RESUMO
The near-infrared electronic transition of CuCl, occurring in the region of 745 nm, was recorded using intracavity laser absorption spectroscopy. The (0, 0), (1, 1), and (2, 2) vibronic bands were analyzed, and from this the molecular constants for the two electronic states were derived. Originally assigned as A' (3)Sigma(+)-X(1)Sigma(+), we have confirmed that this transition does not connect to the ground state, but occurs between two unknown excited states. The excited CuCl molecules were produced in a copper hollow cathode, operated using argon and a small amount of CCl(4). Line positions were referenced to iodine spectra observed from a heated extracavity cell using the broadband spectral output of the intracavity laser as the light source. Copyright 2000 Academic Press.
RESUMO
The near-infrared electronic transition of CuS has been observed for the first time. The spectrum of the Y2Sigma+-X2Pi transition, labeled by analogy with the CuO near infrared electronic transition, was recorded with the Fourier transform spectrometer associated with the McMath-Pierce Solar Telescope, Kitt Peak, Arizona. The excited CuS molecules were produced in a King-type carbon tube furnace operating at 1900 degrees C and at a total pressure of approximately 400 Torr. The electronic transition energy and vibrational constants for the Y2Sigma+ state of 63Cu32S are presented. Copyright 1999 Academic Press.
RESUMO
The visible electronic transitions of AuCl were observed at high resolution for the first time. The spectrum was recorded with the Fourier transform spectrometer associated with the McMath-Pierce solar telescope at Kitt Peak. The excited AuCl molecules were produced in a microwave discharge, with 4 Torr of helium seeded with 3% chlorine flowing over AuCl3 powder. Constants for the X1Sigma+, AOmega = 1, and BOmega = 0(+) states of Au35Cl are presented. The AOmega = 1 and the BOmega = 0(+) states may be two spin-orbit components of a 3Pi electronic state, and molecular parameters for this excited 3Pi state also are given. Copyright 1999 Academic Press.
RESUMO
The Y2Sigma+-X2Pii near-infrared electronic transition of CuO was observed at high resolution for the first time. The spectrum was recorded with the Fourier transform spectrometer associated with the McMath-Pierce Solar Telescope at Kitt Peak. The excited CuO molecules were produced in a low pressure copper hollow cathode sputter with a slow flow of oxygen. Constants for the Y2Sigma+ states of CuO are: T0 = 7715.47765(54) cm-1, B = 0.4735780(28) cm-1, D = 0.822(12) x 10(-6) cm-1, H = 0.46(10) x 10(-10) cm-1, gamma = -0.089587(42) cm-1, gammaD = 0.1272(79) x 10(-6) cm-1, bF = 0.12347(22) cm-1, and c = 0.0550(74) cm-1. Improved X2Pii constants are also presented.
