38. Lefebvre-Brion, H., Field, R.W.: Perturbations in the Spectra of Diatomic Molecules,
Academic Press, Inc. (1986)
39. Vigué, J., Broyer, M., Lehmann, J.C.: Natural hyperfine and magnetic predissociation of the
I 2 B state. I. Theory. J. Physique 42, 937–947 (1981). https://doi.org/10.1051/jphys:
01981004207093700
40. Brown, J.M., Hougen, J.T., Huber, K.-P., Jones, J.W.C., Kopp, I., Lefebvre-Brion, H., Merer,
A.J., Ramsay, D.A., Rostas, J., Zare, R.N.: The labeling of parity doublet levels in linear
molecules. J. Molec. Spectrosc. 55, 500–503 (1975). https://doi.org/10.1016/0022-2852(75)
90291-X
41. Alexander, M.A., Corey, G.C.: Collision induce transitions between
2
P and
2
R states of
diatomic molecules: Quantum theory and collisional propensity rules. J. Chem. Phys. 84,
100–113 (1986). https://doi.org/10.1063/1.450831
42. Akopyan, M.E., Baturo, V. V, Lukashov, S.S., Mikheev, L.D., Poretsky, S.A., Pravilov, A.
M., Vasyutinskii, O.S.: Hyperfine interaction in molecular iodine between the 0
þ
g , 1 u and 0
À
u
states correlating with the I(
2
P 1/2 ) + I(
2
P 1/2 ) dissociation limit. J. Phys. B At. Mol. Opt. Phys.
48, 25102 (14pp) (2015). https://doi.org/10.1088/0953-4075/48/2/025102
43. Perrot, J.P.P., Femelat, B., Broyer, M., Chevaleyre, J.: X doubling in 1g state and electronic
transition moments for B0
þ
u towards 0
þ
g and 1 g (
3
P 2 ) states of iodine. Mol. Phys. 61, 97–108
(1987). https://doi.org/10.1080/00268978700101011
44. Ishiwata, T., Motohiro, S., Kagi, E., Fujiwara, H., Fukushima, M.: Optical-optical
double-resonance spectroscopy of the 1 u (
3
P 2 ) and 2 u (
3
P 2 ) states of I 2 through the A
3
P(1 u )
State. Bull. Chem. Soc. Jpn. 73, 2255–2261 (2000). https://doi.org/10.1246/bcsj.73.2255
45. Kagi, E., Yamamoto, N., Fujiwara, H., Fukushima, M., Ishiwata, T.: Optical–optical double
resonance spectroscopy of the 1 g (
3
P 1 )-A
3
P(1 u )-X
1 R
þ
g transition of I 2 . J. Mol. Spectrosc. 216,
48–51 (2002). https://doi.org/10.1006/jmsp.2002.8676
46. Motohiro, S., Ishiwata, T.: Optical–optical double resonance spectroscopy of the H1 u (
3
P 1 ) –
A
3
P1 u – X
1 R
þ
g transition of I 2 . J. Mol. Spectrosc. 204, 286–290 (2000). https://doi.org/10.
1006/jmsp.2000.8229
47. Motohiro, S., Umakoshi, A., Ishiwata, T.: Perturbation-facilitated optical–optical
double-resonance spectroscopy of the 1 u (
1
D) and 2 u (
1
D) ion-pair states of I 2 through the
parity mixing intermediate state. J. Mol. Spectrosc. 208, 213–218 (2001). https://doi.org/10.
1006/jmsp.2001.8379
48. Baturo, V.V., Lukashov, S.S., Poretsky, S.A., Pravilov, A.M., Vasyutinskii, O.S.: Mixing of
the D 0
þ
u and d2 u ion-pair states of iodine molecule. Chem. Phys. Lett. 638, 244–248 (2015).
https://doi.org/10.1016/j.cplett.2015.08.047
49. Levenson, M.D., Shawlou, A.L.: Hyperfine interaction in molecular iodine. Phys. Rev. A6,
10-20 (1972). https://doi.org/10.1103/PhysRevA.6.10
50. Pique, J.P., Hartmann, F., Churassy, S., Bacis, R.: Hyperfine interaction in homonuclear
diatomic molecules and u-g perturbation. I. Theory J. Physique 47, 1909–1916 (1986). https://
doi.org/10.1051/jphys:0198600470110190900
51. Jewsbury, P.J., Ridley, T., Lawley, K.P., Donovan, R.J.: Parity mixing in the valence states of
I 2 probed by optical-optical double-resonance excitation of ion-pair. J. Mol. Spectrosc. 157,
33–49 (1993). https://doi.org/10.1006/jmsp.1993.1003
52. Akopyan, M.E., Lukashov, S.S., Maslennikova, Y.D., Poretsky, S.A., Pravilov, A.M.:
Hyperfine coupling of the iodine E0
þ
g ,v E = 19 and c1 u ,v c = 18 ion-pair states. J. Phys. B At.
