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Oct 1976

Volume 5, Issue 4, pp. 835-1156


Nuclear Spins and Moments

Gladys H. Fuller

J. Phys. Chem. Ref. Data 5, 835 (1976); http://dx.doi.org/10.1063/1.555544 (258 pages)

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A summary of nuclear‐moment values and an index, arranged by Z and A is presented. The summary value is based on the experimentally determined values of the nuclear moments which have been listed in tables according to the techniques used. Each table is preceded by a short introduction describing the experimental technique involved and the method of calculating the moment from the measured quantities. References are given for all data quoted. The date for the last systematic literature search is included with each table. This tabulation supplements and revises the earlier tables which appeared in Nuclear Data Tables, Volume A5, 433−612(1969).
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21.10.Ky Electromagnetic moments
21.10.Hw Spin, parity, and isobaric spin

Nuclear moments and moment ratios as determined by Mössbauer spectroscopy

J. G. Stevens and B. D. Dunlap

J. Phys. Chem. Ref. Data 5, 1093 (1976); http://dx.doi.org/10.1063/1.555541 (30 pages) | Cited 2 times

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Values are given for Mössbauer effect measurements of nuclear magnetic moments, spectroscopic quadrupole moments, ratios of moments between low lying excited states and the ground state of the same isotope, and ratios of moments between states of different isotopes. Adopted values for moments, obtained by direct selection of selection of specific results or by an averaging process, are presented. The literature has been covered through December, 1974.
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21.10.Ky Electromagnetic moments
33.80.-b Photon interactions with molecules
76.80.+y Mössbauer effect; other γ-ray spectroscopy

Rate coefficients for ion‐molecule reactions I. Ions containing C and H

L. Wayne Sieck and Sharon G. Lias

J. Phys. Chem. Ref. Data 5, 1123 (1976); http://dx.doi.org/10.1063/1.555542 (24 pages) | Cited 2 times

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A compilation is presented of experimentally determined bimolecular and thi order rate coefficients for the reactions of hydrocarbon ions with neutral molecules in the vapor phase. The literature covered is from 1960 to the present, and both positive and negative ions are considered. Four hundred and fifty‐eight separate reaction‐pairs are tabulated, and the ionic reaction products and experimental conditions are specified wherever possible. Preferred values are suggested for a number of these processes.
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82.30.Fi Ion-molecule, ion-ion, and charge-transfer reactions
82.20.Pm Rate constants, reaction cross sections, and activation energies

Microwave spectra of molecules of astrophysical interest XI. Silicon Sulfide

Eberhard Tiemann

J. Phys. Chem. Ref. Data 5, 1147 (1976); http://dx.doi.org/10.1063/1.555543 (10 pages) | Cited 2 times

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The available data on the microwave spectrum of silicon sulfide are critically reviewed for information applicable to radio astronomy. Molecular data such as rotational constants, electric dipole moment and hyperfine coupling constant are tabulated. Observed rotational transitions are presented for all measured isotopic forms of SiS. These data have been analyzed in order to predict rotational transition of the ground vibrational state up to 300 GHz. From the given rotational constants transition frequencies in excited vibrational states can be calculated with little loss in accuracy.
Error limits have been taken from the original literature for each measured frequency. The predicted transition frequencies are given with uncertainties which represent the 90 percent confidence limit.
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33.20.Bx Radio-frequency and microwave spectra
33.15.Mt Rotation, vibration, and vibration-rotation constants
98.38.Bn Atomic, molecular, chemical, and grain processes
98.38.Er Interstellar masers
98.58.Bz Atomic, molecular, chemical, and grain processes
98.58.Ec Interstellar masers
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