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Internal conversion and summing effects in heavy-nuclei spectroscopy
Theisen C., Lopez-Martens A., Bonnelle C.
Nuclear Instruments and Methods in Physics Research Research: Accelerators, Spectrometers, Detectors and Associated Equipment 589 (2008) 230-242 - http://hal.in2p3.fr/in2p3-00275392
Physique/Physique Nucléaire Expérimentale
Internal conversion and summing effects in heavy-nuclei spectroscopy
Ch. Theisen1, A. Lopez-Martens2, Christiane Bonnelle3
1 :  IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers (ex DAPNIA)
CEA : DSM/IRFU
France
2 :  CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse
http://www-csnsm.in2p3.fr/
CNRS : UMR8609 – IN2P3 – Université Paris XI - Paris Sud
batiments 104 et 108 - 91405 Orsay Campus
France
3 :  LCPMR - Laboratoire de Chimie Physique - Matière et Rayonnement
http://www.lcpmr.upmc.fr/
Université Pierre et Marie Curie (UPMC) - Paris VI – CNRS : UMR7614
11 Rue Pierre et Marie Curie 75231 Paris Cedex 05
France
Internal conversion of low-energy nuclear transitions occurs with a high probability in heavy nuclei. After the emission of the conversion electron, a cascade of X-rays, Auger or Coster–Krönig electrons takes place. In $\alpha$-decay experiments in which the nuclei of interest are implanted into a silicon detector, these atomic processes contribute to the detected energy. To understand the distortions of $\alpha$-particle energy spectra, knowledge of the various atomic yields is required. Using state-of-the-art calculations, new atomic yields are computed in $_99$Es and compared to those available in the literature. Detailed simulations of the $^{251}_{101}$Md $\alpha$ decay are performed and compared to experimental data. Possible ways to discriminate between the available atomic yields are also discussed.

Articles dans des revues avec comité de lecture
2008
Nuclear Instruments and Methods in Physics Research Research: Accelerators, Spectrometers, Detectors and Associated Equipment
589
230-242

IRFU-08-17
23.20.Nx; 32.50.+d; 32.80.Hd; 23.60.+e
Expérience GANIL, spectrometre LISE
Internal conversion and extranuclear effects – Fluorescence – Auger effect – alpha decay
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