Search results

1

Collision-Time Asymmetry and Speed-Dependent Effects on the ^{114}Cd 326.1 nm Line Perturbed by Kr

100%

Trawiński R., Bielski A., Lisak D.

Acta Physica Polonica A

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2001

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vol. 99

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issue 2

243-256

EN

Using a laser-induced fluorescence method, detailed analysis of profiles of the ^{114}Cd 326.1 nm line perturbed by krypton was performed which revealed departures from the ordinary Voigt profile. These departures are shown to be consistent with fits of experimental profiles to a speed-dependent asymmetric Voigt profile. Coefficients of the pressure broadening, shift, and collision-time asymmetry are determined and compared with those calculated in the adiabatic approximation for the van der Waals, Czuchaj-Stoll, and Morse potentials.

2

Effects of Low-Polarizability Perturbers on the Cadmium Intercombination Line

100%

Bielski A., Lisak D., Trawiński R., Szudy J.

Acta Physica Polonica A

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2003

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vol. 103

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issue 1

23-40

EN

Using a laser-induced fluorescence method a detailed analysis of profiles of the ^{114}Cd 326.1 nm line perturbed by neon and helium was performed which revealed deviations from the ordinary Voigt profile. These deviations are shown to be consistent with fits of experimental profiles to an asymmetric Voigt profile. Coefficients of the pressure broadening, shift and collision-time asymmetry are determined and compared with those calculated in the adiabatic approximation for different interaction potentials.

3

Influence of Excitation Processes on the Shape of Argon and Neon Lines

100%

Bielski A., Ciuryło R., Lisak D., Trawiński R.

Acta Physica Polonica A

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2000

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vol. 97

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issue 2

275-284

EN

Shapes of self-broadened argon lines 687.1 nm (4d_{5}-2p_{10}), 703.0 nm (3s_{5}-2p_{9}), 750.3 nm (2p_{1}-1s_{2}) as well as the neon line 748.8 nm (3d_{3}-2p_{10}) emitted from glow discharges at low pressures were analysed using a Fabry Perot interferometer. We showed that the dissociative recombination of Ar^{+}_{2} (or Ne^{+}_{2}) molecular ions which gives rise to the density of non-thermalized atoms, may be regarded as the main process responsible for the distortion of the profiles of the above lines. The distorted profiles were analysed as superposition of the Ballik profile for thermalized atoms and the modified Ballik profile for non-thermalized atoms. The Lorentzian and Gaussian widths as well as relative densities of non-thermalized and thermalized atoms were determined.

4

Temperature Effects on Dissociative Recombination in Neon

88%

Urbanowicz A., Bielski A., Lisak D., Ciuryło R., Trawiński R.

Acta Physica Polonica A

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2011

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vol. 119

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issue 3

336-341

EN

Using an interferometric method, detailed analysis of the line shapes of the self-broadened 748.8 nm Ne line emitted from the glow discharge at low pressure of neon was performed in wide temperature range. Systematic departures from the ordinary Voigt profile were observed. We have shown that the dissociative recombination of molecular Ne^{+}_2 ions which gives rise to the non-thermalized neon atoms may be regarded as the main process responsible for the distortion of the profile of the investigated line.

5

Non-Adiabatic Semiclassical Calculations of the Collision-Time Asymmetry of the ^{114}Cd 326.1 nm Line Perturbed by Noble Gases

88%

Bielski A., Ciuryło R., Lisak D., Trawiński R., Orlikowski T.

Acta Physica Polonica A

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2004

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vol. 105

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issue 3

217-232

EN

The collision-time asymmetry coefficients as well as the pressure broadening and shifting rates of the ^{114}Cd 326.1 nm line perturbed by noble gases are calculated in the framework of the non-adiabatic semi-classical method using the Czuchaj et al. potentials. The theoretical values are compared with experimental results determined recently by means of laser-induced fluorescence technique.

6

Pressure Broadening and Shift of the 326.1 nm Cd Line Perturbed by H_{2} and D_{2}

76%

Bielski A., Ciuryło R., Domysławska J., Lisak D., Trawiński R., Wolnikowski J.

