Pressure dependence of the Mg $3s4s^3{S}_1\to 3s3p^3{P}_{0,1,2}$ transition in superfluid ${}^4$He

I. Baumann, A. Breidenassel, C. Zühlke +4

The pressure shifts of the $3s4s^3{S}_1\to 3s3p^3{P}_{0,1,2}$ transition of magnesium atoms immersed in superfluid helium have been measured at $(1.3\pm 0.1)$K between saturated vapou…