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1

Hyperfine Structure Constants in the 10^{2}D_{3/2} and 11^{2}D_{3/2} States of ^{85}Rb

100%

Głódź M., Kraińska-Miszczak M.

Acta Physica Polonica A

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1993

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vol. 83

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issue 2

161-165

EN

The magnetic-dipole interaction constants A and the electric-quadrupole interaction constants B of two n^{2}D_{3/2} states of ^{85}Rb were measured by the quantum beat method. The results are - for n = 10: |A| = 0.393(8) MHz, |B| = 0.141(13) MHz, for n = 11: |A| = 0.283(6) MHz, |B| = 0.100(11) MHz, and positive ratio B/A for both states.

2

Lifetime and Collisional Depopulation Cross Section for the 14^{2}D_{3/2} State of Rb

81%

Bieniak B., Głódź M., Grzegorzewski P., Szonert J.

Acta Physica Polonica A

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1994

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vol. 85

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issue 5

813-818

EN

The lifetime τ and the cross section σ for depopulation induced by collisions with ground-state Rb atoms were measured for the 14^{2}D_{3/2} state of Rb. The experiment was performed in the gas-cell conditions in a range of Rb vapour temperatures in the vicinity of 340 K. The lifetime value τ = 1970(130) ns, agrees with the theoretical prediction with allowance for the influence of blackbody radiation as well as of the effects due to core polarizability and spin-orbit interaction. The measured cross section σ = 6.5(3.1) × 10^{-12} cm^{2} is close to the geometrical cross section. This agrees with similar observations made by other authors for the case of the lower n^{2}D states of Rb.

3

Spectral and Time-Resolved Studies of Green Cs_{2} Fluorescence

81%

Bieniak B., Głódź M., Jastrzębski W., Szonert J.

Acta Physica Polonica A

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1993

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vol. 84

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issue 2

229-246

EN

The origin and dynamic properties of the green fluorescence of Cs_{2} excited by laser lines in the 457-488 nm range are studied. Emphasis is placed on the analysis of the 501-527 nrn range. The identified fluorescence line progressions are attributed to the E'(3)^{1}П_{u} → X^{1}∑^{+}_{g} transition. An extension of the attractive branch of the E'(3)^{1}П_{u} potential towards longer inter-nuclear distances is reconstructed by the semi-classical method. A narrow feature at 522 nm is found to be connected with a minimum of the difference potentiał. The lifetime values are measured. The multicomponent fluorescence decays are interpreted as evidence of perturbations of the E'(3)^{1}П_{u} state by a number of bound and repulsive states of dicherent symmetry. The predissociation rates are estimated.

4

Cross Sections for l-Mixing of K(n^{2}F) States in Collisions with Ground-State K(4^{2}S) Atoms

61%

Głódź M., Huzandrov A., Klavins J., Sydoryk I., Szonert J., Gateva-Kostova S., Kowalski K.

Acta Physica Polonica A

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2000

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vol. 98

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issue 4

353-361

EN

We report measurements of the cross sections σ_{l-mix} for angular momentum mixing of the K(n^{2}F)(n=6, 7, 8) states with the K(n,l > 3) states, induced in thermal collisions with parent ground state K(4^{2}S) atoms. The experiment was performed in a cell heated to ca. 450K. The n^{2}F states were excited in two steps: 4^{2}S → 4^{2}P → n^{2F} by using a diode laser for the first step (a dipole-transition) and a pulsed dye laser for the second step (a quadrupole-transition). The measured values σ_{l-mix} (6^{2}F)=3.6+-2.2, σ_{l-mix} (7^{2}F)=4.2+-2.6 and σ_{l-mix} (8^{2}F)=8.0+-4.6 (in units of 10^{-13}cm^{-1}) are close to the corresponding values of the geometrical cross sections.

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4 Acta Physica Polonica A

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4 Głódź M.

3 Szonert J.

2 Bieniak B.

1 Gateva-Kostova S.

1 Grzegorzewski P.

1 Huzandrov A.

1 Jastrzębski W.

1 Klavins J.

1 Kowalski K.

1 Kraińska-Miszczak M.

1 Sydoryk I.

Hyperfine Structure Constants in the 10^{2}D_{3/2} and 11^{2}D_{3/2} States of ^{85}Rb

Lifetime and Collisional Depopulation Cross Section for the 14^{2}D_{3/2} State of Rb

Spectral and Time-Resolved Studies of Green Cs_{2} Fluorescence

Cross Sections for l-Mixing of K(n^{2}F) States in Collisions with Ground-State K(4^{2}S) Atoms