Magnetic Quadrupole Line Intensities

Abstract

view Abstract Citations (71) References (12) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Magnetic Quadrupole Line Intensities Garstang, R. H. Abstract A tensor operator formalism is given for the calculation of magnetic quadrupole transition probabilities. The method is applied to the s2 1S0-sp 3p2 transition in the general case and then to eight individual cases (He i, 0 vii, Be i, Si xi, Mg i, Zn i, Cd i, and Hg i). It is shown that, in the first six of these, magnetic quadrupole radiation is more important than nuclear-spin-induced electric dipole radiation, the converse being true for Cd i and Hg i. Magnetic quadrupole radiation in the transition appears to have been observed in the laboratory for Zn i, probably contributes to the laboratory Cd i line, and is largely responsible for the Mg i line in NGC 7027. Publication: The Astrophysical Journal Pub Date: May 1967 DOI: 10.1086/149179 Bibcode: 1967ApJ...148..579G full text sources ADS |