Improved characteristics of the 22.5 keV (M1 + E2) nuclear transition in 149 Sm

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ID: 111369
2011
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Abstract
The gamma ray and conversion electron spectra of the 22.5keV M1 + E2 nuclear transition depopulating the first excited level 5/2− in 149Sm 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 E2 admixture parameter |δ(E2/M1)| = 0.0784 ± 0.0009 and the nuclear structure parameter λ = − 2 ± 10 were derived. The |δ(E2/M1)| and λ parameters were also obtained for all available experimental data and their mutual combination.
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Authors A. Kh. Inoyatov;D. V. Filosofov;V. M. Gorozhankin;A. Kovalık;I. Adam;L. L. Perevoshchikov;M. Ryšavý;A. Kh. Inoyatov;D. V. Filosofov;V. M. Gorozhankin;A. Kovalık;I. Adam;L. L. Perevoshchikov;M. Ryšavý;
Journal the european physical journal a
Year 2011
DOI doi:10.1140/epja/i2011-11064-9
URL
https://doi.org/10.1140/epja/i2011-11064-9
Keywords
nuclear fusion nuclear physics heavy ions hadrons particle and nuclear physics

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