G. Bollen
University of Mainz
53 Papers
538 Citations
G. Bollen is an academic researcher from University of Mainz. The author has contributed to research in topics: Penning trap & Mass spectrometry. The author has an hindex of 19, co-authored 53 publications.
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Papers
Resolution of nuclear ground and isomeric states by a Penning trap mass spectrometer.
G. Bollen,H.-J. Kluge,M. König,T. Otto,G. Savard,H. Stolzenberg,R. B. Moore,G. Rouleau,Georges Audi +8 more
TL;DR: Ground and isomeric states of a nucleus have been resolved for the first time by mass spectrometry for two ion species differing in mass and stored simultaneously in the trap.
Accurate mass determination of short-lived isotopes by a tandem Penning-trap mass spectrometer
H. Stolzenberg,Stéphanie Becker,G. Bollen,F. Kern,Hans-Jürgen Kluge,T. Otto,G. Savard,Lutz Schweikhard,G. Audi,R.B. Moore,R.B. Moore +10 more
TL;DR: A mass spectrometer consisting of two Penning traps has been set up for short-lived isotopes at the on-line mass separator ISOLDE at CERN, and high-accuracy direct mass measurements are made by determining the cyclotron frequency of the stored ions.
Sudden change in the nuclear charge distribution of very light gold isotopes
K. Wallmeroth,G. Bollen,A. Dohn,P. Egelhof,J. Grüner,F. Lindenlauf,U. Krönert,J. Campos,A. Rodríguez Yunta,María José García Borge,A. Venugopalan,J. L. Wood,R. B. Moore,Hannelies Kluge +13 more
TL;DR: On-line resonance-ionization mass spectrometry has been applied to determine the isotope shift and hyperfine structure of 185- 189 Au and 189Aum in the 6s 2S 1/ 2 - 6p 2Pl/2 transition.
Discovery of a nuclear isomer in 65Fe with penning trap mass spectrometry.
Michael Block,C. Bachelet,G. Bollen,M. Facina,Charles M. Folden,C. Guénaut,A. A. Kwiatkowski,D. J. Morrissey,G.K. Pang,A. Prinke,Ryan Ringle,Joshua J. Savory,Peter Schury,Stefan Schwarz +13 more
TL;DR: A new long-lived isomeric state in (65) Fe has been discovered with Penning trap mass spectrometry and high-precision mass measurements of the neutron-rich isotopes (63-65)Fe and (64-66)Co have been performed with the Low-Energy Beam and Ion Trap Facility at the NSCL.
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Nuclear shape transition in light gold isotopes
K. Wallmeroth,G. Bollen,A. Dohn,P. Egelhof,U. Krönert,María José García Borge,J. Campos,A. Rodríguez Yunta,Kristiaan Heyde,C. De Coster,J. L. Wood,Hannelies Kluge,Hannelies Kluge +12 more
TL;DR: In this article, the hyperfine structure and isotope shifts of short-lived gold isotopes with 185 ⩽ A⩽ 190 and the 11 2 − isomer of 189 Au have been investigated by application of on-line resonance ionization mass spectroscopy.
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