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• W1726345452 abstract "Based on the spectroscopic constants derived from highly accurate potential energy surfaces, the SeD radical is identified as a spectroscopic probe for measuring spatial and temporal variation of fundamental physical constants such as the fine-structure constant (denoted as $alpha=frac{e^2}{hbar c}$) and the proton-to-electron mass ratio (denoted as $mu=frac{m_p}{m_e}$). The ground state of SeD ($X^2Pi$), due to spin-orbit coupling, splits into two fine structure multiplets $^2Pi_{frac{3}{2}}$ and $^2Pi_{frac{1}{2}}$. The potential energy surfaces of these spin-orbit components are derived from a state of the art electronic structure method, MRCI+Q inclusive of scalar relativistic effects with the spin-orbit effects accounted through the Breit-Pauli operator. The relevant spectroscopic data are evaluated using Murrel-Sorbie fit to the potential energy surfaces. The spin-orbit splitting($omega_f$) between the two multiplets is similar in magnitude with the harmonic frequency ($omega_e$) of the diatomic molecule. The amplification factor derived from this theoretical method for this particular molecule can be as large as 350, on the lower side it can be about 34. The significantly large values of K indicate that SeD radical can be a plaussible experimental candidate for measuring variation in $alpha$ and $mu$." @default.
• W1726345452 created "2016-06-24" @default.
• W1726345452 creator A5062973771 @default.
• W1726345452 creator A5064704314 @default.
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• W1726345452 date "2014-07-10" @default.
• W1726345452 modified "2023-09-24" @default.
• W1726345452 title "SeD radical as a probe for the measurement of the time variation of the fine-structure constantαand proton-to-electron mass ratioμ" @default.
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• W1726345452 doi "https://doi.org/10.1103/physreva.90.012509" @default.
• W1726345452 hasPublicationYear "2014" @default.
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