The diamagnetic effect on the intensity of helium radiation lines

Abstract

The changes of the radiation matrix elements, probabilities, and line intensities in a strong magnetic field are studied for the helium lines, corresponding to transitions between Zeeman manifolds with |m| [Formula: see text] 3. The effect of a selective field action on radiation lines is discovered that may reduce and enhance corresponding matrix elements and induce the dipole-forbidden transitions with the selection rule |Δl| = 3. PACS Nos.: 32.60+i, 32.70Fw, 32.30-r