As previously reported3,4 the optical pumping method was succesfully used to
determine the nuclear magnetic moments of135Ba,137Ba,171Yb and173Yb. This method
has now been extended to43Ca and87Sr. The nuclear moments of the Ba- and
Yb-isotopes have been remeasured by means of an improved experimental technique.
Especially the influence of the light shift has been investigated and the
nuclear moment... hiện toàn bộ
The perturbation theoretical results for the self-energy and the mass of the
polaron are given in 4-th order. Even for a coupling strength usually assumed in
NaCl (g2=6) the deviations from the values found inFeynman's variational
approach are negligible. A remark concerning the approximation character
ofFeynman's method is made from the comparison of the expressions for the
self-energy.
Es werden genaue Intensitätsmessungen an der Bande λ 7887 des
Rotations-schwingungsspektrums des Acetylens ausgeführt. Im Einklang mit der
Feinstrukturanalyse der vorhergehenden Arbeit erhält man einen
Intensitätsverlauf, der einer1Σ —1Σ-Kombination entspricht, d. h. die i-Faktoren
(Übergangswahrscheinlichkeiten) sind bei R (J) i=J+1 und bei P (J) i=J. Der bei
der Bande beobachtete Intensitätswech... hiện toàn bộ