High resolution study of near-infrared emission spectra of 142NdO

Spectroscopy of 142NdO: New results

“…The relative intensities in the three branches are I Q > I P > I R . The rotational analysis in [2] has been confirmed, showing that the lower level of the transition is (1)5 m = 0, a level accurately characterized in a previous study [5]. P, Q, R lines do not show X doubling in the range of the observations.…”

“…The technique was essentially the same as that described in an earlier paper [5] where more details can be found. The emission spectrum of NdO was obtained in a vacuum furnace.…”

“…Values in this range have also been found for the low-lying states of lanthanide oxides [2]; L m = À0.1045(71)10 À11 . g Constants for this level are from Shenyavskaya et al [5]; L m and splitting parameters are given in [5]. h L m = À0.1624(95)10 À14 .…”

“…These works clearly established the X = 4 symmetry of the ground state. More recently, Shenyavskaya et al [5] carried out an extensive study of the thermal emission spectrum of isotopically pure 142 NdO, observing well-resolved rotational structures in the infrared 790-1330 nm region using a Fourier transform spectrometer. They extended the analysis of several bands observed by Kaledin et al [2] and assigned many new bands.…”

Laser induced fluorescence spectroscopy of 142NdO

“…Kaledin et al [1] obtained many emission and absorption bands in the region 500-1100 nm and rotationally analyzed eight different electronic transitions. More recently, Shenyavskaya et al [2] conducted an extensive study of the thermal emission spectrum of isotopically pure 142 NdO, obtaining clearly resolved rotational structure using a Fourier transform spectrometer in the near infrared region, 790-1330 nm. They observed and extended the analysis of several of the bands observed by Kaledin et al [1] and were also able to assign many new bands.…”