Advanced seminar, WS09/10
Physics with stored and cooled ions
Seminar room Blaum (MPI Kphys / kHS)
fortnightly, Wed. 15.00 - 17.00
Seminar program
Date: | 21.10.2009 |
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Speaker: | Henrik Buhr |
Title: | Hot Water in a Cool Place - Dissociative Recombination of D3O+ |
Date: | 11.11.2009 |
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Speaker: | Oliver Trapp |
Title: | Determination of the absolute configuration of chiral molecules by CEI |
Date: | 18.11.2009 |
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Speaker: | Yuri Litvinov |
Title: | Mass and lifetime measurements of stored exotic nuclei |
Date: | 02.12.2009 |
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Speaker: | Mario Mendes |
Title: | Isomers in Space - Dissociative Recombination of DCND+ |
Date: | 16.12.2009 |
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Speaker: | Jens Ketelaer |
Title: | TRIGA-TRAP: High-precision mass measurements on neutron-rich fission products and actinoides |
Abstract
The nuclear mass differs from the constituent masses by the binding energy and, thus,
reflects all interactions within the nucleus. Therefore, high-precision mass data play
an important role, e.g. in nuclear structure studies as well as in astrophysical
calculations of the process responsible for the creation of heavy elements. Whereas the
neutron-deficient side of the nuclear chart has already been quite well investigated,
most of the interesting neutron-rich nuclides are still not available for experiments.
Before future radioactive beam facilities will provide access to nuclides involved in
the rapid-neutron capture process (r-process), the research reactor TRIGA Mainz can be
used for first experiments pushing away from the valley of stability towards the
r-process path.
The double-Penning trap mass spectrometer TRIGA-TRAP has been recently installed as a
part of the TRIGA-SPEC project to perform high-precision mass measurements on
neutron-rich fission products. In addition, samples of actinoid elements will be
investigated as well. Recently, the first direct mass measurement on 241Am has been
performed at TRIGA-TRAP. Together with the three nobelium isotopes 252-254No investigated
last year at SHIPTRAP (GSI) these are the very first direct mass measurements on
elements above uranium. TRIGA-TRAP can provide new anchor points and test the presently
accepted mass values for the actinoides. Besides the measurement program, new detection
techniques like a non-destructive ion detection with single-ion sensitivity will be
developed and tested.
Date: | 13.01.2010 |
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Speaker: | Max Berg |
Title: | Vibrational spectroscopy of H3+: advancing into the visible spectral region |