Abstract. Using a 40 cm curved mica crystal spectrograph of the transmission (Cauchois) type, a detailed study of the L emission spectrum of cerium 58 has been made. Four new diagram lines at 1899.7 x.u., 1921.2 x.u., 2008.0 x.u. and 2162.6 x.u., corresponding, in that order, to the forbidden transition L_IO_I and the quadrupole transitions L_IN_IV,V, L_IIn_VI,VII and L_IIIN_VI,VII have been observed for the first time. The measurements of other dipole and quadrupole transitions have been made with a view to comparing them with those of earlier workers.

Print publication: Issue 10 (October 1970)