High-frequency Ramsey excitation in a Penning trap
2007 (English)In: Journal of Instrumentation, ISSN 1748-0221, Vol. 2, no P06003, 1-14 p.Article in journal (Refereed) Published
The Ramsey excitation method for high-precision mass-measurements of highly-charged ions has been investigated and benchmarked using H2+ ions in the Penning-trap mass-spectrometer SMILETRAP. The reason for using H2+ ions are their high cyclotron frequency which is typical for the highly-charged ions usually used at SMILETRAP. Two-, three- and four-pulse Ramsey excitation data are analyzed with the help of recent theoretical work and are compared with the previously used single-pulse excitation data. An improvement factor of 2.9 in the statistical uncertainty is achieved. Furthermore the mass of 76Se, included in the previous Q-value measurement of the 76Ge neutrinoless double beta decay, is checked using 76Se25+ ions and a three-pulse Ramsey excitation. The results show a convincing agreement with the measurement when using single-pulse excitation and therefore our Q-value of 2039.006(50) keV, performed with single-pulse excitation, is confirmed.
Place, publisher, year, edition, pages
England/Italien: IOP, SISSA , 2007. Vol. 2, no P06003, 1-14 p.
Mass spectrometers, Instrumentation and methods for time-of-flight (TOF) spectroscopy, Analysis and statistical methods
Atom and Molecular Physics and Optics
Research subject Physics
IdentifiersURN: urn:nbn:se:uu:diva-218629DOI: 10.1088/1748-0221/2/06/P06003ISI: 000253651600003OAI: oai:DiVA.org:uu-218629DiVA: diva2:696356