Measurement of the electric quadrupole amplitude in atomic thallium $6P_{1/2}\to 6P_{3/2}$ transition using electromagnetically induced transparency

Wei Ling Chen, Wei Min Hsu, Li Bang Wang +1

We report a measurement of the transition amplitude ratio $\chi$ of an electric quadrupole ($E2$) to a magnetic dipole ($M1$) of the $6P_{1/2}\to 6P_{3/2}$ transition in atomic…