Abstract
Abstract
We report on a measurement of the transition amplitude ratio χ of an electric quadrupole (
E
2
) to a magnetic dipole (
M
1
) of the
6
P
1
/
2
→
6
P
3
/
2
transition in atomic thallium. We utilized the electromagnetically induced transparency mechanism and the sideband-bridging technique to resolve the isotopic transitions and their hyperfine manifold. Our measurement gave
χ
205
=
0.2550
(
20
)
(
7
)
for 205Tl, and
χ
203
=
0.2532
(
73
)
(
7
)
for 203Tl, which was measured for the first time. Our results provide a reference point for the theoretical calculation of atomic structures, and new input for the long dispute on the atomic thallium parity non-conservation measurements.
Funder
Ministry of Science and Technology, Taiwan
Subject
Condensed Matter Physics,Atomic and Molecular Physics, and Optics