Soft ionization mechanisms in flexible µ-tube plasma—elucidation of He-, Ar-, Kr-, and Xe-FµTP. - Tian, Caiyan; Song, Hao; Ahlmann, Norman; Brandt, Sebastian; Foest, Daniel; Niu, Guanghui; Franzke, Joachim; Speicher, Luisa (Analytical & Bioanalytical Chemistry, 2024)