Lifetimes of Rydberg states of Eu atoms<xref ref-type="fn" rid="cpb141497fn1">*</xref>

Lifetimes of Rydberg states of Eu atoms*

Jing Hua^a),^b), Ye Shi-Wei^a),^b), Dai Chang-Jian^a),^b)

Fig.#cod#x0A0;1. The schematic diagram of the experimental setup.