Pressure effects of argon and helium on the first diffuse series doublet of singly ionized barium
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...
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| Published in | Journal of quantitative spectroscopy & radiative transfer Vol. 14; no. 6; pp. 405 - 412 |
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| Main Authors | , , |
| Format | Journal Article |
| Language | English |
| Published |
Elsevier Ltd
01.01.1974
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| Online Access | Get full text |
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| Summary: | 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 6
p
2
P and 6
d
2
D levels and an upward one for 5
d
2
D and 7
s
2
S levels, with respect to the ground state of Ba II. |
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| ISSN: | 0022-4073 1879-1352 |
| DOI: | 10.1016/0022-4073(74)90044-2 |