Matrix studies of the products of laser vaporization of graphite

Potential Energy Curves, Spectroscopic Parameters, and Spin–Orbit Coupling: A Theoretical Study on 24 Λ-S and 54 Ω States of C2+ Cation

“…Recently, in 2004, Tarsitano et al obtained high-resolution spectroscopy of the 2 2 Π u ← X 4 Σ g – forbidden transitions of the C 2 + using the velocity modulation technique in conjunction with heterodyne detection. Some spectroscopic and molecular properties have been extracted from these experiments. − Summarizing these measurements, we find that (1) few spectroscopic parameters of Ω states have been reported for the Λ-S states involved in this article except for the 2 2 Π u , though the spin–orbit (SO) coupling effect has been studied by two groups of experiments; , and (2) the spectroscopic parameters, in particular for the T e , R e , and ω e , are accurately determined only for the X 4 Σ g – and B 4 Σ u – Λ-S states in experiment, though a number of spectroscopic measurements − have been done in the past several decades.…”

New Developments in Matrix Isolation Spectroscopy

“…The isoelectronic C 2 + ion in neon matrix was detected in 1987, and its B 4 Σ u - ↔ X 4 Σ g - transition was observed. Maier et al used in situ photolysis of chloroacetylene to generate the ion, while in our laboratory laser vaporization of graphite was employed, and it was characterized by its absorption and laser-induced fluorescence spectrum. The analogous transition of BC was observed in the gas phase a few years later …”

“…A further method which is steadily gaining in popularity for studies of ions is laser vaporization, which we discussed in the section dedicated to this method. In fact we have reported the first study of ions using this technique almost a decade ago, in 1987 when we generated the C 2 - , and C 2 + ions (as well as neutral C 2 ) in a neon matrix by laser vaporization of graphite . Today, it probably represents the most versatile method of ion production.…”

“…In fact we have reported the first study of ions using this technique almost a decade ago, in 1987 when we generated the C 2 -, and C 2 + ions (as well as neutral C 2 ) in a neon matrix by laser vaporization of graphite. 75 Today, it probably represents the most versatile method of ion production. (See Table 1.)…”

Laser ablation at solid–liquid interfaces: An approach from optical emission spectra

“…Laser ablation of these materials in vacuum or in diluted gases has been extensively studied. 4,5,11,[14][15][16][17][18][19][20][21][22][23] Since various carbon species have been observed by using graphite as a target, the investigation of the laser ablation of graphite in liquid would give important information for organic chemistry of reactive carbons. Since boron nitride is a compound with the electronic structure similar to graphite, we chose this material for another target material.…”