New measurement of exotic decay of 225Ac by 14C emission

Guglielmetti, A.; Bonetti, R.; Ardisson, G.; Barci, V.; Giles, T.; Hussonnois, M.; Du, Jiangfeng; Naour, C. Le; Mikheev, V.L.; Pasinetti, A.; Ravn, H. L.; Tretyakova, S.P.; Trubert, D.

doi:10.1007/s10050-001-8661-5

Cited by 6 publications

(1 citation statement)

References 8 publications

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“…Resonantly ionized molecules with rates of the order of 10 3 counts s −1 at the peak of the 0 ← 0 transition were measured at the particle detector. Future production of RaF + molecular rates of the order of 10 9 -10 10 molecules s −1 is feasible using active proton irradiation 45 .…”

Section: Production Of Raf Moleculesmentioning

confidence: 99%

Spectroscopy of short-lived radioactive molecules

Ruiz

Berger

Billowes

et al. 2020

Nature

112

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Molecular spectroscopy offers opportunities for the exploration of the fundamental laws of nature and the search for new particle physics beyond the standard model1–4. Radioactive molecules—in which one or more of the atoms possesses a radioactive nucleus—can contain heavy and deformed nuclei, offering high sensitivity for investigating parity- and time-reversal-violation effects5,6. Radium monofluoride, RaF, is of particular interest because it is predicted to have an electronic structure appropriate for laser cooling6, thus paving the way for its use in high-precision spectroscopic studies. Furthermore, the effects of symmetry-violating nuclear moments are strongly enhanced5,7–9 in molecules containing octupole-deformed radium isotopes10,11. However, the study of RaF has been impeded by the lack of stable isotopes of radium. Here we present an experimental approach to studying short-lived radioactive molecules, which allows us to measure molecules with lifetimes of just tens of milliseconds. Energetically low-lying electronic states were measured for different isotopically pure RaF molecules using collinear resonance ionisation at the ISOLDE ion-beam facility at CERN. Our results provide evidence of the existence of a suitable laser-cooling scheme for these molecules and represent a key step towards high-precision studies in these systems. Our findings will enable further studies of short-lived radioactive molecules for fundamental physics research.

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Section: Production Of Raf Moleculesmentioning

confidence: 99%

Spectroscopy of short-lived radioactive molecules

Ruiz

Berger

Billowes

et al. 2020

Nature

112

View full text Add to dashboard Cite

show abstract

Radioisotopes

Baglin

2006

Kirk-Othmer Encyclopedia of Chemical Technology

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Radioisotopes, also called radionuclides, are atoms that are not stable and decay spontaneously to more stable elements or other atoms by emission of matter or energy. Studies of radioisotopes have led to increased understanding of the forces of Nature, especially the forces vital to nuclear binding and exhibited solely in the microscopic world. Radioisotopes can be used to determine the ages of materials, as radiopharmaceuticals or radiation sources or tracers in medicine, for nondestructive evaluation of materials, for the tracking of groundwater or air flow, for food sterilization, and for scientific analysis. The nuclear physics properties of radioisotopes and the various radiation particles are summarized, including the concepts of half‐life, decay constant, angular momentum, and parity. The modes of nuclear decay and the accompanying radiation are described, as are combined nuclear and atomic processes, and atomic decays and corresponding radiations. Decay data for several useful radioisotopes are given.

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Radioisotopes

Starovoitova

2017

Kirk-Othmer Encyclopedia of Chemical Technology

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Radioisotopes, also called radionuclides, are unstable atoms that spontaneously decay to more stable elements or other atoms by emission of matter or energy. Radioisotopes are routinely used to determine the ages of materials, for diagnostics and treatment of diseases, for nondestructive evaluation of materials, for the tracking of groundwater or air flow, for food sterilization, and for many other applications. This article summarizes the nuclear physics properties of radioisotopes and the various radiation particles, including the concepts of half‐life, decay constant, angular momentum, and parity. The modes of nuclear decay and the accompanying radiation are described, as are combined nuclear and atomic processes, and atomic decays and corresponding radiations. Applications for science, medicine, and industry uses of various isotopes are discussed and their production methods are described.

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New measurement of exotic decay of 225Ac by 14C emission

Cited by 6 publications

References 8 publications

Spectroscopy of short-lived radioactive molecules

Spectroscopy of short-lived radioactive molecules

Radioisotopes

Radioisotopes

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