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At least 1,279 records · Page 71
All sourcesNASA NTRSDOE OSTI
NASA NTRS1973

Comments on the paper 'The internal structure of the geomagnetic neutral sheet' by K. Schindler and N. F. Ness

Criticism of Schindler and Ness' (1972) multiple neutral point hypothesis, noting that there are several alternative interpretations of the distribution of magnetic field values observed by Explorer 34. It is shown that it is possible to interpret the tail magnetic field observations of Schindler and Ness without requiring neutral point encounters. On the other hand, if it is assumed that the observed field variations were due to neutral point encounters, there may be a single oscillating neutral point, or there may be multiple neutral points in time or in space.

Russell, C. T.↗
NASA NTRS1974

Dipole and quadrupole integrals for the C I, N I, and O I sequences

The Coulomb approximation tables of Oertel and Shomo, together with binding-energy values obtained by a screening approximation, have been used to produce values of the dipole and quadrupole radial integrals needed in obtaining transition probabilities for ions of six, seven, and eight electrons. Some comparisons with more rigorously calculated values show that the present values are quite accurate, especially for ions of higher atomic number.

Kastner, S. O.↗
NASA NTRS1974

Transitions 2s/2/ 2p/k/ - 2s 2p/k+1/ of the F I, O I, and N I isoelectronic sequences

Transitions of the type 2s/2/ 2p/k/ - 2s 2p/k+1/ have been identified for the elements from titanium through nickel for ions of the fluorine, oxygen, and nitrogen isoelectronic sequences. Wavelengths, visual intensity estimates, and energies are given. The energy differences of levels of the ground configuration are compared with predictions based on semiempirical equations derived by Edlen. Some of the lines of these isoelectronic sequences should be strong lines in solar-flare spectra.

Doschek, G. A.↗