Fragmentation of multiply ionized biomolecules induced by MeV heavy ions. (July 2015)

• Record Type: Journal Article
• Authors: Yoshida, S O; Majima, T; Asai, T; Matsubara, M; Tsuchida, H; Itoh, A
• Is Part Of: Journal of physics. Number 635(2015)
• Publication Date: 2015-07
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/635/3/032062
• Languages: English
• ISSNs: 1742-6588

Abstract

Synopsis: Collision-induced ionization and fragmentation of gas-phase adenine molecules (C5 N5 H5 ) have been investigated for single electron capture collisions of 1.2 MeV C 2+ ions. Coincidence measurements between the number of ejected electrons and the time-of-flight of fragment ions allows us to determine charge states of intermediate parent ions r . Highly charged parent ions are observed up to r ∼ 6 and the production of lighter fragment ions becomes predominant with increasing r . We found that kinetic energies of H + are significantly larger than those of other fragment ions and become nearly equivalent irrespective of r for r > 1.