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- W1978395960 startingPage "426" @default.
- W1978395960 abstract "Pankhurst has described a band spectrum believed by him to belong to an oxide of silicon, possibly Si${mathrm{O}}_{2}$. A better excitation of the same bands has been obtained from a similar source (a high voltage uncondensed discharge through a constriction in a quartz tube), but in helium gas instead of hydrogen. These bands have been photographed on the 30-foot, 30,000 lines per inch Chicago grating spectrograph. A band near $ensuremath{lambda}3840$ has been resolved in the first and second orders and found to be a (0,0) transition, overlapped by a weak (1,1) transition, of the type $^{2}ensuremath{Sigma}ensuremath{rightarrow}^{2}ensuremath{Sigma}$, having the constants ${ensuremath{nu}(0,0)=26,015.05 {mathrm{cm}}^{ensuremath{-}1},,ensuremath{nu}(1,1)=25,991.44{mathrm{cm}}^{ensuremath{-}1},}{{{B}_{0}}^{ensuremath{'}}=0.7180{mathrm{cm}}^{ensuremath{-}1},,{{B}_{1}}^{ensuremath{'}}=0.704{mathrm{cm}}^{ensuremath{-}1},}{{{B}_{0}}^{ensuremath{'}ensuremath{'}}=0.7253{mathrm{cm}}^{ensuremath{-}1},,{{B}_{1}}^{ensuremath{'}ensuremath{'}}=0.712{mathrm{cm}}^{ensuremath{-}1}.}$ The coefficients of the spin doubling for the two states are ${{ensuremath{gamma}}_{0}}^{ensuremath{'}}=+0.012 {mathrm{cm}}^{ensuremath{-}1}$, ${{ensuremath{gamma}}_{0}}^{ensuremath{'}ensuremath{'}}=+0.002$ or ${{ensuremath{gamma}}_{0}}^{ensuremath{'}ensuremath{'}}=+0.022 {mathrm{cm}}^{ensuremath{-}1}$, the value of ${{ensuremath{gamma}}_{0}}^{ensuremath{'}ensuremath{'}}$ not certainly fixed as between these two alternatives. The doublet structure and the $B$ values prove that the emitter is Si${mathrm{O}}^{+}$. Other bands at $ensuremath{lambda}4270$ have been resolved with weak intensity and tentatively ascribed to Si${mathrm{O}}_{2}$." @default.
- W1978395960 created "2016-06-24" @default.
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- W1978395960 date "1943-06-01" @default.
- W1978395960 modified "2023-10-16" @default.
- W1978395960 title "On the Silicon Oxide Bands" @default.
- W1978395960 cites W2005961025 @default.
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- W1978395960 doi "https://doi.org/10.1103/physrev.63.426" @default.
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