B i Absorption-Line Series at High Resolution

Garton, W. R. S.; Tomkins, F. S.

doi:10.1086/150281

Cited by 72 publications

(33 citation statements)

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“…The Q-branches are unaffected by the 1-uncoupling phenomenon, that is why we have used the Q-branch to evaluate the rotational constants for the L 2 re-state. The idea of an np-complex is further supported by looking at the first ionisation thresholds of the three alkaline earths, Ca=2,028.15A- [6], Sr=2,177.13A [3] and Ba=2,378.96A [13], and the term values for the np atomic states ( n -5 , 6 & 7 for Ca, Sr and Ba respectively). The np-complex originating from the 5p atomic state of Ca atom is observed at 3,060A whereas the corresponding np-complex in SrH originating from the 6p atomic state of Sr was observed at 3,290A and the analogous np-complex in BaH originating from the 7p-atomic state of Barium is expected to lie at longer wavelength than in SrH and is indeed observed at 3,694A.…”

Section: Discussionmentioning

confidence: 99%

On thep-complex spectra of the BaH molecule

et al. 1985

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We report new high resolution measurements on the photoabsorption spectra of BaH in the wavelength region 3,000/~-3,800A using the second order of a 3.4 metre Ebert spectrograph and a High pressure xenon arc as the background source of continuum. Observations include two new electronic transitions of BaH and BaD, denoted as K2S-X22; at 3,725A and L2FI-X22; at 3,694A, which are forming a np-complex orginating from the 7p atomic state of barium. A rotational analysis of the band systems have been carried out and effective rotational constants are determined.

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Section: Discussionmentioning

confidence: 99%

On thep-complex spectra of the BaH molecule

et al. 1985

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“…In strongly magnetized condensed-matter systems, the states of the quasi-free electron gas condense into Landau bands, leading to fundamental alterations in the transport properties of the whole electron gas [2]. In atomic systems, spectral effects of high B-fields on highly excited Rydberg atoms [3,4]), such as quasi-Landau resonances [5], are well known and have been studied extensively (see [6,7] and references therein).…”

Section: Introductionmentioning

confidence: 99%

Atoms and plasmas in a high-magnetic-field trap

Raithel¹,

Knuffman²,

Shah³

et al. 2008

AIP Conference Proceedings

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We investigate cold rubidium plasmas in a particle trap that has the unique capability to simultaneously laser-cool and trap neutral atoms as well as to confine plasmas in magnetic fields of about three Tesla. The atom trap is a high-field Ioffe-Pritchard laser trap, while the plasma trap is a Ioffe-Penning trap that traps electrons and ions in separate wells. The observed plasma dynamics is characterized by a breathing-mode oscillation of the positive (ionic) plasma component, which feeds back on the behavior of the negative (electron) component of the plasma. At higher densities, the observed oscillations become nonlinear. The electron component has been found to undergo rapid cooling. We further report on the recombination of magnetized plasmas into Rydberg atoms in transient traps and quasi-steady-state traps. In transient traps, large numbers of recombined Rydberg atoms in high-lying states are observed. In quasi-steady-state traps, the measured numbers of recombined atoms are lower and the binding energies higher.

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“…The level energies of the 6snp P series and their perturbers have been determined by Garton and Tomkins [2], Armstrong et al [3], and Post et al [4]. From the multichannel quantum-defect theory (MQDT) analysis [3,5] is known that the 6snp P series is strongly perturbed by levels of the 5d7p, 5d4f and 5d8p configurations in the energy region of interest.…”

Section: Introductionmentioning

confidence: 99%

Stark effect in odd-parity J = 1 levels of neutral barium

Rinkleff

Wehmschulte

1997

Z Phys D - Atoms, Molecules and Clusters

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Stark splitting of the barium 6snp P states with principal quantum numbers ranging from 8 to 15 and of the 5d7p P perturber level was measured in an atomic beam via pulsed laser excitation with timeand wave length-resolved fluorescence detection at low electric field strengths. Tensor polarizabilities were derived from the quantum beat signals observed in pure homogeneous electric fields. Strong variations of the tensor polarizabilities of the levels in the 6snp P series were found.

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B i Absorption-Line Series at High Resolution

Cited by 72 publications

References 0 publications

On thep-complex spectra of the BaH molecule

On thep-complex spectra of the BaH molecule

Atoms and plasmas in a high-magnetic-field trap

Stark effect in odd-parity J = 1 levels of neutral barium

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