New and very accurate data of isotope shifts and relative isotope shifts in 234U, 236U, 238U are presented. The invariance of the relative isotope shift, for the transitions we have investigated, supports the hypothesis that the so-called specific mass effect is negligible in uranium.
© 1976 Optical Society of America
J. M. Gagné, S. Nguyen Van, J. P. Saint-Dizier, and P. Pianarosa, "Isotope shift of 234U, 236U, 238U in UI," J. Opt. Soc. Am. 66, 1415-1416 (1976)