Absorption Cross-Section Measurements on the Vacuum Ultraviolet Spectrum of Cadmium Vapour
New atomic cross-sectional data are reported in graphical and tabular form from the ionization threshold at 1378 $\overset{\circ}{\mathrm A}$ down to 525 $\overset{\circ}{\mathrm A}$. The value of the photoionization cross-section at the threshold is 0$\cdot$32 $\pm$ 0$\cdot$6 Mb falling to 0$\cdot$...
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Veröffentlicht in: | Proceedings of the Royal Society of London. Series A, Mathematical and physical sciences Mathematical and physical sciences, 1969-04, Vol.310 (1500), p.137-149 |
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Sprache: | eng |
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Zusammenfassung: | New atomic cross-sectional data are reported in graphical and tabular form from the ionization threshold at 1378 $\overset{\circ}{\mathrm
A}$ down to 525 $\overset{\circ}{\mathrm A}$. The value of the photoionization cross-section at the threshold is 0$\cdot$32
$\pm$ 0$\cdot$6 Mb falling to 0$\cdot$1 Mb in the region of 1200 $\overset{\circ}{\mathrm A}$ and thereafter is dominated
by autoionizing transitions. Configuration interaction between the levels of the (4d)$^9$(5s)$^2$5p multiplet is observed
which causes the $^3$D$_1$ level to interact strongly with the wings of the $^3$P$_1$ level. The oscillator strengths for
the (5s)$^{2 1}$S$_0$-(4d)$^9$(5s)$^2$np$^1$P$_1$, $^3$P$_1$ and $^3$D$_1$ transitions converging on the $^2$D$_{\frac{5}{2},\frac{3}{2}}$
ionic states are reported and an oscillator strength sum approaching unity is observed. Individual line oscillator strengths
are compared with Hartree-Fock calculations of Wilson (1968). |
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ISSN: | 1364-5021 0080-4630 1471-2946 2053-9169 |
DOI: | 10.1098/rspa.1969.0068 |