4 research outputs found
Penning-trap mass measurement of Hf
We report on the precise mass measurement of the Hf isotope performed
at the Ion Guide Isotope Separator On-Line facility using the JYFLTRAP double
Penning trap mass spectrometer. The new mass-excess value, ~keV, is in agreement with the literature while being nine times
more precise. The newly determined Hf electron-capture value,
~keV, allows us to firmly reject the population of an
excited state at 1578 keV in Lu and 11 transitions tentatively assigned
to the decay of Hf. Our refined mass value of Hf reduces
mass-related uncertainties in the reaction rate of
HfHf. Thus, the rate for the main photodisintegration
destruction channel of the nuclide Hf in the relevant temperature
region for the process is better constrained.Comment: 4 pages, 2 figure
Penning-trap mass measurement of Hf
International audienceWe report on the precise mass measurement of the Hf isotope performed at the Ion Guide Isotope Separator On-Line facility using the JYFLTRAP double Penning trap mass spectrometer. The new mass-excess value, ~keV, is in agreement with the literature while being nine times more precise. The newly determined Hf electron-capture value, ~keV, allows us to firmly reject the population of an excited state at 1578 keV in Lu and 11 transitions tentatively assigned to the decay of Hf. Our refined mass value of Hf reduces mass-related uncertainties in the reaction rate of HfHf. Thus, the rate for the main photodisintegration destruction channel of the nuclide Hf in the relevant temperature region for the process is better constrained
High-precision Penning-trap mass measurements of Cd and In isotopes at JYFLTRAP remove the fluctuations in the two-neutron separation energies
International audienceWe report on the first direct mass measurements of the Cd and In isotopes performed at the Ion Guide Isotope Separator On-Line facility using the JYFLTRAP double Penning trap mass spectrometer. The masses of In and Cd isotopes are in agreement with the literature, while In and Cd differ from literature by 49, 13 and 85 keV (6.1, 1.9 and 2.1 standard deviations), respectively. The excitation energy of the In first isomeric state, keV, was determined for the first time. The updated mass values removed the fluctuations observed in the two-neutron separation energies and lead to a smoother linear decrease of both isotopic chains. The value for the Cd decay is also found to increase from 3.93(6) to 4.089(8). The reported results indicate an absence of significant structural changes around
High-precision Penning-trap mass measurements of Cd and In isotopes at JYFLTRAP remove the fluctuations in the two-neutron separation energies
International audienceWe report on the first direct mass measurements of the Cd and In isotopes performed at the Ion Guide Isotope Separator On-Line facility using the JYFLTRAP double Penning trap mass spectrometer. The masses of In and Cd isotopes are in agreement with the literature, while In and Cd differ from literature by 49, 13 and 85 keV (6.1, 1.9 and 2.1 standard deviations), respectively. The excitation energy of the In first isomeric state, keV, was determined for the first time. The updated mass values removed the fluctuations observed in the two-neutron separation energies and lead to a smoother linear decrease of both isotopic chains. The value for the Cd decay is also found to increase from 3.93(6) to 4.089(8). The reported results indicate an absence of significant structural changes around