Publications by authors named "L Ghys"
The changes in mean-squared charge radii of neutron-deficient gold nuclei have been determined using the in-source, resonance-ionization laser spectroscopy technique, at the ISOLDE facility (CERN). From these new data, nuclear deformations are inferred, revealing a competition between deformed and spherical configurations. The isotopes ^{180,181,182}Au are observed to possess well-deformed ground states and, when moving to lighter masses, a sudden transition to near-spherical shapes is seen in the extremely neutron-deficient nuclides, ^{176,177,179}Au.
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- The mean-square charge radii of mercury isotopes ^{207,208}Hg were studied for the first time, with ^{202,203,206}Hg being remeasured using laser spectroscopy at CERN.
- The research revealed a significant kink in the charge radii at the N=126 neutron shell closure, which offers new insights into nuclear behavior below the Z=82 proton shell closure.
- A theoretical analysis showed that this kink and the odd-even staggering in the nearby isotopes can be largely explained without relying heavily on pairing effects, proposing a new mechanism related to neutron orbital occupation differences in odd- and even-A nuclei.
Background: We conducted a nationwide survey to describe the in-and out-of-hospital flow (diagnosis, treatment and follow-up) of patients with heart failure with reduced ejection fraction (HFrEF).
Method: A survey was developed with five dedicated HF cardiologists. The data are all self-reported by cardiologists.
Resonant laser ionization and spectroscopy are widely used techniques at radioactive ion beam facilities to produce pure beams of exotic nuclei and measure the shape, size, spin and electromagnetic multipole moments of these nuclei. However, in such measurements it is difficult to combine a high efficiency with a high spectral resolution. Here we demonstrate the on-line application of atomic laser ionization spectroscopy in a supersonic gas jet, a technique suited for high-precision studies of the ground- and isomeric-state properties of nuclei located at the extremes of stability.
View Article and Find Full Text PDFBackground: Serum cystatin C (sCysC) and urinary cystatin C (uCysC) are potential biomarkers for early detection of chronic kidney disease (CKD) in cats. An in-depth clinical validation is required.
Objectives: To evaluate CysC as a marker for CKD in cats and to compare assay performance of the turbidimetric assay (PETIA) with the previously validated nephelometric assay (PENIA).