Conveners
M4-2 Atomic and Molecular Spectroscopy: Microwave to X-ray (DAMOPC) | Spectroscopie atomique et moléculaire: des micro-ondes aux rayons X (DPAMPC)
- Gautam Dias (Lakehead University)
In this study we present our latest measurement and theoretical results for self- and air-broadened transitions in the methane octad range. For this project we have used a set of 14 spectra of pure methane and lean mixtures of methane and air, recorded at the Jet Propulsion Laboratory. The spectra were analysed using a multispectrum fit program. We have measured the line positions,...
The beta-decay of the halo nucleus helium-6 is investigated, with analysis of the relative abundances of the daughter states and the angular correlations between the products of the beta-decay. The corrected, higher precision, ion recoil spectrum is calculated, taking into account the momentum of ejected electrons. This spectrum contains the antineutrino signature, which is one of the products...
We present the results of a spectroscopic study of 27 spectra of the fundamental band of pure carbon monoxide and carbon monoxide mixed with air, recorded over a range of temperatures. The Voigt, speed-dependent Voigt and Rautian line shape models have been employed in the analysis. Line intensities, air- and self-broadening coefficients, pressure induced air- and self-shift coefficients,...
The tune-out wavelength is the wavelength at which the frequency dependent polarizability of an atom vanishes. It can be measured to very high precision by means of an interferometric comparison between two beams. This paper is part of a joint theoretical/ experimental project with K. Baldwin et al.\ (Australian National University) [1] and L.-Y. Tang et al.\ (Wuhan Institute of Physics and...
One of the rarest elements in the universe is astatine. All isotopes of astatine are radioactive and decay into other elements. The most stable astatine isotope $^{210}$At has a half-life of only 8.2 h. For this reason its elemental properties are difficult to study. Laser resonance ionization spectroscopy of astatine allows finding atomic energy levels and consequently, via the hyperfine...
