scholarly journals Effect of vibrational quantum number on stereodynamics of reaction O+HCl→OH+Cl

2010 ◽  
Vol 59 (11) ◽  
pp. 7808
Author(s):  
Xu Xue-Song ◽  
Zhang Wen-Qin ◽  
Jin Kun ◽  
Yin Shu-Hui
Keyword(s):  
Quantum Number ◽  
Vibrational Quantum Number

The D and D′ states of the PO molecule

1968 ◽  
Vol 46 (18) ◽  
pp. 2079-2086 ◽  
Author(s):  
R. D. Verma ◽  
M. N. Dixit
Keyword(s):  
Quantum Number ◽  
Isotopic Shift ◽  
Rotational Analysis ◽  
Vibrational Quantum Number

A rotational analysis of the 0–0, 0–1, and 0–2 bands of the D–B and D′–B systems of PO in the region 5500–6900 Å has been carried out from a spectrum obtained at a resolution higher than that of previous workers (Couet and Guenebaut 1966; Couet et al. 1967). The mutual perturbation between D2Πr and D′2Πr has been confirmed from the rotational analysis of the 0–0 and 0–1 bands of the D–A and D′–X systems in the region 2000–2200 Å. The analysis of the D′–X bands has shown that the previously reported E′ state lying between the D and D′ states is actually part of the D′ state. The constants of the D2Πr, D′ 2Πr, B2Σ+, and X2Π states are evaluated and compared with the constants of earlier workers to remove the inconsistency existing in their values for the B and X states.The isotopic bands corresponding to P18O of the D–B and D′–B systems are obtained, thus showing that the D′ state has an anomalous isotopic shift and that the observed levels of the D and D′ states have the vibrational quantum number ν =.

scholarly journals Structure in the secondary hydrogen spectrum—Part V

1926 ◽  
Vol 113 (764) ◽  
pp. 368-419 ◽  
Keyword(s):  
Quantum Number ◽  
Vibrational State ◽  
Final States ◽  
Vibrational Quantum Number ◽  
Vibrational States ◽  
Rydberg Constant ◽  
Infra Red ◽  
Preliminary Account ◽  
Before And After ◽  
State Of Affairs

In a previous paper entitled “Structure in the Secondary Hydrogen Spectrum,” Part IV, it was shown that there were a number of bands associated with Fulcher’s bands. It now appears that these and other related bands form a set of band systems whose null lines are connected by a Rydberg-Ritz formula. This formula has the normal value of the Rydberg constant, as is the case with the formula found by Fowler to connect the heads of some of the helium bands. This discovery makes it possible to apportion the effects observed as between electron jumps and vibration jumps, a matter which had to be left open in the previous paper (p. 740). The present paper deals only with the Q branches which are the most strongly developed and have been investigated most fully. A preliminary account of some of the results has been published a letter to ‘Nature,’ but the numbering of the vibrational states of the H α bands proposed therein has since been abandoned. It will be shown that all the lines of Fulcher’s red bands arise as a result of transitions in which the total quantum number (electron jump) changes from 3 to 2 and the vibrational quantum number is unchanged. In the part of the band denoted by A in “Structure,” Part IV, the vibrational state has the lowest possible quantum number both before and after the transition. I shall indicate this state of affairs by the symbol 0 → 0. The corresponding vibrational states in the parts denoted by B, C, D, E and F are, both initially and finally, 1, 2, 3, 4 and 5, and I shall denote these transitions by 1 →1, 2 → 2 , 3 → 3 , 4 → 4 and 5 → 5 respectively. The different lines in part A all have the same electron jump (3 → 2) and the same vibration state (0 → 0) but have different rotational jumps either of the molecule as a whole or of the emitting electron or of both. This statement will be equally true if the letter A is replaced by any of the letters B, C, D, E or F, except that the vibrational jump 0 0 is replaced by 1 → 1, 2 → 2, etc. In the present paper I shall confine my attention to the Q branches so that all the rotational transitions here dealt with are of the type m + ½ → m + ½ , m = 1, 2, 3, 4, 5, etc. (see Part IV, p. 749). Fulcher’s green bands also have the same electron jumps (3 → 2), but in these bands the vibrational quantum number is higher by unity in the initial than in the final states. Thus for the various green bands denoted by the letters A, B, C, D, E and F the vibrational transitions are 1 → 0, 2 → 1, 3 → 2, 4 → 3, 5 → 4 and 6 → 5 respectively. In addition to these, bands with the same electron jump (3 → 2) can be found in the infra-red with the vibrational jumps 0 → 1, 1 → 2, 2 → 3, 3 → 4 and 4 → 5 and others on the side of the green towards the violet which correspond to the vibration jumps 2 → 0, 3 → 1, 4 → 2, 5 → 3 and 6 → 4, and a few lines which may correspond to the vibration jumps 3 → 0 and 5 → 2. All these lines have the electron jump 3 → 2 and are the band analogue of the single line H α in the line spectrum of the hydrogen atom. For this reason it is convenient to refer to this system of bands as the H α bands.

