52P12-52P32 fine-structure mixing in potassium atoms induced by collisions with noble gases

Berends, R. W.; Kedzierski, W.; Krause, L.

doi:10.1016/0022-4073(87)90019-7

Cited by 9 publications

(2 citation statements)

References 13 publications

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“…Unfortunately, there have been no experimental data to be compared with. In fact, some experimental results exist for the lowest n for nP states of Na [2], Κ [2,3] and Rb [4], but it seems that our model, requiring among others the average radius < r e > of the Rydberg electron orbit to be much greater than the radius p of the sphere of its interaction with a perturber, is not applicable to these cases. For the lowest n a limit of this condition is attained.…”

Section: Introductionmentioning

confidence: 93%

“…The FS mixing in higher excited states though belonging to relatively simple and at the same time rather fundamental phenomena has not been, as yet, sufficiently investigated either experimentally nor theoretically. The resonance states of alkali atoms [2] and a few of a little higher excited nP states of K (n = 5) [3], Rb (n = 6 ¸ 7) [4] and Cs (n = 7 ¸ 8) [4,5] are the exception. For higher nD excited states experimental results exist only for Rb (n = 6 ¸ 9) [6] and Cs (n = 6 ¸ 13) [7,8,9].…”

Section: Introductionmentioning

confidence: 99%

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Some Remarks and Calculations Concerning Collisional Fine Structure Mixing in Alkali Metal Atoms

Rosiński

Sirko

1991

Acta Phys. Pol. A

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The analysis of all existing theoretical and experimental results concerning collisional fine structure (FS) mixing, suggesting that their agreement depends on FS separation and FS components intensity anomaly, showed that the test of the theoretical model should be made on sodium atoms. Therefore, the mixing cross sections for the nP (n = 6 24) states of sodium atoms colliding with noble gas atoms, N2 and sodium atoms in the ground state have been calculated theoretically. Cross sections also for the lowest nP states of Na and Rb atoms have been estimated.

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Section: Introductionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Some Remarks and Calculations Concerning Collisional Fine Structure Mixing in Alkali Metal Atoms

Rosiński

Sirko

1991

Acta Phys. Pol. A

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Dynamics and Kinetics of Metal Atoms in the Gas Phase

Lin

1992

J Chinese Chemical Soc

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The review is divided into four sections. We first consider the varied behavior of K n2S and n2D states in their chemical reactivity and physical characterization. We review the effect of orbital alignment of an electronically excited metal atom on the cross section of energy transfer or chemical reaction, and report the technique of a single supersonic jet employed to measure this effect on the Ca spin‐changing collision. We discuss the effects of temperature and isotopic mass on the distribution of rotational quantum number of the product MgH to identify the reaction mechanism of Mg(1P1) + H2. The final concerns are the quantum yield, fine‐structure branching ratio and rate of collisional mixing for the K 2PJ doublets following photodissociation of KI at 193 nm.

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193 nm photodissociation of KI: Branching ratio and collisional mixing rate of K(5 2P J) doublets

Wang

Lin

Luh

1992

The Journal of Chemical Physics

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Articles you may be interested inThe 248 nm photodissociation of KI: Determination of the branching ratio of K(42 P J ) doublets in the presence of Ar, H2, and N2 J. Chem. Phys. 99, 9603 (1993); 10.1063/1.465493 Photodissociation of hydrogen chloride at 157 and 193 nm: Angular distributions of hydrogen atoms and fine structure branching ratios of chlorine atoms in the 2 P j levels J. Chem. Phys. 97, 8210 (1992); 10.1063/1.463443 Erratum: Fine structure branching ratios of the O(3 P j ) atomic fragments from photodissociation of oxygen molecules at 157 and 193 nm [J. Chem. Phys. 9 3, 2481 (1990)] J. Chem. Phys. 94, 6338 (1991); 10.1063/1.460750Fine structure branching ratios of the O(3 P j ) atomic fragments from photodissociation of oxygen molecules at 157 and 193 nm Through a three-level kinetic model, the branching ratio of the nascent photofragment K in the 5 2 P J fine-structure states following photodissociation of KI by a 193 nm excimer laser has been experimentally determined to be K(5 2P 3/2 ) = 0.791 and K(5 2P 1/2 ) = 0.209 with ± 1 % accuracy. The model has taken into account the rapid energy transfer between the 5 2P J doublets and the result appears to be more accurate than those fluorescence intensity ratio measurements under low pressure condition. The cross section of fine-structure mixing induced by H2 collisions has also been measured to be 134 ± 6 A 2 for the transition 5 2P J/2 <-5 2P I/2 and 72 ± 5 A2 for its reverse process. The ratio 1.86 is consistent with the value 1.89 predicted by principle of detailed balance. Using the Stem-Volmer equation, we have also obtained the radiative lifetime 137 ± 4 ns for the K(5 2P J ) state and its quenching cross section 10.4 ± 1.8 A? by collision with H2 molecule. The latter appears much smaller than those of fine-structure energy transfer processes by an order of magnitude.

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52P12-52P32 fine-structure mixing in potassium atoms induced by collisions with noble gases

Cited by 9 publications

References 13 publications

Some Remarks and Calculations Concerning Collisional Fine Structure Mixing in Alkali Metal Atoms

Some Remarks and Calculations Concerning Collisional Fine Structure Mixing in Alkali Metal Atoms

Dynamics and Kinetics of Metal Atoms in the Gas Phase

193 nm photodissociation of KI: Branching ratio and collisional mixing rate of K(5 2P J) doublets

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