DENIS-PETIT, David; GOSSELIN, Gilbert; HANNACHI, Fazia; TARISIEN, Medhi; BONNET, Thomas; COMET, Maxime; GOBET, Franck; VERSTEEGEN, Maud; MOREL, Pascal; MÉOT, Vincent; MATEA, Iolanda

doi:10.1103/PhysRevC.96.024604

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DENIS-PETIT, David
Centre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
Direction des Applications Militaires [DAM]

GOSSELIN, Gilbert
Direction des Applications Militaires [DAM]

HANNACHI, Fazia
Centre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]

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Phys.Rev.C. 2017, vol. 96, n° 2, p. 024604

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One promising candidate for the first detection of nuclear excitation in plasma is the 463-keV, 20.26-min-lifetime isomeric state in Rb84, which can be excited via a 3.5-keV transition to a higher lying state. According to our preliminary calculations, under specific plasma conditions, nuclear excitation by electron transition (NEET) may be its strongest excitation process. Evaluating a reliable NEET rate requires, in particular, a thorough examination of all atomic transitions contributing to the rate under plasma conditions. We report the results of a detailed evaluation of the NEET rate based on multiconfiguration Dirac Fock (MCDF) atomic calculations, in a rubidium plasma at local thermodynamic equilibrium with a temperature of 400 eV and a density of 10−2g/cm3 and based on a more precise energy measurement of the nuclear transition involved in the excitation.< Réduire

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Calculation of the rate of nuclear excitation by electron transition in an $^{84m}\mathbf{Rb}$ plasma under the hypothesis of local thermodynamic equilibrium using a multiconfiguration Dirac-Fock approach

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