.1063/1.438209

Abstract

Relative total scattering cross sections for normal H2+normal H2, para-H2+para-H2, normal D2+normal D2, ortho-D2+ortho-D2, and HD+HD were measured at energy below 10 meV by colliding particles from two inclined nozzle beams. Cross sections for the H2+H2 pairs were measured over a relative velocity range of 200–1450 m/s; the normal H2+normal H2 results suggest a l=3 orbiting resonance near 375 m/s while the para-H2+para-H2 results have a l=4 orbiting resonance near 585 m/s. This latter resonance has a peak energy of 1.79 meV and a FWHM of 1.05 meV. The D2+D2 cross sections were measured over the velocity range of 190 to 1000 m/s and a minimum between the l=4 and l=5 orbiting resonances was observed. Some preliminary measurements on HD+HD over the range of 250–1250 m/s indicate a possible l=4 orbiting resonance near 300 m/s. The experimental work compares favorably to cross sections calculated from a theoretical potential.

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Metrics

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Citations

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References

Details

Published: Dec 01, 1979
Vol/Issue: 71(11)
Pages: 4554-4569

Authors

D

Dean L. Johnson

Department of Physics, The Florida State University, Tallahassee, Florida 32306

R

R. S. Grace

Department of Physics, The Florida State University, Tallahassee, Florida 32306

J

J. G. Skofronick

Department of Physics, The Florida State University, Tallahassee, Florida 32306

Cite This Article

Dean L. Johnson, R. S. Grace, J. G. Skofronick (1979). The total scattering cross sections for H2+H2, D2+D2, and HD+HD for relative collision energies below 10 meV. The Journal of Chemical Physics, 71(11), 4554-4569. https://doi.org/10.1063/1.438209

The total scattering cross sections for H2+H2, D2+D2, and HD+HD for relative collision energies below 10 meV

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