Energy separation of the doublet of intrinsic states at the ground state ofTh<mml:mprescripts/>229

1990/01/15 by C.W. Reich, R.G. Helmer · 13 citations
Physics and Astronomy · #Nuclear physics research studies #Nuclear Physics and Applications #Radioactive Decay and Measurement Techniques

paper · doi:10.1103/physrevlett.64.271

openalex publication_date 1990/01/15 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30

Abstract

It has been known from some time that the intrinsic state labeled by the asymptotic quantum numbers (3/2⁺[631] lies quite close (&lt;0.1 keV) to the (5/2⁺[633] ground state of ²²⁹Th. Using the energies of selected \ensuremathγ rays emitted following the \ensuremathα decay of ²³³U, we have obtained a value of 1\ifmmode±\else\textpm\fi4 eV for the energy separation of these two intrinsic states.

Citations

• Features of the low-energy level scheme of 229Th as observed in the α-decay of 233U

Cited by

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• Lifetime measurement of the ²²⁹Th nuclear isomer
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• Energy Splitting of the Ground-State Doublet in the NucleusTh<mml:mprescripts/><mml:none/>229
• The 229-thorium isomer: doorway to the road from the atomic clock to the nuclear clock
• Processes of the nuclear isomer 229mTh(3/2+, 3.5 ± 1.0 eV) resonant excitation by optical photons
• Impact of the electron environment on the lifetime of the229Thmlow-lying isomer
• An excited state ofTh<mml:mprescripts/>229at 3.5 eV
• On an attempt to optically excite the nuclear isomer in Th-229
• Towards a 229Th-based nuclear clock
• Effect of atomic electrons on the7.6-eV nuclear transition inTh<mml:mprescripts/><mml:none/>2293+
• Isotopes of thorium [wikipedia]