Negative ion chemistry of Deoxyribose and THF upon potassium atom collisions

28th International Conference on Photonic, Electronic and Atomic Collisions

Almeida, D.^1 ; Silva, F. Ferreira Da^1 ; García, G.^2,3 ; Limao-Vieira, P.^1

Laboratório de Colisões Atómicas e Moleculares, CEFITEC, Universidade Nova de Lisboa, Caparica

2829-516, Portugal^1

Instituto de Física Fundamental, Consejo Superior de Investigaciones Científicas, Serrano 113-bis, Madrid

28006, Spain^2

Centre for Medical Radiation Physics, University of Wollongong, NSW

2522, Australia^3

关键词: Collision energies;    Crossed molecular beams;    Fragmentation patterns;    Ion formation;    Post collision interaction;    Potassium atoms;    Tetrahydrofurans;    Time-of-flight mass spectrometers;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/488/1/012043/pdf
DOI  :  10.1088/1742-6596/488/1/012043

来源: IOP

【 摘 要 】

Negative ion formation in collisions of potassium atoms with tetrahydrofuran (THF) and D-Ribose (DR) were performed in a crossed molecular beam setup equipped with a time- of-flight (TOF) mass spectrometer. Owing to the role of these molecules as possible representations of the sugar unit in the DNA/RNA, the fragmentation patterns obtained for different collision energies were compared and the role of K+ post-collision interaction with the molecular is evaluated.