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Weak interaction studies via beta-delayed proton emission
/ Alfaurt, Philippe (LP2i Bordeaux) ; Ascher, Pauline (LP2i Bordeaux) ; Blank, Bertram (LP2i Bordeaux) ; Daudin, Laurent (LP2i Bordeaux) ; Gerbaux, Mathias (LP2i Bordeaux) ; Giovinazzo, Jérôme (LP2i Bordeaux) ; Grévy, Stéphane (LP2i Bordeaux) ; Lecanuet, Samuel (LP2i Bordeaux) ; Lépine, Anais (LP2i Bordeaux) ; Roche, Mathieu (LP2i Bordeaux) et al.
CERN-INTC-2024-050 ; INTC-P-574-ADD-2.
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2024 - mult..
Original Document (INTC-P-574) - Full text
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Experimental setup for Weak Interaction Studies with Radioactive ion-beams WISArD
/ Atanasov, D (CERN) ; Cresto, F (LPC, Caen) ; Nies, L (CERN) ; Pomorski, M (LP2I, Bordeaux) ; Versteegen, M (LP2I, Bordeaux) ; Alfaurt, P (LP2I, Bordeaux) ; Araujo-Escalona, V (Leuven U.) ; Ascher, P (LP2I, Bordeaux) ; Blank, B (LP2I, Bordeaux) ; Daudin, L (LP2I, Bordeaux) et al.
The article describes the commissioning and technical development of the Weak Interaction Studies with 32Ar Decay (WISArD) experiment, installed at the radioactive ion-beam facility ISOLDE/CERN. The experiment aims to extend the present limits on scalar and tensor currents in the weak interaction and hence search for physics beyond the Standard Model. [...]
2023 - 11 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 1050 (2023) 168159
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Branching ratio of the super-allowed $\beta$ decay of $^{10}$C
/ Blank, B. (CENBG, Gradignan) ; Aouadi, M. (CENBG, Gradignan) ; Ascher, P. (CENBG, Gradignan) ; Gerbaux, M. (CENBG, Gradignan) ; Giovinazzo, J. (CENBG, Gradignan) ; Grévy, S. (CENBG, Gradignan) ; Kurtukian Nieto, T. (CENBG, Gradignan) ; Dunlop, M.R. (Guelph U.) ; Dunlop, R. (Guelph U.) ; Laffoley, A.T. (Guelph U.) et al.
In an experiment performed at the ISOLDE facility of CERN, the super-allowed beta-decay branching ratio of 10C was determined with a high-precision single-crystal germanium detector. In order to evaluate the contribution of the pile-up of two 511 keV gamma quanta to one of the gamma-ray peaks of interest at 1021.7 keV, data were not only taken with 10C, but also with a 19Ne beam. [...]
arXiv:2004.02559.-
2020-05-31 - 9 p.
- Published in : Eur. Phys. J. A 56 (2020) 156
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Weak interaction studies via beta-delayed proton emission
/ Alfaurt, Philippe (CENBG-IN2P3-CNRS) ; Araujo-Escalona, Victoria (Instituut voor Kern- en Stralingsfysica, Katholieke Universiteit Leuven) ; Ascher, Pauline (CENBG-IN2P3-CNRS) ; Atanasov, Dinko (CERN) ; Blank, Bertram (CENBG-IN2P3-CNRS) ; Cresto, Federica (CENBG-IN2P3-CNRS) ; Daudin, Laurent (CENBG-IN2P3-CNRS) ; Fléchard, Xavier (Normandie Univ, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen) ; Garcia, Alejandro (University of Washington, Seattle) ; Gerbaux, Mathias (CENBG-IN2P3-CNRS) et al.
CERN-INTC-2020-058 ; INTC-P-574.
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2020.
Fulltext
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Simultaneous measurements of the $\beta$ -neutrino angular correlation in $^{32}$Ar pure Fermi and pure Gamow-Teller transitions using $\beta$ -proton coincidences
/ Araujo-Escalona, V. (Leuven U.) ; Atanasov, D. (Leuven U. ; CERN) ; Fléchard, X. (ENSICAEN) ; Alfaurt, P. (CENBG, Gradignan) ; Ascher, P. (CENBG, Gradignan) ; Blank, B. (CENBG, Gradignan) ; Daudin, L. (CENBG, Gradignan) ; Gerbaux, M. (CENBG, Gradignan) ; Giovinazzo, J. (CENBG, Gradignan) ; Grévy, S. (CENBG, Gradignan) et al.
