RESUMEN
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.
RESUMEN
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.
RESUMEN
High-resolution Fourier transform spectra of LiH and LiD were recorded in the far-infrared region, 100-360 cm-1, and the mid-infrared regions, 800-1200 cm-1 and 2000-3000 cm-1. A total of 261 pure rotational lines and 678 rovibrational lines were measured for the isotopomers 6LiH(D) and 7LiH(D). Molecular constants for the X1Sigma+ ground state in the form of mass-dependent Dunham Yij's and mass-independent Dunham Uij's were determined from a data set of 1476 lines, consisting of our measured line positions and previously reported microwave, millimeter-wave, and infrared lines. An effective internuclear potential for the ground electronic state where the Born-Oppenheimer part is modeled as a parameterized modified-Morse function was also determined from a fit of the data. Copyright 1998 Academic Press.
RESUMEN
The infrared emission spectra of NaCl and KCl have been recorded at high resolution with a Fourier transform spectrometer. A total of 929 lines belonging to 8 vibrational bands, 1-0 to 8-7, for Na35 Cl, 252 lines of 1-0, 2-1, and 3-2 bands of Na37 Cl, and 355 lines of 1-0, 2-1, 3-2, and 4-3 bands of K35 Cl have been measured and combined with the existing microwave and millimeter-wave data to obtain a set of refined molecular constants. The data for Na35 Cl and Na37 Cl have also been fitted to determine the Dunham Yij constants and mass-reduced Dunham constants Uij . In one fit all Uij 's were treated as adjustable parameters while in a second fit only Ui 0 's and Ui 1 's were allowed to vary freely with the remaining Uij constants determined by the constraints imposed by the Dunham model. In addition, the internuclear potential energy parameters were determined by fitting the entire NaCl data set to the eigenvalues of the Schrodinger equation containing a parameterized potential energy function.
RESUMEN
We report an upconversion laser that is pumped by two colors-one red and one near infrared-and emits in the blue-green region.
