Polarization Spectroscopy of Na$_{2}$ $A-X$ Transitions

POSTER

Abstract

We have measured or remeasured thousands of lines in the Na$_{2}$ $A \leftarrow X$ system, using a heat-pipe oven, with sub-Doppler resolution. The line widths are typically 250 MHz with $>$10 signal:noise ratio, yeilding line centers to an accuracy of 90 MHz including calibration uncertainties. In certain cases, the rotational quantum number assignments are determined by measuring dispersed fluorescence. These data points are being added to thousands of other measured term values from about 20 sources for the NA$_{2}$ $A ^{1}\Sigma_{u}^{+}$ and $b ^{3}\Pi_{u}$ states in a comprehensive compilation and analysis [1]. The present status of this analysis is adequate to assign most of the lines observed in the present study, with iterative refinement. Accurate potential curves and spin-orbit coupling functions are obtained, and can be used, for example, to identify mixed singlet-triplet ``window'' states through which to excite higher triplet levels. \\ 1. T. Bergeman, A. M. Lyyra, Li Li, A. Ross and others: work in progress.

Authors

  • Peng Qi

  • Jianmei Bai

  • Student Workshop

    Physics, Stony Brook University, NY 11794-3800 USA, Physics Department, Western Michigan University, Kalamazoo, MI, 49008, USA, Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA, University of Pittsburgh, Pittsburgh, PA 15260, USA, R. Bo\v{s}kovi\'{c} Institute, Zagreb, Croatia, Bose Institute, Kolkata, India, U. Wisconsin, Argonne National Laboratory, U. Kentucky, Kansas State University, Rice University, Oak Ridge National Laboratory, University of Tennessee, Vienna University of Technology, University of Tennessee, Vienna University of Technology, University of North Alabama, Florence, AL, University of Connecticut, LANL, Auburn University, Voronezh State University, Russia, Oak Ridge National Laboratory, Rollins College, ATOMKI, Debrecen, GANIL, Caen, Stony Brook University, NY 11794-3800 USA, Hefei National Lab \& Dept of Chemical physics, Univ of Sci \& Tech of China, Dept of Earth \& Environ Sci, Univ of Illinois at Chicago, EFI \& Dept of Geophys. Sci., UofC, Chem Div, ANL, Phys Div, ANL, Phys Div, Argonne National Lab (ANL) \& Enrico Fermi Institute (EFI), Univ of Chicago (UofC), Department of Physics, University of Turku, 20014 Turku, Finland, Clarendon Laboratory, Oxford, SNL, Univ. Paris Sud, Orsay

  • A. M. Lyyra

    Physics Department, Temple University, Philadelphia, PA 19112, Temple University

  • T. H. Bergeman

    SUNY Stony Brook