[en] Radiative data for transitions of astrophysical interest in radioactive elements Ra I, Ra II, Ac I and Ac II have been computed using a semi- empirical relativistic Hartree- Fock approach including core polarization effects. Most of the oscillator strengths reported in the present paper are new. A possible detection of radium ( Ra II) and actinium ( Ac II) in the spectrum of the stars HD 101065 and HR 465 is examined and discussed.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Quinet, Pascal ; Université de Liège - ULiège > Département de physique > Physique nucléaire, atomique et spectroscopie
Argante, C.
Fivet, V.
Terranova, C.
Yushchenko, A. V.
Biémont, Emile ; Université de Liège - ULiège > Département de physique > Physique nucléaire, atomique et spectroscopie
Language :
English
Title :
Atomic data for radioactive elements RaI, RaII, AcI and AcII and application to their detection in HD 101065 and HR 465
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