Journal article

Publication year: 2010

Pages: 115-127

Journal: Hyperfine Interactions

Volume number: 196

DOI Link: https://doi.org/10.1007/s10751-009-0142-2

Publisher: Springer

Abstract: 

Sharp resonant structures in the cross section of the atomic electron-ion collision process of dielectronic recombination are exploited to study isotope shifts and hyperfine interaction of heavy highly-charged ions. This novel approach provides a conceptual alternative to existing methods. In this contribution, we present a series of measurements, which we performed at the heavy ion storage ring ESR of the GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany. In a first experiment the stable isotopes A = 142 and A = 150 of three-electron neodymium ^ANd^57 + were studied. Isotope shifts of dielectronic resonances associated with 2s − 2p _j (j = 1/2, 3/2) transitions were extracted from the measured data. The evaluation of the energy shift was performed within a full QED framework and yielded a change in the mean-square charge radius of  fm². At GSI, in addition to the investigation of stable isotopes unstable species can be artificially synthesized and studied. Radioisotopes produced in-flight from fragmentation of a ²³⁸U primary beam were injected into the ESR and were subsequently separated by their mass-to-charge ratio. This enabled us to perform first DR experiments with the exotic nuclei ²³⁷U^89 + (Z = 92 )and ²³⁴Pa^88 + (Z = 91).

Harvard Citation style: Brandau, C., Kozhuharov, C., Müller, A., Bernhardt, D., Bosch, F., Boutin, D., et al. (2010) Resonant recombination at ion storage rings: a conceptual alternative for isotope shift and hyperfine studies, Hyperfine Interactions, 196, pp. 115-127. https://doi.org/10.1007/s10751-009-0142-2

APA Citation style: Brandau, C., Kozhuharov, C., Müller, A., Bernhardt, D., Bosch, F., Boutin, D., Currell, F., Dimopoulou, C., Franzke, B., Fritzsche, S., Gumberidze, A., Harman, Z., Jentschura, U., Keitel, C., Kozhedub, Y., Krücken, R., Litvinov, Y., Nolden, F., O’Rourke, B., ...Wolf, A. (2010). Resonant recombination at ion storage rings: a conceptual alternative for isotope shift and hyperfine studies. Hyperfine Interactions. 196, 115-127. https://doi.org/10.1007/s10751-009-0142-2