TY - JOUR
T1 - Kinetic-energy release distributions of fragment anions from collisions of potassium atoms with D-Ribose and tetrahydrofuran
AU - Rebelo, André
AU - Cunha, Tiago
AU - Mendes, Mónica
AU - da Silva, Filipe Ferreira
AU - Garcia, Gustavo
AU - Limão-Vieira, Paulo
N1 - AR, TC and MM acknowledge the Portuguese National Funding Agency FCT-MCTES for grants PD/BD/11449/2016, SFRH/BD/52538/2014 and PD/BD/106038/2015. FFS acknowledges the researcher contract IF-FCT IF/00380/2014 and together with PLV the research grants PTDC/FIS-ATO/1832/2012 and UID/FIS/00068/2013. This work was also supported by Radiation Biology and Biophysics Doctoral Training Programme (RaBBiT, PD/00193/2010); UID/Multi/04378/2013 (UCIBIO). GG acknowledges the partial financial support from the Spanish Ministerio de Economia y Competitividad (Project No. FIS2012-31230).
PY - 2016/6/7
Y1 - 2016/6/7
N2 - Kinetic-energy release distributions have been obtained from the width and shapes of the time-of-flight (TOF) negative ion mass peaks formed in collisions of fast potassium atoms with D-Ribose (DR) and tetrahydrofuran (THF) molecules. Recent dissociative ion-pair formation experiments yielding anion formation have shown that the dominant fragment from D-Ribose is OH [D. Almeida, F. Ferreira da Silva, G. Garcia, P. Limao-Vieira, J. Chem. Phys. 139, 114304 (2013)] whereas in the case of THF is O[ D. Almeida, F. Ferreira da Silva, S. Eden, G. Garcia, P. Limao-Vieira, J. Phys. Chem. A 118, 690 (2014)]. The results for DR and THF show an energy distribution profile reminiscent of statistical degradation via vibrational excitation and partly due to direct transformation of the excess energy in translational energy.
AB - Kinetic-energy release distributions have been obtained from the width and shapes of the time-of-flight (TOF) negative ion mass peaks formed in collisions of fast potassium atoms with D-Ribose (DR) and tetrahydrofuran (THF) molecules. Recent dissociative ion-pair formation experiments yielding anion formation have shown that the dominant fragment from D-Ribose is OH [D. Almeida, F. Ferreira da Silva, G. Garcia, P. Limao-Vieira, J. Chem. Phys. 139, 114304 (2013)] whereas in the case of THF is O[ D. Almeida, F. Ferreira da Silva, S. Eden, G. Garcia, P. Limao-Vieira, J. Phys. Chem. A 118, 690 (2014)]. The results for DR and THF show an energy distribution profile reminiscent of statistical degradation via vibrational excitation and partly due to direct transformation of the excess energy in translational energy.
KW - DISSOCIATIVE ELECTRON-ATTACHMENT
KW - NEGATIVE-ION FORMATION
KW - MOLECULE COLLISIONS
KW - CROSS-SECTIONS
KW - SELECTIVITY
KW - CLEAVAGE
KW - ETHERS
KW - STATES
KW - BONDS
KW - BASES
U2 - 10.1140/epjd/e2016-70159-8
DO - 10.1140/epjd/e2016-70159-8
M3 - Article
SN - 1434-6060
VL - 70
JO - European Physical Journal D
JF - European Physical Journal D
IS - 6
M1 - 130
ER -