Systematic Study of Atomic Lifetimes in Gallium, Indium, and Thallium Measured by the Beam-Foil Technique
Systematic Study of Atomic Lifetimes in Gallium, Indium, and Thallium Measured by the Beam-Foil Technique
复制标题
用束箔技术测量镓、铟和铊原子寿命的系统研究
DOI：
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发表时间：
1972
期刊：
影响因子：
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通讯作者：
G. Sorensen
中科院分区：
文献类型：
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作者：
T. Andersen;G. Sorensen
Systematic studies of atomic lifetimes and oscillator strengths in the homologous atoms Ga, In, Tl and ${mathrm{Ga}}^{+}$, ${mathrm{In}}^{+}$, ${mathrm{Tl}}^{+}$ have been performed by measuring mean lives of excited atomic states using the beam-foil technique. The lifetimes of the lowest $S$ levels in the neutral atoms, 6.9 ifmmodepmelse extpmfi{}0.5, 7.5ifmmodepmelse extpmfi{}0.7, and 7.7ifmmodepmelse extpmfi{}0.5 nsec, respectively, for Ga, In, and Tl, are in agreement with recent reported values obtained by Hanle-effect and phase-shift techniques. Identical $f$ values are found for homologous transitions in Al, Ga, In, and Tl, when configuration mixing can be excluded. The experimental results are compared with theoretical data based upon a single-configuration Coulomb approximation for neutral atoms and with a modified self-consistent-field approach for singly ionized atoms.
Systematic studies of atomic lifetimes and oscillator strengths in the homologous atoms Ga, In, Tl and ${mathrm{Ga}}^{+}$, ${mathrm{In}}^{+}$, ${mathrm{Tl}}^{+}$ have been performed by measuring mean lives of excited atomic states using the beam-foil technique. The lifetimes of the lowest $S$ levels in the neutral atoms, 6.9 ifmmodepmelse extpmfi{}0.5, 7.5ifmmodepmelse extpmfi{}0.7, and 7.7ifmmodepmelse extpmfi{}0.5 nsec, respectively, for Ga, In, and Tl, are in agreement with recent reported values obtained by Hanle-effect and phase-shift techniques. Identical $f$ values are found for homologous transitions in Al, Ga, In, and Tl, when configuration mixing can be excluded. The experimental results are compared with theoretical data based upon a single-configuration Coulomb approximation for neutral atoms and with a modified self-consistent-field approach for singly ionized atoms.