A study of Na2 diffuse bands in violet by the excitation through self-broadenedD-lines

Milošević, Slobodan; Pichler, Goran

doi:10.1007/bf01436558

Cited by 5 publications

(1 citation statement)

References 20 publications

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“…The latter is responsible for the ubiquitous Na 2 violet and K 2 yellow bands. [32][33][34][35][36][37][38] The hyperfine structure of the NaK 2͑c͒ 3 ⌺ + , 1 3 ⌬, 4 3 ⌺ + , and 1͑b͒ 3 ⌸ electronic states has been measured, and the Fermi contact constants for all these states are found to be within a few percent of the value 1.0 ϫ 10 −2 cm −1 . 26,27,[39][40][41][42][43] This similarity is due to the fact that these are all Rydberg states dominated by the ion-core ground state configuration.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of the NaK 3Π3 double minimum state

Morgus

Burns

Miles

et al. 2005

The Journal of Chemical Physics

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We have used the Doppler-free, perturbation-facilitated optical-optical double-resonance technique to investigate the vibrational, rotational, and hyperfine structure of the 3 (3)Pi double minimum state of NaK. Since this electronic state arises from an avoided crossing with the nearby 4 (3)Pi state, we observe striking patterns in the data that provide a sensitive probe of the electronic wave function in the various regions of the double well potential. A single-mode cw dye laser excites 2(A) (1)Sigma(+)(v(A),J) approximately 1(b) (3)Pi(Omega=0)(v(b),J) mixed singlet-triplet "window" levels from thermally populated rovibrational ground state levels, 1(X) (1)Sigma(+)(v(X),J+/-1). Further excitation by a single-mode cw Ti:sapphire laser selects various 3 (3)Pi(0)(v(Pi),J(Pi)) rovibrational levels, which are detected by observing direct 3 (3)Pi(0)-->1(a) (3)Sigma(+) fluorescence in the green spectral region. Using the inverse perturbation approximation method, we have determined a 3 (3)Pi(0) potential curve that reproduces the measured energies to approximately 0.24 cm(-1). In addition, the hyperfine and spin-orbit constants, b(F) and A(v), have been determined for each region of the potential curve.

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Section: Introductionmentioning

confidence: 99%

Experimental study of the NaK 3Π3 double minimum state

Morgus

Burns

Miles

et al. 2005

The Journal of Chemical Physics

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Heat pipe research and development in east european countries

Polasek

1989

Heat Recovery Systems and CHP

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Near-infrared bound–free emission from the NaK molecule

Huennekens

Loza

Masters

et al. 1988

The Journal of Chemical Physics

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We report the observation of bound–free emission corresponding to the lowest triplet transition 1 3Π→1 3Σ+ of the NaK molecule. In the experiment, specific levels of the upper triplet state were populated directly from the ground state by virtue of spin–orbit induced perturbations between the 1 3Π0 and 2 1Σ+ states. Oscillations in the fluorescence spectra between 1.1 and 1.6 μm reflect the probability distribution (wave function squared) in the bound upper state. We have also carried out quantum mechanical simulations of the fluorescence spectra, based on recent ab initio calculations of the relevant potential curves. These simulations verify the identification of this near-infrared emission and provide a critical test for the calculated potentials.

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A study of Na2 diffuse bands in violet by the excitation through self-broadenedD-lines

Cited by 5 publications

References 20 publications

Experimental study of the NaK 3Π3 double minimum state

Experimental study of the NaK 3Π3 double minimum state

Heat pipe research and development in east european countries

Near-infrared bound–free emission from the NaK molecule

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