High-precision spectroscopy of hydrogen molecular ions
*
Zhong Zhen-Xiang
a)
, Tong Xin
a)
, Yan Zong-Chao
a),
b),
c)†
, Shi Ting-Yun
a),
b)‡
State selective [3+1′] resonance-enhanced threshold-photoionization scheme used to generate HD
+
ions in the rovibrational ground state.