Influence of the vibrational quantum number of the resonant state in resonant multiphoton ionization/dissociation of hydrogen molecules

1986 ◽  
Vol 125 (1) ◽  
pp. 27-32 ◽  
Author(s):  
J.H.M. Bonnie ◽  
P.J. Eenshuistra ◽  
J. Los ◽  
H.J. Hopman
Keyword(s):  
Quantum Number ◽  
Resonant State ◽  
Multiphoton Ionization ◽  
Vibrational Quantum Number ◽  
Hydrogen Molecules

Stereodynamics of the reaction He+H2+ → HeH+ + H: a theoretical study

Open Physics ◽  
2011 ◽  
Vol 9 (5) ◽  
Author(s):  
Tianyun Chen ◽  
Ningjiu Zhao ◽  
Weiping Zhang ◽  
Xinqiang Wang
Keyword(s):  
Quantum Number ◽  
Cross Sections ◽  
Collision Energy ◽  
Energy Surface ◽  
Theoretical Study ◽  
Chem Phys ◽  
Vibrational Quantum Number ◽  
Title Reaction ◽  
Highly Sensitive ◽  
Trajectory Method

AbstractQuasiclassical trajectory method for the title reaction He +H2+ → HeH+ + H was carried out on the potential energy surface which was revised by Aquilanti et al. [Chem. Phys. Lett. 469, 26 (2009)]. The initial vibrational quantum number of reactant was set as v=1, v=2 and v=3. Stereodynamics information of the reaction was obtained, such as the distributions of product angular momentum P(θ r), P(ϕ r),p(ϕ r, θ r) and the two commonly used polarization-dependent differential cross sections (PDDCSs) (2π/σ)(dσ 00/dω t) and (2π/σ)(dσ 20/dω t), to get the alignment and orientation of product molecules. The results show that the influence of both the collision energy and vibrational quantum number (v) to the reaction are highly sensitive.

scholarly journals The absorption band spectrum of chlorine—II

1930 ◽  
Vol 127 (806) ◽  
pp. 638-657 ◽  
Keyword(s):  
Absorption Band ◽  
Quantum Number ◽  
Band Spectrum ◽  
Vibrational Quantum Number ◽  
Absorption Bands ◽  
Electronic Level ◽  
Intensity Measurements ◽  
Quantum Numbers ◽  
The Subject ◽  
The Absolute

As the results of measurements and analysis of the absorption bands of chlorine, communicated in a previous paper, seemed to justify further work on the same problem, particularly with regard to intensity measurements, these bands have been further investigated and the results form the subject of this paper. In the publication referred to, the analysis of three bands due to Cl 35 CI 35 was described, and the discovery of the corresponding isotope band CI 35 CI 37 in the case of one of them enabled the absolute numbering for the vibrational quantum number in the upper electronic level to be determined, if one assumed that the vibrational quantum numbers for the lower level were known.

scholarly journals Determination and Study the Energy Characteristics of Vibrational-Rotational Levels and Spectral Lines of GaF, GaCl, GaBr and GaI for Ground State

2015 ◽  
Vol 50 ◽  
pp. 96-112
Author(s):  
Adil Nameh Ayaash
Keyword(s):  
Quantum Number ◽  
Computer Model ◽  
Ground State ◽  
Theoretical Study ◽  
Rotational Quantum Number ◽  
Spectral Lines ◽  
Vibrational Quantum Number ◽  
Energy Characteristics ◽  
Number Increase ◽  
The Relationship

A theoretical study of four gallium monohalides molecules (GaF, GaCl, GaBr and GaI) of ground state 1∑+ by using computer model is presented to study the energy characteristics of vibrational-rotational levels as a function of the vibrational and rotational quantum number , respectively. The calculations has been performed to examine the vibrational-rotational characteristics of some gallium halides molecules. These calculations appeared that all energies (Gv, Ev,J, and Fv,J) increase with increasing vibrational and rotational quantum number and by increasing the vibrational quantum number, and by increasing the vibrational quantum number, the vibrational constant will decrease. Also theoretical study of spectra of these molecules for ground state 1∑+ has been carried out. The values of spectral lines R(J) and P(J) were calculated and the relationship between the spectral lines and the rotational quantum number was established. The results appeared the spectra line values R(J) increases when the values of rotational quantum number decrease but the spectra line values P(J) decrease when the values of rotational quantum number increase, also the spectra line values P(J) decrease when the values of (m) increase, while the values of R(J) increase at first, then decrease showing Fortrar parabola.

THE NEAR ULTRAVIOLET BANDS OF N2+ AND THE DISSOCIATION ENERGIES OF THE N2+ AND N2 MOLECULES

1952 ◽  
Vol 30 (4) ◽  
pp. 302-313 ◽  
Author(s):  
A. E. Douglas
Keyword(s):  
Quantum Number ◽  
Dissociation Energy ◽  
Ground State ◽  
Strong Support ◽  
Dissociation Limit ◽  
Vibrational Quantum Number ◽  
Ultraviolet Emission ◽  
Dissociation Energies ◽  
Near Ultraviolet

The ultraviolet emission bands of N2+ have been photographed using a six meter grating, and a number of new bands of high vibrational quantum number have been found. It has been possible to show that the [Formula: see text] state dissociates at a limit 70,358 cm.−1 above the ground state. It is shown that these results give strong support to the value 9.75 electron volts for the dissociation energy of nitrogen, but the lower value of 7.37 electron volts cannot be eliminated with certainty. The peculiar manner in which the B2Σ state converges to its dissociation limit is interpreted as being caused by an interaction between the [Formula: see text] and the [Formula: see text] states.

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