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| Main Authors: | , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2404.02025 |
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| _version_ | 1866917701262245888 |
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| author | Ge, Zhuang Bai, Shiwei Eronen, Tommi Jokinen, Ari Kankainen, Anu Kujanpää, Sonja Moore, Iain Nesterenko, Dmitrii Reponen, Mikael |
| author_facet | Ge, Zhuang Bai, Shiwei Eronen, Tommi Jokinen, Ari Kankainen, Anu Kujanpää, Sonja Moore, Iain Nesterenko, Dmitrii Reponen, Mikael |
| contents | The absolute mass of $^{84}$Sr was determined using the phase-imaging ion-cyclotron-resonance technique with the JYFLTRAP double Penning trap mass spectrometer. A more precise value for the mass of $^{84}$Sr is essential for providing potential indications of physics beyond the Standard Model through high-precision isotope shift measurements of Sr atomic transition frequencies. The mass excess of $^{84}$Sr was refined to be -80649.229(37) keV/c$^2$ from high-precision cyclotron-frequency-ratio measurements with a relative precision of 4.8$\times$10$^{-10}$. The obtained mass-excess value is in agreement with the adopted value in the Atomic Mass Evaluation 2020, but is 30 times more precise. With this new value, we confirm the previously observed nonlinearity in the study of the isotope shift of strontium. Moreover, the double-beta ($2β^{+}$) decay $Q$ value of $^{84}$Sr was directly determined to be 1790.115(37) keV, and the precision was improved by a factor of 30. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_02025 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | High-precision measurement of the atomic mass of $^{84}$Sr and implications to isotope shift studies Ge, Zhuang Bai, Shiwei Eronen, Tommi Jokinen, Ari Kankainen, Anu Kujanpää, Sonja Moore, Iain Nesterenko, Dmitrii Reponen, Mikael Nuclear Experiment Atomic Physics The absolute mass of $^{84}$Sr was determined using the phase-imaging ion-cyclotron-resonance technique with the JYFLTRAP double Penning trap mass spectrometer. A more precise value for the mass of $^{84}$Sr is essential for providing potential indications of physics beyond the Standard Model through high-precision isotope shift measurements of Sr atomic transition frequencies. The mass excess of $^{84}$Sr was refined to be -80649.229(37) keV/c$^2$ from high-precision cyclotron-frequency-ratio measurements with a relative precision of 4.8$\times$10$^{-10}$. The obtained mass-excess value is in agreement with the adopted value in the Atomic Mass Evaluation 2020, but is 30 times more precise. With this new value, we confirm the previously observed nonlinearity in the study of the isotope shift of strontium. Moreover, the double-beta ($2β^{+}$) decay $Q$ value of $^{84}$Sr was directly determined to be 1790.115(37) keV, and the precision was improved by a factor of 30. |
| title | High-precision measurement of the atomic mass of $^{84}$Sr and implications to isotope shift studies |
| topic | Nuclear Experiment Atomic Physics |
| url | https://arxiv.org/abs/2404.02025 |