Author: "Fabian, X." / Topic: ion traps - Searchworks@Jio Institute Digital Library Search Results

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Start Over Author "Fabian, X." Topic ion traps

Author: Liénard, E., Ban, G., Couratin, C., Delahaye, P., Durand, D., Fabian, X., Fabre, B., Fléchard, X., Finlay, P., Mauger, F., Méry, A., Naviliat-Cuncic, O., Pons, B., Porobic, T., Quéméner, G., Severijns, N., Thomas, J., and Velten, Ph.
Subjects: ION traps, WEAK interactions (Nuclear physics), ANGULAR correlations (Nuclear physics), ACQUISITION of data, PARAMETER estimation
Abstract: The experimental achievements and the results obtained so far with the LPCTrap device installed at GANIL are presented. The apparatus is dedicated to the study of the weak interaction at low energy by means of precise measurements of the β − ν angular correlation parameter in nuclear β decays. So far, the data collected with three isotopes have enabled to determine, for the first time, the charge state distributions of the recoiling ions, induced by shakeoff process. The analysis is presently refined to deduce the correlation parameters, with the potential of improving both the constraint deduced at low energy on exotic tensor currents (He) and the precision on the V element of the quark-mixing matrix (Ar and Ne) deduced from the mirror transitions dataset. [ABSTRACT FROM AUTHOR]
Published: 2015
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Author: Couratin, C., Fabian, X., Fabre, B., Pons, B., Fléchard, X., Liénard, E., Ban, G., Breitenfeldt, M., Delahaye, P., Durand, D., Méry, A., Naviliat-Cuncic, O., Porobic, T., Quéméner, G., Rodríguez, D., Severijns, N., Thomas, J. -C., and Van Gorp, S.
Subjects: *ION traps, *ARGON, *ATOM trapping, *AUGER effect, *RADIOACTIVE decay, *IONIZATION (Atomic physics), *SPECTROMETERS
Abstract: The electron shakeoff of 35Cl atoms resulting from the ß+ decay of 35Ar+ ions has been investigated using a Paul trap coupled to a recoil-ion spectrometer. The charge-state distribution of the recoiling daughter nuclei is compared to theoretical calculations accounting for shakeoff and Auger processes. The calculations are in excellent agreement with the experimental results and enable one to identify the ionization reaction routes leading to the formation of all charge states. [ABSTRACT FROM AUTHOR]
Published: 2013
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Author: Porobić, T., Beck, M., Breitenfeldt, M., Couratin, C., Finlay, P., Knecht, A., Fabian, X., Friedag, P., Fléchard, X., Liénard, E., Ban, G., Zákoucký, D., Soti, G., Van Gorp, S., Weinheimer, Ch., Wursten, E., and Severijns, N.
Subjects: *SPACE charge, *ION traps, *CYCLOTRON resonance, *MAGNETRONS, *HELIUM
Abstract: The influence of space-charge on ion cyclotron resonances and magnetron eigenfrequency in a gas-filled Penning ion trap has been investigated. Off-line measurements with K + 39 using the cooling trap of the WITCH retardation spectrometer-based setup at ISOLDE/CERN were performed. Experimental ion cyclotron resonances were compared with ab initio Coulomb simulations and found to be in agreement. As an important systematic effect of the WITCH experiment, the magnetron eigenfrequency of the ion cloud was studied under increasing space-charge conditions. Finally, the helium buffer gas pressure in the Penning trap was determined by comparing experimental cooling rates with simulations. [ABSTRACT FROM AUTHOR]
Published: 2015
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