https://doi.org/10.1140/epja/s10050-023-01176-4
Regular Article - Experimental Physics
Precision mass measurement of 
Hf for nuclear structure of Lu and the 
process
1
Department of Physics, Accelerator laboratory, University of Jyvaskyla, P.O. Box 35(YFL), 40014, University of Jyvaskyla, Finland
2
GSI Helmholtzzentrum für Schwerionenforschung, 64291, Darmstadt, Germany
3
Université de Bordeaux, CNRS/IN2P3, LP2I Bordeaux, UMR 5797, 33170, Gradignan, France
a
arthur.a.jaries@jyu.fi
b
marek.m.stryjczyk@jyu.fi
c
anu.kankainen@jyu.fi
Received:
17
August
2023
Accepted:
21
October
2023
Published online:
10
November
2023
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 Q 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 
Hf
Hf. Thus, the rate for the main photodisintegration destruction channel of the p nuclide Hf in the relevant temperature region for the process is better constrained.
© The Author(s) 2023
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
