Barium Rydberg state

Figure 7. High-resolution spectrum of barium Rydberg states. The 6snd D2 series can be followed up to 40 GHz (fi = 290) below the ionization limit. Besides the Dj series (strong signals), P states appear as smaller lines. (Taken from Ref. 36.)...

Fig.9.24. Delayed-coincidence recordings of decay curves for excited barium 6snd D2 states and plot of lifetime results for perturbed barium Rydberg state sequences. An excitation scheme can be found in Fig.9.5 ([9.101, first Ref.] and [9.102])... 

C.T.W. Lahaye and W.Hogervorst (1988) Electric field induced interference effects in bound Rydberg states of barium Preprint... 

J. Boulmer, P. Camus, P. Pillet, Autoionizing double Rydberg states in barium, in Electronic and Atomic Collisions, ed. by H.B. Gilbody, W.R. Newell, F.H. Read A.C. Smith (Elsevier, Amsterdam, 1988)... 

Figure 12. Two-step excitation ( 2- l) of the 65l7p P, Rydberg state of barium using copropagating laser beams. (Taken from Ref. 26.)...

Figure 19. High-resolution spectrum of the 6sl4d Rydberg state of barium recorded by optical-optical double resonance. (Taken from Ref. 50.)...

Figwe 20. Isotope shifts of even barium isotopes recorded for unperturbed (top row) and perturbed (bottom row) Ba Rydberg states. (Taken from Ref. 51.)... 

Note added in proof Recently term values of odd-parity Rydberg states of barium 6snp Pj, Po,i,2 and 6snf p3, F2,3,4) have been measured and analysed within the framework of MQDT. Furthermore hyperfine structure data on 6snp Pi and 6sn/ F3 series have been reported and compared to MQDT calculations. ... 

Doppler-free spectra of 6snp Pi (10 n 40) Rydberg states of barium (see Figures 12 and 13) have been recorded by employing thermionic detection after resonant two-step excitation via quadrupole (65 5d D2)- dipole (5d D2 65np Pi) transitions (cf. Section 2.2.2). In Figure 55 the frequencies of the hyperfine components iy = 1/2, 3/2, and 5/2 of Ba relative to Ba have been plotted versus the principal quantum number n. Apart from the correction for the normal mass shift,... 

Komara RA, Gearba MA, Fehrenbach CW, Lundeen SR (2(X)5) Ion properties from high-L Rydberg fine structure dipole polarizability of Si2+. J Phys B 38 S87-S95 Snow EL, Lundeen SR (2007) Fine-structure measurements in high-L n = 17 and 20 Rydbeig states of barium. Phys Rev A 76 052505... 

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