CERN Accelerating science

ISOLDE

ISOLDE determines precise nuclear moments by devising novel experimental technique

Nuclear quadrupole moments (Q), a measure of charge asymmetry in nuclei, are experimentally accessible via the quadrupole interaction frequency νQ=eQVzz/h. To extract Q from this information one needs to knowVzz, the electric-field gradient at the…

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Secrets of beta decay unraveled at ISOLDE

Ernest Rutherford, in 1899, separated radioactive emissions into two types: alpha and beta. Becquerel, in 1900, measured the mass-to-charge ratio of beta particles and identified them as electrons. The theory of β decay was developed by Fermi in…

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Pinpointing the structure of the SnV centre in diamond using emission channelling at ISOLDE

Diamond – beyond its allure as a jewel – exhibits an array of unique physical characteristics such as its hardness, the highest room thermal conductivity of any material (while being electrically insulating when undoped); it can also be doped to…

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Exotic radioactive molecules could reveal physics beyond the Standard Model

The first spectroscopic study of radium monofluoride (RaF) suggests that these radioactive molecules can be used to perform high precision tests of the Standard Model of particle physics. The study was done at ISOLDE, CERN’s radioactive beam…

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ISOLDE dives deeper in the mystery of the odd-even staggering effect

In a recent paper, to appear in Nature Physics in the next weeks (arXiv:1911.08765v3), the CRIS collaboration, located at the ISOLDE facility in CERN, presents measurements of charge radii of exotic copper isotopes that shed further light on one of…

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PUMA: Exploring exotic nuclear phenomena with antimatter

PUMA is a new experiment proposed at both the CERN AD and ISOLDE facilities, that would for the first time transport antiprotons trapped at AD/ELENA to ISOLDE, by carrying them in a trap loaded onto a truck. The antiprotons would then be used for…

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Finding the best candidates for atomic EDM searches

The search for hints of new physics Beyond the Standard Model (BSM) calls for a combination of experimental strategies including both direct searches but also a number of very high-precision measurements of certain quantities looking for deviations…

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MEDICIS: a new CERN facility can help medical research into cancer

Last week, the new CERN-MEDICIS facility has produced radioisotopes for medical research for the first time. MEDICIS (Medical Isotopes Collected from ISOLDE) aims to provide a wide range of radioisotopes, some of which can be produced only at CERN…

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HIE-ISOLDE celebrates the end of the first stage of the energy upgrade and the great physics outcome.

There was an air of celebration at CERN on Wednesday 28th September as nearly 100 invited guests gathered to mark the successful completion of phase 1 of the HIE-ISOLDE project, which aims to provide higher intensity and energy beams, up to 5.5 MeV/…

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ISOLDE sheds light to the nature of the proposed magic number N = 32

The most intuitive properties of the nucleus are its mass and size. Both properties can be precisely studied with dedicated experiments at ISOLDE. Most of the nuclei are deformed, i.e. shaped like a rugby ball or like a pancake, only a few are…

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