Results 291 to 300 of about 308,069 (340)
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, 2001
For molecules containing second row atoms, unacceptable errors have been found in extrapolating dissociation energies calculated with the standard correlation consistent basis sets to the complete basis set limit.
T. Dunning, K. Peterson, A. Wilson
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For molecules containing second row atoms, unacceptable errors have been found in extrapolating dissociation energies calculated with the standard correlation consistent basis sets to the complete basis set limit.
T. Dunning, K. Peterson, A. Wilson
semanticscholar +1 more source
Correlations in the Motion of Atoms in Liquid Argon
, 1964A system of 864 particles interacting with a Lennard-Jones potential and obeying classical equations of motion has been studied on a digital computer (CDC 3600) to simulate molecular dynamics in liquid argon at 94.4\ifmmode^\circ\else\textdegree\fi{}K ...
A. Rahman
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Half-Lives of Argon-37, Argon-39, and Argon-42
Science, 1965The half-lives of three argon isotopes have been carefully determined, with the following results: Ar 37 , 35.1 ± 0.1 days; Ar 39 , 269 ± 3 years; Ar 42 , 32.9 ± 1.1 years. By combining the Ar 42 value with earlier data, a cross section of 0.5 ±
O. A. Schaeffer +2 more
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Potassium-argon and argon-argon dating
1997Potassium (Latin kalium from the Arabic gali meaning alkali) is an element with relative atomic mass of 39.0983 and atomic number 19. A silvery white and soft, very reactive alkali metal, it resembles Na. Its relative density is 0.86, its melting point is 63.5°C and its boiling point is 770°C.
H.-G. Attendorn, R. N. C. Bowen
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Mobility of Argon ions in argon
Physics Letters A, 1967Abstract The mobility values of argon ions in argon have been measured using a measuring technique which permits simultaneous measurement of the drift velocity of ions together with their identification by means of a quadrupole mass spectrometer. The three ions present in argon have been identified as A + , A + 2 , A ++ and their mobilities are ...
J.M. Madson, H.J. Oskam
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Radially resolved rotational temperatures in nitrogen-argon, oxygen-argon, air-argon and argon ICPs
Spectrochimica Acta Part B: Atomic Spectroscopy, 1988Abstract Radially resolved rotational temperatures of a 2-kW ICP operated at atmospheric pressure with Ar, N 2 , O 2 and air as outer gases were determined using N 2 + and OH as thermometric species. The temperatures, measured 7 mm over the load coil, varied between 4000 and 7000 K. The reliability of these measurements is discussed.
F. Leis +2 more
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2018
Argon–argon dating is a radioisotopic method based on the natural, spontaneous radioactive decay of an isotope of potassium, 40K, at a known rate to produce an isotope of argon, 40Ar. This method is one of the most versatile, precise and accurate of all radioisotopic dating tools applied to volcanic materials.
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Argon–argon dating is a radioisotopic method based on the natural, spontaneous radioactive decay of an isotope of potassium, 40K, at a known rate to produce an isotope of argon, 40Ar. This method is one of the most versatile, precise and accurate of all radioisotopic dating tools applied to volcanic materials.
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Archives of Ophthalmology, 1981
We developed an endolaser probe that is capable of delivering argon laser light for photocoagulation of retinal breaks or vascular fronds. Energy is transmitted through a fiberoptic cord from a console outside of the surgical area to an endolaser probe inside the operating suite. The probe can be fired into fluid- or gas-filled media.
G A, Peyman, T C, Salzano, J L, Green
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We developed an endolaser probe that is capable of delivering argon laser light for photocoagulation of retinal breaks or vascular fronds. Energy is transmitted through a fiberoptic cord from a console outside of the surgical area to an endolaser probe inside the operating suite. The probe can be fired into fluid- or gas-filled media.
G A, Peyman, T C, Salzano, J L, Green
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, 1999
Correlation consistent and augmented correlation consistent basis sets have been determined for the second row atoms aluminum through argon. The methodology, originally developed for the first row atoms [T. H. Dunning, Jr., J. Chem. Phys.
David, E. Woon, Thorn, H. Dunning
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Correlation consistent and augmented correlation consistent basis sets have been determined for the second row atoms aluminum through argon. The methodology, originally developed for the first row atoms [T. H. Dunning, Jr., J. Chem. Phys.
David, E. Woon, Thorn, H. Dunning
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Thermal conductivity of mixtures of argon‐helium, argon‐nitrogen, and argon‐neon
AIChE Journal, 1971AbstractA secondary concentric cylinders cell was used to measure the thermal conductivity of binary mixtures of argon‐nitrogen, argon‐helium, and argon‐neon approximately 20, 40, 60, and 80 vol. % at 75°C, and pressures to 2,800 atm. Measurements were made also on the pure gases argon and nitrogen.
Jon N. Peterson +2 more
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