Abstract
AbstractWe report on the precise mass measurement of the $$^{173}$$
173
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, $${\textrm{ME} = -55390.8(30)}$$
ME
=
-
55390.8
(
30
)
keV, is in agreement with the literature while being nine times more precise. The newly determined $$^{173}$$
173
Hf electron-capture Q value, $$Q_{EC} = 1490.2(34)$$
Q
EC
=
1490.2
(
34
)
keV, allows us to firmly reject the population of an excited state at 1578 keV in $$^{173}$$
173
Lu and 11 transitions tentatively assigned to the decay of $$^{173}$$
173
Hf. Our refined mass value of $$^{173}$$
173
Hf reduces mass-related uncertainties in the reaction rate of $$^{174}$$
174
Hf$$(\gamma ,n)^{173}$$
(
γ
,
n
)
173
Hf. Thus, the rate for the main photodisintegration destruction channel of the p nuclide $$^{174}$$
174
Hf in the relevant temperature region for the $$\gamma $$
γ
process is better constrained.
Funder
Vilho, Yrjö and Kalle Väisälä Foundation
Academy of Finland
Horizon 2020 Framework Programme
Publisher
Springer Science and Business Media LLC
Subject
Nuclear and High Energy Physics