Author/Authors :
Chu، نويسنده , , Yannan and Senn، نويسنده , , Gilbert and Matejcik، نويسنده , , Stefan and Scheier، نويسنده , , Paul and Stampfli، نويسنده , , Peter and Stamatovic، نويسنده , , Aleksandar and Illenberger، نويسنده , , Eugen and Mنrk، نويسنده , , Tilmann D.، نويسنده ,
Abstract :
Low-energy (0–1 eV) electron attachment to NO clusters is studied with high-energy resolution (15 meV, FWHM). The dominant signal is NO− which has not been observed in previous Rydberg electron transfer studies to NO clusters. The relative cross-section for NO− formation shows a sharp peak close to 0 eV and a series of further weak peaks with a spacing of about 190 meV. The `0 eVʹ peak is ascribed to `s-wave captureʹ by the entire target cluster. Due to the low adiabatic electron affinity of NO (26 meV), NO− cannot be the result of an evaporative attachment reaction. It is suggested that neutral products like N2, via the strongly bound (ONNO)− intermediate, are involved. The weak structures are tentatively assigned as arising from transitions to vibrational excited states of solvated NO−.
