Ionization energies of the non-stoichiometric LinFn−1 (n=3, 4, 6) clusters

Study of small chlorine‐doped potassium clusters by thermal ionization mass spectrometry

“…The present investigation of the chlorine‐doped potassium clusters is an extension of our previous studies of small halogen‐doped alkali clusters, and a continuation of our systematic study of IEs of these clusters by the thermal ionization source of modified design MS . The clusters of the type K n Cl + and K n Cl n − 1 ( n > 3) were detected for the first time simultaneously in a cluster beam generated by a potassium fluoride.…”

“…They established that the intensity of K 2 Cl + ions emitted by KCl is greatly enhanced by loading graphite on the filament at a low temperature (below 573 K). Also, potassium halide salt was found to yield K 2 Cl cluster ion in electrospray ionization MS. [38,39] The IE of 3.60 eV for K 2 Cl was first calculated by Ochsenfeld and Ahlrichs, [40] while an experimental value of 3.50 AE 0.1 eV was measured by a photoionization MS. [16,41] The present investigation of the chlorine-doped potassium clusters is an extension of our previous studies of small halogen-doped alkali clusters, and a continuation of our systematic study of IEs of these clusters by the thermal ionization source of modified design MS. [42][43][44][45][46][47][48] The clusters of the type K n Cl + and K n Cl nÀ1 (n > 3) were detected for the first time simultaneously in a cluster beam generated by a potassium fluoride. The focus of this work was to examine the influence of chlorine, as impurity doping, on the IEs of small potassium clusters and compare these results with similar corresponding clusters containing lithium atom.…”

Production and ionization energies of KnF (n = 2–6) clusters by thermal ionization mass spectrometry

“…The present work is an extension of our previous studies on very small metal‐rich clusters doped by a halogen . In this work, the applicability of the modified thermal ionization source for obtaining K n F (n ≥2) clusters has been investigated.…”

“…The present work is an extension of our previous studies on very small metal-rich clusters doped by a halogen. [45][46][47][48][49][50] In this work, the applicability of the modified thermal ionization source for obtaining K n F (n ≥2) clusters has been investigated. In addition, the conditions for measuring the ionization energies of fluorine-doped potassium clusters has been studied, in order to reveal the effect of fluorine on the IE of small K n clusters.…”

Study of vaporization of LiI, LiI/C70, LiI/LiF/C70 from the Knudsen cell located into ionization chamber of the mass spectrometer

“…[36][37][38][39][40][41][42][43] In the earlier papers, it was shown that the experimental setup in which the Knudsen cell was located in the ionization chamber provides better conditions than the standard experimental setup of the KCMS for obtaining both the neutral and positively charged "superalkali" clusters of the type Li n X, X = F or I (n = 2, 3, 4, 5 or 6). [36][37][38][39][40][41][42][43] In the earlier papers, it was shown that the experimental setup in which the Knudsen cell was located in the ionization chamber provides better conditions than the standard experimental setup of the KCMS for obtaining both the neutral and positively charged "superalkali" clusters of the type Li n X, X = F or I (n = 2, 3, 4, 5 or 6).…”