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  High-precision mass measurements in the realm of the deformed shell closure N=152

Eibach, M. (2013). High-precision mass measurements in the realm of the deformed shell closure N=152. PhD Thesis, Ruprecht-Karls-Universität, Heidelberg.

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phd_thesis_final.pdf (beliebiger Volltext), 36MB
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 Urheber:
Eibach, Martin1, Autor           
Blaum, Klaus1, Gutachter
Litvinov, Yuri2, Gutachter
Affiliations:
1Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society, ou_904548              
2GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, ou_persistent22              

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 Zusammenfassung: The nuclear masses reflect the sum of all interactions inside a nucleus. Their precise knowledge can be used to benchmark nuclear mass models and to gain nuclear structure information. Penning-trap mass spectrometers have proven their potential to obtain lowest uncertainties. Uniquely located at a nuclear reactor, the double Penning-trap mass spectrometer TRIGA-TRAP is dedicated to measurements in the neutron-rich region. For a gain in sensitivity a non-destructive detection system for single ion mass measurements was adopted. This includes the implementation of a narrow band-pass lter tuned to the heavy ion cyclotron frequency as well as a cryogenic low-noise amplifier. For off-line mass measurements, the laser ablation ion source was equipped with a newly developed miniature radiofrequency quadrupole trap in order to improve the extraction efficiency. A more economic use of the radioactive material enabled mass measurements using only 1015 atoms of target material. New mass measurements were performed within this work in the realm of the deformed shell closure N =152. Their implementation into the atomic-mass evaluation improved the uncertainty of more than 80 nuclides in the heavy mass region and simultaneously shifted the absolute mass of two alpha decay chains

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Sprache(n): eng - English
 Datum: 2013-12-04
 Publikationsstatus: Angenommen
 Seiten: IV, 119 S. : Ill., graph. Darst.
 Ort, Verlag, Ausgabe: Heidelberg : Ruprecht-Karls-Universität
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 Art des Abschluß: Doktorarbeit

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