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Nuclear Optical Frequency Standards: the New Generation

F. F. Karpeshin, M. B. Trzhaskovskaya

Transactions of IAA RAS, issue 36, 15–20 (2016)

Keywords: atomic clock, precision frequency standard, isomeric line, nuclear isomerism, resonance conversion, NEET, TEEN

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Abstract

The isomeric nuclide of Th is investigated theoretically as an option for the new nuclear optical frequency standard. Physics of the two-photon optical pumping this isomer through the atomic shell is considered. We discuss the details of the optimal experimental design. It is shown that the required cumulative energy of both photons is the nuclear energy plus the energy of the 8s 7s state of the atom. The calculated lifetime of the isomer in single-ionized atoms is 165 s

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F. F. Karpeshin, M. B. Trzhaskovskaya. Nuclear Optical Frequency Standards: the New Generation // Transactions of IAA RAS. — 2016. — Issue 36. — P. 15–20. @article{karpeshin2016, abstract = {The isomeric nuclide of Th is investigated theoretically as an option for the new nuclear optical frequency standard. Physics of the two-photon optical pumping this isomer through the atomic shell is considered. We discuss the details of the optimal experimental design. It is shown that the required cumulative energy of both photons is the nuclear energy plus the energy of the 8s 7s state of the atom. The calculated lifetime of the isomer in single-ionized atoms is 165 s}, author = {F.~F. Karpeshin and M.~B. Trzhaskovskaya}, issue = {36}, journal = {Transactions of IAA RAS}, keyword = {atomic clock, precision frequency standard, isomeric line, nuclear isomerism, resonance conversion, NEET, TEEN}, pages = {15--20}, title = {Nuclear Optical Frequency Standards: the New Generation}, url = {http://iaaras.ru/en/library/paper/1074/}, year = {2016} } TY - JOUR TI - Nuclear Optical Frequency Standards: the New Generation AU - Karpeshin, F. F. AU - Trzhaskovskaya, M. B. PY - 2016 T2 - Transactions of IAA RAS IS - 36 SP - 15 AB - The isomeric nuclide of Th is investigated theoretically as an option for the new nuclear optical frequency standard. Physics of the two- photon optical pumping this isomer through the atomic shell is considered. We discuss the details of the optimal experimental design. It is shown that the required cumulative energy of both photons is the nuclear energy plus the energy of the 8s 7s state of the atom. The calculated lifetime of the isomer in single-ionized atoms is 165 s UR - http://iaaras.ru/en/library/paper/1074/ ER -