# Mass measurements in the endpoint region of the rp-process at SHIPTRAP

Abstract : The Penning-trap mass spectrometer SHIPTRAP was designed for precision mass measurements of radionuclides produced in fusion–evaporation reactions. The latest measurement campaign covered heavy nuclei (A>90) related to the astrophysical rapid proton capture process. The masses of 34 neutron-deficient radionuclides have been measured since February 2006 with relative uncertainties between 5×10$^{−8}$ and 1×10$^{−7}$. Furthermore, the use of an octupolar RF excitation for the time-of-flight ion-cyclotron-resonance technique was investigated and an increase of the resolving power by a factor of ten was observed in agreement with simulations. This will allow to resolve isomeric states with excitation energies of a few 10 keV only.
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Conference papers

http://hal.in2p3.fr/in2p3-00174395
Contributor : Sandrine Guesnon <>
Submitted on : Monday, September 24, 2007 - 11:35:03 AM
Last modification on : Friday, April 23, 2021 - 10:00:01 AM

### Citation

M. Block, D. Ackermann, K. Blaum, A. Chaudhuri, Z. Di, et al.. Mass measurements in the endpoint region of the rp-process at SHIPTRAP. Conference on Trapped Charged Particles and Fundamental Physics (TCP06), Sep 2006, Parksville, Canada. pp.133-142, ⟨10.1007/s10751-007-9550-3⟩. ⟨in2p3-00174395⟩

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