Polarisation of Resonance Radiation in Magnetic Fields

Details Polarisation of Resonance Radiation in Magnetic Fields Polarisation of Resonance Radiation in Magnetic Fields

Dec 1924

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1924natur.114..931e&link_type=abstract

Nature, Volume 114, Issue 2878, pp. 931-932 (1924).

Computer Science

2

Scientific paper

WOOD and Ellett have shown that weak magnetic fields may greatly affect the polarisation of resonance radiation, the nature of the effect depending upon the relative orientation of the magnetic field and the electric vector of the exciting light. In the absence of a magnetic field, the resonance radiation emitted in the direction of the axis of Z by an atom excited by a beam of light parallel to the X axis and polarised with its electric in-tensity parallel to the Y axis is found to be more or less completely polarised, the per cent, polarisation, defined as Ey-Ex/Ey + Ex varying from 90 in the case of mercury to 16.3 for sodium excited by both D1 and D2. The effect of a magnetic field parallel to the Z axis is to reduce this polarisation-the law of decay being quite accurately represented by an equation of the form

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