We report first time measurements of the beta-neutrino angular correlation based on the kinetic energy shift of protons emitted in parallel or anti-parallel directions with respect to the positron in the beta decay of $^{32}$Ar. This proof of principle experiment provided simultaneous measurements for the superallowed 0$^+$~$\rightarrow$~0$^+$ transition followed by a 3356~keV proton emission and for a Gamow-Teller transition followed by a 2123~keV proton emission. [...]
arXiv:1906.05135.-
2020-05-14 - 7 p.
- Published in : Phys. Rev. C 101 (2020) 055501
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Scalar current limit from the beta-neutrino correlation: the WISArD experiment
/ Araujo-Escalona, V (Leuven U.) ; Alfaurt, P (CENBG, Gradignan) ; Ascher, P (CENBG, Gradignan) ; Atanasov, D (Leuven U. ; CERN) ; Blank, B (CENBG, Gradignan) ; Daudin, L (CENBG, Gradignan) ; Fléchard, X (Caen U.) ; Gerbaux, M (CENBG, Gradignan) ; Giovinazzo, J (CENBG, Gradignan) ; Grévy, S (CENBG, Gradignan) et al.
Beta - neutrino correlation measurements are key in the research of physics beyond the Standard Model. In pure Fermi beta transitions, the beta-neutrino correlation coefficient, a βν, is sensitive to the presence of scalar currents. [...]
2019 - 9 p.
- Published in : J. Phys.: Conf. Ser. 1308 (2019) 012003
Fulltext: PDF;
In : 42nd Symposium on Nuclear Physics, Cocoyoc, Mexico, 07 - 10 Jan 2019, pp.012003
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Gamma-ray branching ratios in the decay of $^{49}$Cr
/ Blank, B (CENBG, Gradignan) ; Aouadi, M (CENBG, Gradignan) ; Ascher, P (CENBG, Gradignan) ; Gerbaux, M (CENBG, Gradignan) ; Giovinazzo, J (CENBG, Gradignan) ; Goigoux, T (CENBG, Gradignan) ; Grévy, S (CENBG, Gradignan) ; Kurtukian Nieto, T (CENBG, Gradignan) ; Magron, C (CENBG, Gradignan) ; de Roubin, A (CENBG, Gradignan ; Jyvaskyla U.) et al.
The $\gamma$ -decay branching ratios of $^{49}$V have been studied in the $\beta$ /EC decay of $^{49}$Cr. The $\gamma$-ray spectrum has been measured with a 70% relative efficiency co-axial germanium detector calibrated in efficiency with a precision of about 0.5%. [...]
2018 - 6 p.
- Published in : Eur. Phys. J. A 54 (2018) 93
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New exotic beams from the SPIRAL 1 upgrade
/ Delahaye, P. (GANIL) ; Dubois, M. (GANIL) ; Maunoury, L. (GANIL) ; Annaluru, A. (GANIL) ; Angot, J. (LPSC, Grenoble) ; Bajeat, O. (GANIL) ; Blank, B. (CENBG, Gradignan) ; Cam, J.C. (Caen U.) ; Chauveau, P. (GANIL ; CSNSM, Orsay) ; Frigot, R. (GANIL) et al.
Since 2001, the SPIRAL 1 facility has been one of the pioneering facilities in ISOL techniques for reaccelerating radioactive ion beams: the fragmentation of the heavy ion beams of GANIL on graphite targets and subsequent ionization in the Nanogan ECR ion source has permitted to deliver beams of gaseous elements (He, N, O, F, Ne, Ar, Kr) to numerous experiments. Thanks to the CIME cyclotron, energies up to 20 AMeV could be obtained. [...]
arXiv:1903.02220.-
2020-01-15 - 6 p.
- Published in : Nucl. Instrum. Methods Phys. Res., B 463 (2020) 339-344
Fulltext: PDF; Fulltext from Publisher: PDF; Fulltext from publisher: PDF;
In : 18th International Conference on Electromagnetic Isotope Separators and Related Topics, Geneva, Switzerland, 16 - 21 Sep 2018, pp.339-344
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