Volume 8, Issue 1, January 1979
Index of content:
8(1979); http://dx.doi.org/10.1063/1.555591View Description Hide Description
The energy levels of the titanium atom in all of its stages of ionization, as derived from the analyses of atomic spectra, have been critically compiled. In cases where only line classifications are reported in the literature, level values have been derived. Term designations, experimental g‐values, and ionization energies are included. Calculated percentages of the two leading components of eigenvectors of the levels are given.
8(1979); http://dx.doi.org/10.1063/1.555592View Description Hide Description
The published data on the spectrum of the neutral atom of boron are complied and presented. In one table 164 lines in the range 36010−993 Å are listed with their intensities and classifications. A second table gives 92 levels with the numerical values of the energy.
8(1979); http://dx.doi.org/10.1063/1.555593View Description Hide Description
Tabulations are presented of relativistic Hartree‐Fock atomic form factorsF (x,Z), for values of x (=sin(ϑ/2)/λ from 0.01 to 109 Å−1, for all elements Z=1 to 100. For Z=1, F (x,Z) is given by the exact expression of Pirenne. For Z=2 to 98, x=0.01 to 2.0 Å−1, the tabulated values are those of Cromer and Waber given in the I n t e r n a t i o n a l T a b l e s f o r X−R a y C r y s t a l l o g r a p h y (Vol. IV, 1974), based in part on the work of Doyle and Turner. For Z=21 to 92, x=2.2 to 6.0 Å−1, the present tables are based on the values of Doyle and Turner and additional values (Z=44,60,68, and 74) as given by O/verbo/. For Z=3 to 20.x=2.2 to 45 Å−1, Z=21 to 92,x=62 to 45 Å−1 the tables are interpolated from values given for 36 elements by O/verbo/, extended to x=109 Å−1 using O/verbo/’s corrections to the Bethe‐Levinger K‐shell expression. The remainder of the table is filled in by interpolation and extrapolation, guided for high x‐values by the Bethe‐Levinger result. Tables of relativistic coherent (Rayleigh) scattering cross sections, obtained by numerical integration of the Thomson formula weighted by F 2(x,Z), are presented for all elements Z=1 to 100, for photon energies 100 eV (λ=124 Å=12.4 nm) to 100 MeV (λ=0.000 124 Å=12.4 fm). Departures from the nonrelativistic coherent scattering cross sections tabulated in J. Phys. Chem. Ref. Data 4, 471 (1975) are less than 1% for Z<20. However for a high‐Z element such as lead, for example, the relativistic coherent scattering cross section is systematically higher by less than 0.4% below 1 keV, by 8% at 100 keV and by 13% above 1 MeV.
8(1979); http://dx.doi.org/10.1063/1.555589View Description Hide Description
The available data of the microwave spectrum of vinyl cyanide are critically reviewed and tabulated. Molecular data such as rotational constants, centrifugal distortion constants, hyperfine coupling constants, dipole moments, and structural parameters are tabulated. Rotational transitions from 400 MHz to 200 GHz, which are likely to be of interest to radio astronomy, are calculated and tabulated along with their estimated 95% confidence limits.
Molten Salts: Volume 4, Part 4 Mixed Halide Melts Electrical Conductance, Density, Viscosity, and Surface Tension Data8(1979); http://dx.doi.org/10.1063/1.555590View Description Hide Description