The Near-Infrared Transition of CuCl Observed by Intracavity Laser Spectroscopy

Intracavity Laser Spectroscopy of NiCl System G: Identification of a [13.0] 2Π3/2 State

“…This hightemperature spectrum was used in the vibronic analysis of NiCl system G. The second method of recording the NiCl system G spectrum entailed measurement of the molecular absorption spectrum at Doppler-limited resolution using the intracavity laser spectroscopy technique: an Ar plasma discharge is formed in a 2-inch-long nickel hollow cathode that is located in the resonator cavity of a Ti:sapphire laser, the NiCl species are created from sputtered nickel, and a tiny amount of CCl 4 mixed with the Ar flow through the cathode and the laser beam passes through the hollow cathode orifice. The spectrometer and method of data analysis are fully described in O'Brien et al (15,16) and Kalmar and O'Brien (17) and a description of the apparatus used to generate the gaseous NiCl is provided in O'Brien et al (4). The water-cooled hollow cathode used to produce NiCl is powered by an ENI DCG-100 DC plasma generator which is operated (250 to 500 V, up to 1.4 A) only for a short period of time initiated just before spectral data accumulation is started.…”

Fourier Transform Emission Spectroscopy of CuCl

“…Since then, rotational analyses of the electronic emission bands have been performed (3)(4)(5)(6)(7), as well as work in the millimeter and microwave regions of the spectrum (8,9). Work performed by Rao et al (4,5), as well as contributions by Lagerqvist and Lazarava-Girsamoff (10) and Ahmed and Barrow (11), led to the characterization of the six excited electronic states, originally labeled as is between two highly excited electronic states (14). Ab initio calculations were performed with new assignments for the electronic systems that included triplet states (15,16).…”

Identification of the High-Lying Π Component of NiF by Laser-Induced Fluorescence

“…And, the following expression for the ground state X 2 3/2 is [3] where the ± refers to the e and f rotational levels, respectively. In simulation, the lineshape was convoluted with a Lorentzian function and the intensities of the rotational lines in each band were given by the combination of the Hönl-London factor (19) and a Boltzmann distribution (T rot = 95 K).…”

“…In simulation, the lineshape was convoluted with a Lorentzian function and the intensities of the rotational lines in each band were given by the combination of the Hönl-London factor (19) and a Boltzmann distribution (T rot = 95 K). Expressions [1] and [3] and the Hönl-London factor for the = 0 transition were used for the 3/2 -X 2 3/2 transition. A simulated spectrum of the 20 282 cm −1 transition is shown in Fig.…”

“…The spectroscopy of diatomic transition metal halides is continuously an active area of research despite considerable past experimental work (1)(2)(3). Due to the strong electronegativity of the fluorine atom, the NiF molecule provides a simple model for ionic bonding.…”