Mass measurements in the vicinity of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi mathvariant="italic">r</mml:mi><mml:mi> </mml:mi><mml:mi mathvariant="italic">p</mml:mi></mml:mrow></mml:math>-process and the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>ν</mml:mi><mml:mi> </mml:mi><mml:mi>p</mml:mi></mml:mrow></mml:math>-process paths with the Penning trap facilities JYFLTRAP and SHIPTRAP

The masses of very neutron-deficient nuclides close to the astrophysical $\mathit{r} \mathit{p}$- and $\ensuremath{\nu} p$-process paths have been determined with the Penning trap facilities JYFLTRAP at JYFL/Jyv\"askyl\"a and SHIPTRAP at GSI/Darmstadt. Isotopes from yttrium ($Z=39$) to palladium ($Z=46$) have been produced in heavy-ion fusion-evaporation reactions. In total, 21 nuclides were studied, and almost half of the mass values were experimentally determined for the first time: $^{88}\mathrm{Tc}$, $^{90\ensuremath{-}92}\mathrm{Ru}$, $^{92\ensuremath{-}94}\mathrm{Rh}$, and $^{94,95}\mathrm{Pd}$. For the $^{95}\mathrm{Pd}$${}^{m}$, ($21/{2}^{+}$) high-spin state, a first direct mass determination was performed. Relative mass uncertainties of typically $\ensuremath{\delta}m/m=5\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}8}$ were obtained. The impact of the new mass values has been studied in $\ensuremath{\nu} p$-process nucleosynthesis calculations. The resulting reaction flow and the final abundances are compared with those obtained with the data of the Atomic Mass Evaluation 2003.