Acta Physica Polonica A

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2000

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vol. 97

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issue 6

1003-1010

EN

The experimental values of pressure broadening and shift coefficients of the ^{114}Cd 326.1 nm line perturbed by H_{2} and D_{2} are determined using a LIF technique and compared with theoretical values calculated from the impact theory.

7

Observation of the Line-Mixing and Collision-Time Asymmetry of the 5^{1}S_0-5^{3}P_1 Line of the Even-Odd ^{113}Cd Isotope

76%

Bielski A., Ciuryło R., Domysławska J., Lisak D., Masłowski P., Szudy J., Trawiński R.

Acta Physica Polonica A

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2004

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vol. 105

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issue 4

329-338

EN

The profiles of argon perturbed components of the 5^{1}S_0-5^{3}P_1 line of the even-odd ^{113}Cd isotope were measured using a laser-induced fluorescence method. It was shown that the asymmetries of the profiles are due to both the collision-duration and line-mixing effects.

8

Speed-Dependent Effects on the 748.8 nm Ne Self-Broadened Line

76%

Ciuryło R., Bielski A., Brym S., Domysławska J., Lisak D., Szudy J., Trawiński R.

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vol. 96

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issue 3-4

359-372

EN

Profiles of the self-broadened 748.8 nm Ne line emitted from a glow discharge in neon in the pressure range between 0.8 and 100 Tr were measured using an improved experimental setup with pressure-scanned Fabry-Perot interferometer. First, line profiles were analysed using an ordinary Voigt procedure which yielded the Doppler widths decreasing with the increase in neon pressure. Using a speed-dependent Voigt profile it was shown that for the 748.8 nm line the correlation between the Doppler and collisional broadening plays an important role. However, the values of the pressure broadening and shift coefficients determined by the speed-dependent Voigt analysis were found to be only slightly different from those obtained by the ordinary Voigt analysis. A systematic error in the determination of perturber concentration in our previous investigation was corrected.

9

Ultra-Narrow Laser for Optical Frequency Reference

64%

Lisak D., Cygan A., Bielska K., Piwiński M., Ozimek F., Ido T., Trawiński R., Ciuryło R.

Acta Physica Polonica A

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2012

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vol. 121

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issue 3

614-621

EN

We present ultra-narrow line width, tunable diode laser system which will be used as a local oscillator in an optical atomic clock and for precision spectroscopy of Sr near 689 nm. Design of the high finesse optical cavity used as short-term frequency reference is optimized with respect to insensitivity to vibrations. We achieved laser line width of about 8 Hz, measured by comparison of two identical systems. The relative phase lock of two lasers is better than 150 mHz. Laser tunability and usefulness for precison spectroscopy were demonstrated through line shape measurement of a 20 kHz wide resonance of the optical cavity.

10

Precision spectroscopy of cold strontium atoms, towards optical atomic clock

52%

Bober M., Zachorowski J., Gawlik W., Morzyński P., Zawada M., Lisak D., Cygan A., Bielska K., Piwiński M., Trawiński R. S., Ciuryło R., Ozimek F., Radzewicz C.

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2012

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issue 4

Refine search results

Collision-Time Asymmetry and Speed-Dependent Effects on the ^{114}Cd 326.1 nm Line Perturbed by Kr

Effects of Low-Polarizability Perturbers on the Cadmium Intercombination Line

Influence of Excitation Processes on the Shape of Argon and Neon Lines

Temperature Effects on Dissociative Recombination in Neon

Non-Adiabatic Semiclassical Calculations of the Collision-Time Asymmetry of the ^{114}Cd 326.1 nm Line Perturbed by Noble Gases

Pressure Broadening and Shift of the 326.1 nm Cd Line Perturbed by H_{2} and D_{2}

Observation of the Line-Mixing and Collision-Time Asymmetry of the 5^{1}S_0-5^{3}P_1 Line of the Even-Odd ^{113}Cd Isotope

Speed-Dependent Effects on the 748.8 nm Ne Self-Broadened Line

Ultra-Narrow Laser for Optical Frequency Reference

Precision spectroscopy of cold strontium atoms, towards optical atomic clock