23 research outputs found
Chambres d'ionisation différentielles pour la mesure de variation de période radioactive
No full textWe describe two differential ionization chambers with very low background (~ ± 10-16 A) to measure the lifetime variation of a radioactive isotope as a function of its physical and chemical state. It should be possible to measure effects of order 10-4.Nous avons mis au point deux chambres d'ionisation diffĂ©rentielles Ă trĂšs faible bruit de fond (~ ± 10-16 A) pour nous permettre de mesurer des variations du taux de dĂ©sintĂ©gration d'un isotope radioactif en fonction de son environnement physico-chimique. Des effets de l'ordre de 10-4 doivent pouvoir ĂȘtre mesurĂ©s
MĂSSBAUER STUDY OF RELAXATION EFFECTS IN CRYSTALLINE AND AMORPHOUS DyAg
No full textNo abstract availabl
MOSSBAUER-SPECTROSCOPY OF NP3AS4 - INTERPRETATION OF THE SPECTRA AND OF THE MAGNETIC-BEHAVIOR IN A CRYSTAL-FIELD MODEL
No full textImplantation of tellurium in iron and measurement of the magnetic moment of the first excited state in123Te
No full text
MĂSSBAUER AND NEUTRON DIFFRACTION STUDIES OF NpRu2Si2
No full textNpRu2Si2 has been studied by Mössbauer spectroscopy on powder samples and by neutron diffraction on a single crystal. Below TN=27.5 ± 0.5 K the magnetic ordering is incommensurate (k = [00k] , mk // k) Np moment values are not saturated and an incommensurate modulation is still present at low temperature (T/TN â 1/20)
