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首页> 外文期刊>The European Physical Journal, A. Hadrons and Nuclei >Improved characteristics of the 22.5 keV (M1 + E2) nuclear transition in ~(149)Sm
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Improved characteristics of the 22.5 keV (M1 + E2) nuclear transition in ~(149)Sm

机译:〜(149)Sm中22.5 keV(M1 + E2)核跃迁的改进特性

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摘要

The gamma ray and conversion electron spectra of the 22.5keV M_1 + E_2 nuclear transition depopulating the first excited level 5/2? in ~(149)Sm were investigated in detail. A substantially improved value of 22500.2 ± 0.8 eV for the transition energy was determined that opens a possibility to establish an electron energy standard for the keV region based on the conversion electron lines of this transition. The E_2 admixture parameter |δ(E_2/M_1)| = 0.0784 ± 0.0009 and the nuclear structure parameter λ = ? 2 ± 10 were derived. The |δ(E_2/M_1)| and λ parameters were also obtained for all available experimental data and their mutual combination.
机译:22.5keV M_1 + E_2核跃迁的γ射线和转换电子光谱使第一激发能级5/2?消失。在〜(149)Sm中进行了详细研究。确定了跃迁能量的显着改善的值22500.2±0.8 eV,这为基于跃迁的转换电子线为keV区建立电子能量标准提供了可能性。 E_2外加剂参数|δ(E_2 / M_1)| = 0.0784±0.0009,核结构参数λ=δ。得出2±10。 |δ(E_2 / M_1)|还为所有可用的实验数据及其相互组合获得了λ和λ参数。

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