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J/ApJS/232/19     H2, D2, and HD c3Πu-(v,N) levels     (Liu+, 2017)

H2X 1Σ+g - c3Πu excitation by electron impact: energies, spectra, emission yields, cross-sections, and H(1s) kinetic energy distributions. Liu X., Shemansky D.E., Yoshii J., Liu M.J., Johnson P.V., Malone C.P., Khakoo M.A. <Astrophys. J. Suppl. Ser., 232, 19-19 (2017)> =2017ApJS..232...19L
ADC_Keywords: Atomic physics Keywords: molecular data ; molecular processes Abstract: The c3Πu state of the hydrogen molecule has the second largest triplet-state excitation cross-section, and plays an important role in the heating of the upper thermospheres of outer planets by electron excitation. Precise energies of the H2, D2, and HD c3Πu-(v,N) levels are calculated from highly accurate ab initio potential energy curves that include relativistic, radiative, and empirical non-adiabatic corrections. The emission yields are determined from predissociation rates and refined radiative transition probabilities. The excitation function and excitation cross-section of the c3Πu state are extracted from previous theoretical calculations and experimental measurements. The emission cross-section is determined from the calculated emission yield and the extracted excitation cross-section. The kinetic energy (Ek) distributions of H atoms produced via the predissociation of the c3Πu state, the c3Πu--b3Σu+ dissociative emission by the magnetic dipole and electric quadrupole, and the c3Πu-a3Σg+-b3Σu+ cascade dissociative emission by the electric dipole are obtained. The predissociation of the c3Πu+ and c3Πu- states both produce H(1s) atoms with an average Ek of ∼4.1eV/atom, while the c3Πu--b3Σu+ dissociative emissions by the magnetic dipole and electric quadrupole give an average Ek of ∼1.0 and ∼0.8eV/atom, respectively. The c3Πu-a3Σg+-b3Σu+ cascade and dissociative emission gives an average Ek of ∼1.3 eV/atom. On average, each H2 excited to the c3Πu state in an H2-dominated atmosphere deposits ∼7.1eV into the atmosphere while each H2 directly excited to the a3Σg+ and d3Πu states contribute ∼2.3 and ∼3.3eV, respectively, to the atmosphere. The spectral distribution of the calculated continuum emission arising from the X1Σg+-c3Πu excitation is significantly different from that of direct a3Σg+ or d3Πu excitations. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . this file table4.dat 33 1333 Non-adiabatic transition energies and vibrational overlap integrals of the X1Σg+(vi,Ni)-c3Πu(vj,Nj) table5.dat 53 4649 Energies, transition frequencies, transition probabilities and Franck-Condon Factors of the H2 a3Σg+-c3Πu- band systems table7.dat 44 257 Predissociation rates, kinetic energy release, and FCFs of the c3Πu+(v,N) levels table8.dat 36 105 Predissociation rates of the c3Πu- (v,N,J) levels table9.dat 155 33 Calculated energies of the v=0-10 and N=1-15 levels for the H2, HD, and D2 c3Πu- state
See also: J/ApJ/818/120 : H2 d3Πu excitation by electron impact (Liu+, 2016) Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 2 I2 --- vj [0/21] The X vibrational state 4- 5 I2 --- Nj [1/17] The X rotational state 7 I1 --- vi [0] The c vibrational state 9- 10 I2 --- Ni [0/15] The c rotational state 12- 20 F9.2 cm-1 Eij [87724/118377] Transition energy 22- 33 E12.5 --- VOI [-0.5/0.5] Vibrational Overlap Integral (1)
Note (1): The rotationally dependent FCF equals to the square of vibrational overlap integral, |<vi,Ni|vj,Nj>|2.
Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
1- 2 I2 --- N1 [1/15] Upper rotational level 4- 5 I2 --- N0 [1/15] Lower rotational level 7- 8 I2 --- v1 [0/21] Upper vibrational state 10- 11 I2 --- v0 [0/20] Lower vibrational state 13- 21 F9.2 cm-1 Elow [94941/118377] Lower state energy 23- 31 F9.2 cm-1 Ea-Ec [-23233.5/23432.2] Transition frequency (1) 33- 42 E10.4 s-1 A [/94299] Transition probability (2) 44- 53 E10.4 --- FCF [/1] Franck-Condon factor (FCF=|<v1,N1|v0,N0>|2)
Note (1): The transition frequency is always defined as the energy difference between the a3Σg+ and c3Πu- states. Note (2): A is positive even when the transition frequency is negative.
Byte-by-byte Description of file: table7.dat
Bytes Format Units Label Explanations
1- 2 I2 --- v [0/21] The v vibrational state 4- 5 I2 --- N [1/15] The N rotational level 7- 15 E9.3 cm-1 Width [0.0004/3.5] Predissociation width 17- 25 E9.3 s-1 Rate Predissociation rate 27- 34 F8.5 eV Ek [7.2/10.2] Kenetic energy 36- 44 E9.3 --- FCF Franck-Condon factor in units of 1/hartree; FCF=|<c,v,N|b,Ek,N>|2
Byte-by-byte Description of file: table8.dat
Bytes Format Units Label Explanations
1 I1 --- v [0/6] The v vibrational state 3- 4 I2 --- N [1/15] The N rotational level 6- 11 F6.1 s-1 F1 [3/2447] F1 fine structure predissociation rate 13- 20 F8.1 s-1 F2 [243/270505] F2 fine structure predissociation rate 22- 27 F6.1 s-1 F3 [2/1073]? F3 fine structure predissociation rate 29- 36 F8.1 s-1 Avg Average predissociation rate (1)
Note (1): Average predissociation rate of F1, F2, and F3 fine-structure components based on (2J+1) degeneracy.
Byte-by-byte Description of file: table9.dat
Bytes Format Units Label Explanations
1- 2 A2 --- ID Calculation identifier (1) 4- 5 I2 --- v [0/10] The v vibrational state 7- 15 F9.2 cm-1 Eng-N1 [94941/113080] Calculated energy for N=1 rotational level 17- 25 F9.2 cm-1 Eng-N2 Calculated energy for N=2 rotational level 27- 35 F9.2 cm-1 Eng-N3 Calculated energy for N=3 rotational level 37- 45 F9.2 cm-1 Eng-N4 Calculated energy for N=4 rotational level 47- 55 F9.2 cm-1 Eng-N5 Calculated energy for N=5 rotational level 57- 65 F9.2 cm-1 Eng-N6 Calculated energy for N=6 rotational level 67- 75 F9.2 cm-1 Eng-N7 Calculated energy for N=7 rotational level 77- 85 F9.2 cm-1 Eng-N8 Calculated energy for N=8 rotational level 87- 95 F9.2 cm-1 Eng-N9 Calculated energy for N=9 rotational level 97-105 F9.2 cm-1 Eng-N10 Calculated energy for N=10 rotational level 107-115 F9.2 cm-1 Eng-N11 Calculated energy for N=11 rotational level 117-125 F9.2 cm-1 Eng-N12 Calculated energy for N=12 rotational level 127-135 F9.2 cm-1 Eng-N13 Calculated energy for N=13 rotational level 137-145 F9.2 cm-1 Eng-N14 Calculated energy for N=14 rotational level 147-155 F9.2 cm-1 Eng-N15 [98600/116384] Calculated energy for N=15 rotational level
Note (1): Identifier as follows: H2 = Calculated H2 triplet c-(v,N) energy with β=-0.055. HD = Calculated HD triplet c-(v,N) energy with β=-0.055. D2 = Calculated D2 triplet c-(v,N) energy with β=-0.055.
History: From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 17-Nov-2017
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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