Françoise Michaud,1
Françoise Roux,1
Sumner P. Davis,2
and An-Dien Nguyen2
1Laboratoire de Spectrométrie Ionique et Moléculaire, Université Claude Bernard Lyon I, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne Cedex, France;
2Department of Physics, University of California, Berkeley, California 94720. USA
A new perturbation analysis of the first negative system B2∑u+ → X2∑g+ of the 14N2+ ion is performed based on spectra excited both at low and high temperatures by the use of either a hollow-cathode or a Pointolite lamp. Preliminary results are given for a deperturbation of the B2∑u+ (v = 0, v = 1) levels. Deperturbed molecular constants and parameters that describe the B2∑u+ ~ A2Πu interaction are derived.
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Jc′ is the value for which the B2∑+ and A2Π levels would be degenerate in the absence of any interaction.
Indicates the largest shift in energy levels (N′) produced by the 2∑−2Π interaction at each crossing point.
Table 2
B2∑ (v = 1) ~ A2Π (v = 11, v = 12, v = 13) Perturbations
Jc′ is the value for which the B2∑+ and A2Π levels would be degenerate in the absence of any interaction.
Indicates the largest shift in energy levels (N′) produced by the 2∑−2Π interaction at each crossing point.
Table 3
Molecular Parameters of the B2∑u+ State of 14N2+ (cm−1)a
Values in parentheses are the uncertainties in the last digits that correspond to two standard deviations.
The origin of T is the energy of the X2∑ (v = 0, J = 1/2) F1 level.
γ″ (X2∑+) fixed values (see Table 5).
Distorsion parameters: αeJ = − 0.90 × 10−3 (4) cm−1, βeJ = 0.217 × 10−4 (4). The results are from simultaneous fits of the 0–0, 0–1, 0–2, 1–0, 1–1, 1–2, 1–3, and 1–4 bands (rms ~ 0.009 cm−1). The band origins (in inverse centimeters) are ν0 (0–0) = 25,566.058, ν0 (0–1) = 23,391.310, ν0 (0–2) = 21,249.068, ν0 (1–0) = 27,937.684, ν0 (1–1) = 25,762.936, ν0 (1–2) = 23,620.700, ν0 (1–3) = 25,511.230, ν0 (1–4) = 19,434.782.
Table 4
Equilibrium Molecular Constants of the A2Πu state of 14N2+ (cm−1)a
Values in parentheses are the uncertainties in the last digits that correspond to two standard deviations. Values in square brackets are fixed parameters.
The origin of T is the energy of the X2∑ (v = 0, J = 1/2) F1 level.
Taken from Ref. 19.
Calculated by fitting a first-degree polynomial to A and D values of high vibrational levels v = 8 → 13 (data from Refs. 12–17). Aj are fixed to 2.4 × 10−5 (fitted value from the data of Refs. 12–17). Aj j are set equal to zero. H are fixed to −3.45 × 10−12 (calculated values of Ref. 3).
Table 5
Molecular Parameters of the X2∑g+ state of 14N2+ (cm−1)a
Values in parentheses are the uncertainties in the last digits that correspond to two standard deviations. T fixed values.19 The origin of T is the energy of the X2∑ (v = 0, J = 1/2) F1 level.
γ fixed values.11–20H are set equal to zero.
Jc′ is the value for which the B2∑+ and A2Π levels would be degenerate in the absence of any interaction.
Indicates the largest shift in energy levels (N′) produced by the 2∑−2Π interaction at each crossing point.
Table 2
B2∑ (v = 1) ~ A2Π (v = 11, v = 12, v = 13) Perturbations
Jc′ is the value for which the B2∑+ and A2Π levels would be degenerate in the absence of any interaction.
Indicates the largest shift in energy levels (N′) produced by the 2∑−2Π interaction at each crossing point.
Table 3
Molecular Parameters of the B2∑u+ State of 14N2+ (cm−1)a
Values in parentheses are the uncertainties in the last digits that correspond to two standard deviations.
The origin of T is the energy of the X2∑ (v = 0, J = 1/2) F1 level.
γ″ (X2∑+) fixed values (see Table 5).
Distorsion parameters: αeJ = − 0.90 × 10−3 (4) cm−1, βeJ = 0.217 × 10−4 (4). The results are from simultaneous fits of the 0–0, 0–1, 0–2, 1–0, 1–1, 1–2, 1–3, and 1–4 bands (rms ~ 0.009 cm−1). The band origins (in inverse centimeters) are ν0 (0–0) = 25,566.058, ν0 (0–1) = 23,391.310, ν0 (0–2) = 21,249.068, ν0 (1–0) = 27,937.684, ν0 (1–1) = 25,762.936, ν0 (1–2) = 23,620.700, ν0 (1–3) = 25,511.230, ν0 (1–4) = 19,434.782.
Table 4
Equilibrium Molecular Constants of the A2Πu state of 14N2+ (cm−1)a
Values in parentheses are the uncertainties in the last digits that correspond to two standard deviations. Values in square brackets are fixed parameters.
The origin of T is the energy of the X2∑ (v = 0, J = 1/2) F1 level.
Taken from Ref. 19.
Calculated by fitting a first-degree polynomial to A and D values of high vibrational levels v = 8 → 13 (data from Refs. 12–17). Aj are fixed to 2.4 × 10−5 (fitted value from the data of Refs. 12–17). Aj j are set equal to zero. H are fixed to −3.45 × 10−12 (calculated values of Ref. 3).
Table 5
Molecular Parameters of the X2∑g+ state of 14N2+ (cm−1)a
Values in parentheses are the uncertainties in the last digits that correspond to two standard deviations. T fixed values.19 The origin of T is the energy of the X2∑ (v = 0, J = 1/2) F1 level.
γ fixed values.11–20H are set equal to zero.
Add to BibSonomy