%A"Deutsch, C" %A"Herman, L" %A"Nguyen, H [Laboratoire de Recherches Physiques, 75 - Paris (France)]" %A"Drawin, H W [Commissariat a l'Energie Atomique, Association Euratom-CEA, Fontenay-aux-Roses (France). Centre d'Etudes Nucleaires]" %D1967 %I; CEA Fontenay-aux-Roses, 92 (France) %2 %J[] %K70 PLASMA PHYSICS AND FUSION TECHNOLOGY, ELECTRIC FIELDS, MAGNETIC FIELDS, PLASMA, STARK EFFECT, THERMONUCLEAR REACTIONS %PMedium: ED; Size: [64] pages %TDisplacements and intensities of the components of hydrogenic lines of the helium atom in the presence of exterior uniform electrical and magnetic fields; Deplacements et intensites des composantes des raies hydrogenoides de l'atome d'helium en presence de champs exterieurs electrique et magnetique uniformes %XThe Waller-Foster method for hydrogenic lines of neutral helium is extended in order to take into account an external magnetic field (vector K) having an arbitrary angle with an external constant electric field (vector F). The diagonal correction has been evaluated numerically taking into account recent experimental data. A Fortran IV program written for the CDC 3600 computer allows to calculate the displacements and the intensities for any hydrogenic transition. Special attention is given to the {l_brace}2-4{r_brace} transitions in neutral helium. (authors) [French] La methode de perturbation de Waller et Foster est generalisee afin de tenir compte d'un champ magnetique exterieur (vecteurK) faisant un angle quelconque avec un champ electrique exterieur (vecteurF). La correction diagonale des matrices de perturbation est evaluee numeriquement a l'aide des donnees atomiques les plus recentes. Un programme ecrit pour l'ordinateur CDC 3600 permet le calcul des deplacements et des intensites pour des transitions hydrogenoides quelconques. Les transitions [2-4]d'helium neutre ont ete etudiees plus particulierement. (auteurs) %0Technical Report %NCEA-R-3233;TRN: FR05R3233093008 %1 %CFrance %Rhttps://doi.org/ TRN: FR05R3233093008 FRN %GFrench