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Damping effects in Penning trap mass spectrometry
/ George, S (Heidelberg, Max Planck Inst.) ; Block, M (Darmstadt, GSI) ; Kowalska, M (CERN ; Heidelberg, Max Planck Inst.) ; Dworschak, M (Darmstadt, GSI ; Mainz U., Inst. Phys.) ; Neidherr, D (Mainz U., Inst. Phys.) ; Blaum, K (Heidelberg U. ; Heidelberg, Max Planck Inst.) ; Schweikhard, L (Greifswald U.) ; Ramirez, E M (Darmstadt, GSI) ; Breitenfeldt, M (Greifswald U.) ; Kretzschmar, M (Mainz U., Inst. Phys.) et al.
Collisions of ions with residual gas atoms in a Penning trap can have a strong influence on the trajectories of the ions, depending on the atom species and the gas pressure. We report on investigations of damping effects in time-of-flight ion-cyclotron resonance mass spectrometry with the Penning trap mass spectrometers ISOLTRAP at ISOLDE/CERN (Geneva, Switzerland) and SHIPTRAP at GSI (Darmstadt, Germany). [...]
2011
- Published in : Int. J. Mass Spectrom. 299 (2011) 102-112
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Time-separated oscillatory fields for high-precision mass measurements on short-lived Al and Ca nuclides
/ George, Simon (Darmstadt, GSI ; Mainz U., Inst. Phys.) ; Audi, Georges (CSNSM, Orsay) ; Blank, B. (CENBG, Gradignan) ; Blaum, K. (Darmstadt, GSI ; Mainz U., Inst. Phys. ; Heidelberg, Max Planck Inst.) ; Breitenfeldt, M. (Greifswald U.) ; Hager, U. (Jyvaskyla U.) ; Herfurth, F. (Darmstadt, GSI) ; Herlert, A. (CERN) ; Kellerbauer, A. (Heidelberg, Max Planck Inst.) ; Kluge, H.J. (Darmstadt, GSI ; Heidelberg U.) et al.
High-precision Penning trap mass measurements on the stable nuclide $^{27}$Al as well as on the short-lived radionuclides $^{26}$Al and $^{38,39}$Ca have been performed by use of radio-frequency excitation with time-separated oscillatory fields, i.e. Ramsey's method, as recently introduced for the excitation of the ion motion in a Penning trap, was applied. [...]
arXiv:0801.2593.-
2008 - 7 p.
- Published in : EPL 82 (2008) 50005
Fulltext: PDF; External link: Fulltext
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Ramsey Method of Separated Oscillatory Fields for High-Precision Penning Trap Mass Spectrometry
/ George, S (GSI, Germany ; Institut fur Physik, Johannes Gutenberg-Universitat, Germany) ; Baruah, S (Institut fur Physik, Ernst-Moritz-Arndt-Universitat, Germany) ; Blank, B (Centre d’Etudes Nucleaires de Bordeaux-Gradignan, France) ; Blaum, K (GSI, Germany ; Institut fur Physik, Johannes Gutenberg-Universitat, Germany) ; Breitenfeldt, M (Institut fur Physik, Ernst-Moritz-Arndt-Universitat, Germany) ; Hager, U (Department of Physics, University of Jyvaskyla, Finland) ; Herfurth, F (GSI, Germany) ; Herlert, A (CERN) ; Kellerbauer, A G (Max-Planck Institut fur Kernphysik, Germany) ; Kluge, H J (GSI, Germany ; Physikalisches Institut, Ruprecht-Karls-Universitat, Germany) et al.
Ramsey’s method of separated oscillatory fields is applied to the excitation of the cyclotron motion of short-lived ions in a Penning trap to improve the precision of their measured mass values. The theoretical description of the extracted ion-cyclotron-resonance line shape is derived and its correctness demonstrated experimentally by measuring the mass of the short-lived 38Ca nuclide with an uncertainty of 1.1×10-8 using the Penning trap mass spectrometer ISOLTRAP at CERN. [...]
2007
- Published in : Phys. Rev. Lett. 98 (2007) 162501
APS Published version, local copy: PDF;
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The Ramsey method in high-precision mass spectrometry with Penning traps : Experimental results
/ George, S (Johannes Gutenberg-Univ., Mainz, Germany ; GSI, Darmstadt, Germany) ; Blaum, K (Johannes Gutenberg-Univ., Mainz, Germany ; GSI, Darmstadt, Germany) ; Herfurth, F (GSI, Darmstadt, Germany) ; Herlert, A (CERN) ; Kretzschmar, M (Johannes Gutenberg-Univ., Mainz, Germany) ; Nagy, S (Johannes Gutenberg-Univ., Mainz, Germany) ; Schwarz, S (Michigan State Univ., USA) ; Schweikhard, L (Ernst-Moritz-Arndt-Univ, Greifswald, Germany) ; Yazidjian, C (GSI, Darmstadt, Germany ; CERN)
The highest precision in direct mass measurements is obtained with Penning trap mass spectrometry. Most experiments use the interconversion of the magnetron and cyclotron motional modes of the stored ion due to excitation by external radiofrequency-quadrupole fields. [...]
physics/0701236.-
2007 - 12 p.
- Published in : Int. J. Mass Spectrom. 264 (2007) 110-121
Access to fulltext document: PDF; External link: physics/0701236 PDF
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Ramsey Method of Separated Oscillatory Fields for High-Precision Penning Trap Mass Spectrometry
/ George, S ; Baruah, S ; Blank, B ; Blaum, K ; Breitenfeldt, M ; Hager, U ; Herfurth, F ; Herlert, Alexander (CERN) ; Kellerbauer, A G ; Kluge, H J et al.
Ramsey's method of separated oscillatory fields is applied to the excitation of the cyclotron motion of short-lived ions in a Penning trap to improve the precision of their measured mass. The theoretical description of the extracted ion-cyclotron-resonance line shape is derived out and its correctness demonstrated experimentally by measuring the mass of the short-lived $^{38}$Ca nuclide with an uncertainty of $1.6\cdot 10^{-8}$ using the ISOLTRAP Penning trap mass spectrometer at CERN. [...]
nucl-ex/0701027.-
2007 - 5 p.
- Published in : Phys. Rev. Lett. 98 (2007) 162501
APS Published version, local copy: PDF; Access to fulltext document: PDF; External link: nucl-ex/0701027 PDF
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