State-selective ion mobility measurement for NHn+ (n = 1 - 3) ions in helium gas at low temperature

29th International Conference on Photonic, Electronic, and Atomic Collisions

Mori, K.^1 ; Maki, H.^1 ; Ninomiya, A.^1 ; Isawa, R.^1 ; Tanuma, H.^1

Department of Physics, Tokyo Metropolitan University, Minami-Ohsawa, Tokyo, Hachioji

192-0397, Japan^1

关键词: Arrival time;    Ion Mobility;    Ion-mobility measurements;    Low temperatures;    Meta-stable state;    Mobility measurements;    Molecular ions;    State selective;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/3/032070/pdf
DOI  :  10.1088/1742-6596/635/3/032070

来源: IOP

【 摘 要 】

We have measured ion mobility in cooled helium gas for NH+, NH+2, and NH+3at 77 and 4.3 K. In the measurement of NH+and NH+3, we have observed double peaks in the arrival time spectra, which correspond to different electronic states of molecular ions. These results can be regarded as the first observation of the metastable states in mobility measurement for these ions.