Effect of Surface Condition on the Fluorescence and Surface Photoconductivity of Anthracene
When large crystals of anthracene are polished with abrasive powders and solvents, and are then exposed to air or oxygen for several days, the intensity of fluorescence and the hard vacuum value of th...
When large crystals of anthracene are polished with abrasive powders and solvents, and are then exposed to air or oxygen for several days, the intensity of fluorescence and the hard vacuum value of th...
Proton and Nitrogen Magnetic Resonance Spectra and Structure of Nitramide and Nitrourethane
Nuclear magnetic resonance spectra of both protons and N14 nuclei in nitrourethane and nitramide have been studied. Spectra are interpreted in terms of the structures RNHNO2 and H2NNO2 for nitrouretha...
Nuclear magnetic resonance spectra of both protons and N14 nuclei in nitrourethane and nitramide have been studied. Spectra are interpreted in terms of the structures RNHNO2 and H2NNO2 for nitrouretha...
Scattering of Low-Energy H— Ions in Helium, Neon, and Argon
J. Chem. Phys. 26, 1446 (1957); doi:10.1063/1.1743562
Issue Date: June 1957
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Elastic and inelastic cross sections have been measured for the scattering of H— ions in helium, neon, and argon gases, at incident ion energies in the range 5 ev to 350 ev. One term interaction potentials of the form V=—K/rn were calculated from the low-energy elastic cross sections. These potentials were: for H— and He, V=—2.90/r3.01 ev for r=1.30 A to 1.90 A; for H— and Ne, V=—4.17/r2.80 ev for r=1.00 A to 1.78 A; and for H— and A, V=—7.82/r3.40 ev for r=1.23 A to 2.12 A. The observed inelastic cross sections are interpreted as cross sections for electron detachment from H—; they show a similar behavior with ion energy W in the three cases, appearing at W between 0 and 5 ev, rising rapidly to W=40 ev, and then rising very slowly to W=350 ev. Evidence was found for positive ion formation in H— collisions with Ne and A atoms at ion energies above 100 ev.
The Journal of Chemical Physics is copyrighted by The American Institute of Physics.
| History: | Received October 22, 1956 |
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http://link.aip.org/link/?JCPSA6/26/1446/1 |
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REFERENCES (8)
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