Pressure effects of argon and helium on the first diffuse series doublet of singly ionized barium |
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| Authors: | Paul K Henry Shang Yi Ch&#x;en Neil Sidell |
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| Institution: | Department of Physics, University of Oregon, Eugene, Oregon 97403, U.S.A. |
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| Abstract: | The shift and broadening of the first diffuse series doublet of Ba II in emission was observed under various relative densities of Ar (20–107) and He (35–121) at 2500°K. By comparing the present data with those of the shift of the principal series doublet from a previous paper, it is suggested that argon pressure causes a downward displacement for 6p2P and 6d2D levels and an upward one for 5d2D and 7s2S levels, with respect to the ground state of Ba II. |
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