1. |
- Khodorkovskii, M. A., et al.
(author)
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Electronic spectra of ArXe molecules in the region of Xe* (5d, 7s, 7p, 6p '), 80 300-89 500 cm(-1), using resonantly enhanced multiphoton ionization
- 2010
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In: Journal of Physics B. - : IOP Publishing. - 0953-4075 .- 1361-6455. ; 43:23, s. 235101-
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Journal article (peer-reviewed)abstract
- The electronic spectra of ArXe molecules in the 80 300-89 500 cm(-1) region were recorded by (2 + n) and (3 + n) REMPI methods. The vibrational progressions attributed to transitions of molecules from the ground state to the bounded excited state and wide unstructured bands related to transitions to the continuous upper state were obtained. The molecular constants of ArXe* were calculated for all the observed progressions in the 80 300-87 000 cm(-1) region as an approximation of an anharmonic oscillator and the Morse potential. For different excited states the energy of harmonic oscillator and the dissociation energy are changed from 10 to 100 cm(-1) and from 70 to 750 cm(-1), respectively.
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2. |
- Khodorkovskii, M. A., et al.
(author)
-
Electronic spectra of ArXe molecules in the region of Xe* (6s ', 6p, 5d), 77 000-80 200 cm(-1), using resonantly enhanced multiphoton ionization
- 2010
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In: Journal of Physics B. - : IOP Publishing. - 0953-4075 .- 1361-6455. ; 43:15, s. 155101-
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Journal article (peer-reviewed)abstract
- The excited electronic states of ArXe molecules in the region 77 000-80 200 cm(-1) were studied using the (2+1) and (3+1) resonance-enhanced multiphoton ionization methods. The use of different methods of multi-photon excitation and Ar+ ion registration allowed us to obtain some new data. Molecular constants were obtained for previously unknown excited states of molecules with the following dissociation limits: ArXe* -> (ArS0)-S-1+Xe*6p[5/2](3) with Omega = 2, 3 symmetry; (ArS0)-S-1+Xe*6p[3/2](2) with Omega = 1, 2 symmetry; (XeS1)-S-0 -> Xe*6s'[1/2](1)(0) with Omega = 0(+) symmetry.
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3. |
- Khodorkovskii, M. A., et al.
(author)
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Electronic spectra of XeNe molecules in the range 77100-90100 cm(-1) near Xe* (6p, 5d, 6p', 7s, 7p, 6d) obtained by the (3+1) REMPI and (2+1) REMPI methods
- 2010
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In: Optics and Spectroscopy. - 0030-400X .- 1562-6911. ; 108:6, s. 899-914
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Journal article (peer-reviewed)abstract
- The electronic spectra of XeNe molecules in the range of 77100-90100 cm(-1) are measured by the method of laser resonance multiphoton ionization in a supersonic jet. The photoionization spectra are obtained upon two- and three-photon excitations of molecules and their ionization by the next photon. In the range of 80300-90100 cm(-1) near Xe*(5d, 6p', 6d, 7s, and 7p), the spectra are obtained for the first time. A whole number of vibrational systems are measured in this range. The majority of vibrational systems near Xe* (5d, 6d, 7p, and 7s) are located in the red range with respect to their dissociation limits. In the blue range with respect to the dissociation limits, continua corresponding to transitions of molecules from the ground state to repulsive potential curves of excited states are detected. For a number of excited states of XeNe molecules, the vibrational analysis is performed and molecular constants are estimated.
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4. |
- Khodorkovskii, M. A., et al.
(author)
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Multiphoton mass spectra of Xe-2 molecules in the range of excited Xe*(6p, 5d) atoms
- 2006
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In: Optics and Spectroscopy. ; 100:4, s. 497-509
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Journal article (peer-reviewed)abstract
- The (2 + 1) photoionization mass spectra of Xe-2 molecules are studied in a supersonic jet upon excitation by laser radiation in the energy range 80321.3-77821 cm(-1), corresponding to the dissociation of the Xe-2 molecule into atoms Xe(S-1(0)) + Xe*(6p, 5d). Several vibrational progressions are observed, which are attributed to two-photon transitions of Xe-2 from the ground state to the excited states of the 0(g)(+), 1(g), and 2(g) symmetries. Based on the analysis of these progressions, the molecular constants of a number of excited states of Xe? are estimated.
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5. |
- Khodorkovskii, M. A., et al.
(author)
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Study of the lowest electronic states of Xe-2, XeKr, and XeAr molecules by the method of multiphoton resonance ionization
- 2008
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In: Optics and Spectroscopy. - 0030-400X .- 1562-6911. ; 104:5, s. 674-685
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Journal article (peer-reviewed)abstract
- The spectra of Xe-2, XeKr, and XeAr molecules in the range 66 500-68 800 cm(-1) are obtained by the methods of (2 + n) and (3 + n) (n = 1, 2, 3) resonance multiphoton ionization during the registration of molecular and atomic ions. The combining of two-and three-photon resonance excitations of Xe-2 molecules makes it possible to obtain the spectra caused by transitions from the ground state X0(g)(+) to the excited states of Xe*6s[3/2](1,2)degrees(XeS0)-S-1 molecules both of the even (0(g)(+), 1(g) ) and of the odd (B0(u)(+), B'1(u) , 2(u) ) symmetries. The data on the Omega = 2(u) state of the Xe-2 molecule with the dissociation limit Xe*6s[3/2](2)degrees + (XeS0)-S-1 and on the Omega = 1 state of the XeAr molecule with the dissociation limit Xe*6s[3/2](1)degrees (ArS0)-S-1 are obtained for the first time. The potential curve of the excited 2(u) state of the Xe*6s[3/2](2)degrees (XeS0)-S-1 molecule is repulsive and intersects the potential curve of the B0(u) + state of the Xe*6s[3/2](1)degrees (XeS0)-S-1 molecule. In the case of the three-photon excitation, it is observed that all the bands in the spectra of XeKr and XeAr molecules are broadened and are shifted, which indicates that, in an intense light field, the influence of the dynamic Stark effect is significant.
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