Collisional broadening of Ba I line (553.5 nm) by He or Ar |
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| Authors: | E. Kuchta R. J. Alvarez II Y. H. Li D. A. Krueger C. Y. She |
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| Affiliation: | (1) Department of Physics, Colorado State University, 80523 Fort Collins, CO, USA |
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| Abstract: | ![]()
The Doppler-free line shape of the 6s21S0 – 6s16p11P1 transition at 553.5 nm in natural Ba in the presence of an argon or helium buffer gas has been measured at 744 K for gas pressures from 0.2 to 100 Torr. Using the measured data for pressures above 5 Torr, the broadening rate coefficients for the half width at half maximum (HWHM) are determined to be (4.9±0.5) 10–9 and (5.0±0.5)10–9 s–1 cm–3 for helium and argon respectively. |
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| Keywords: | 32.70.Jz 34.40.+n |
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