Mol. Opt. Phys. 40, 1173-1181 (2007). https://doi.org/10.1016/j.cplett.2015.08.047
53. Saute, M., Aubert-Frécon, M.: Calculated long-range potential-energy curves for the 23
molecular states of I 2 . J. Chem. Phys. 77, 5639–5646 (1982). https://doi.org/10.1063/1.
443770
54. Ishiwata, T., Yotsumoto, T., Motohiro, S.: Optical–optical double resonance spectroscopy of
I 2 through the parity mixed valence states. Bull. Chem. Soc. Jpn. 74, 1605–1610 (2001).
https://doi.org/10.1246/bcsj.74.1605
150
4 Photolysis of Free Molecules
Academic Press, Inc. (1986)
39. Vigué, J., Broyer, M., Lehmann, J.C.: Natural hyperfine and magnetic predissociation of the
I 2 B state. I. Theory. J. Physique 42, 937–947 (1981). https://doi.org/10.1051/jphys:
01981004207093700
40. Brown, J.M., Hougen, J.T., Huber, K.-P., Jones, J.W.C., Kopp, I., Lefebvre-Brion, H., Merer,
A.J., Ramsay, D.A., Rostas, J., Zare, R.N.: The labeling of parity doublet levels in linear
molecules. J. Molec. Spectrosc. 55, 500–503 (1975). https://doi.org/10.1016/0022-2852(75)
90291-X
41. Alexander, M.A., Corey, G.C.: Collision induce transitions between
2
P and
2
R states of
diatomic molecules: Quantum theory and collisional propensity rules. J. Chem. Phys. 84,
100–113 (1986). https://doi.org/10.1063/1.450831
42. Akopyan, M.E., Baturo, V. V, Lukashov, S.S., Mikheev, L.D., Poretsky, S.A., Pravilov, A.
M., Vasyutinskii, O.S.: Hyperfine interaction in molecular iodine between the 0
þ
g , 1 u and 0
À
u
states correlating with the I(
2
P 1/2 ) + I(
2
P 1/2 ) dissociation limit. J. Phys. B At. Mol. Opt. Phys.
48, 25102 (14pp) (2015). https://doi.org/10.1088/0953-4075/48/2/025102
43. Perrot, J.P.P., Femelat, B., Broyer, M., Chevaleyre, J.: X doubling in 1g state and electronic
transition moments for B0
þ
u towards 0
þ
g and 1 g (
3
P 2 ) states of iodine. Mol. Phys. 61, 97–108
(1987). https://doi.org/10.1080/00268978700101011
44. Ishiwata, T., Motohiro, S., Kagi, E., Fujiwara, H., Fukushima, M.: Optical-optical
double-resonance spectroscopy of the 1 u (
3
P 2 ) and 2 u (
3
P 2 ) states of I 2 through the A
3
P(1 u )
State. Bull. Chem. Soc. Jpn. 73, 2255–2261 (2000). https://doi.org/10.1246/bcsj.73.2255
45. Kagi, E., Yamamoto, N., Fujiwara, H., Fukushima, M., Ishiwata, T.: Optical–optical double
resonance spectroscopy of the 1 g (
3
P 1 )-A
3
P(1 u )-X
1 R
þ
g transition of I 2 . J. Mol. Spectrosc. 216,
48–51 (2002). https://doi.org/10.1006/jmsp.2002.8676
46. Motohiro, S., Ishiwata, T.: Optical–optical double resonance spectroscopy of the H1 u (
3
P 1 ) –
A
3
P1 u – X
1 R
þ
g transition of I 2 . J. Mol. Spectrosc. 204, 286–290 (2000). https://doi.org/10.
1006/jmsp.2000.8229
47. Motohiro, S., Umakoshi, A., Ishiwata, T.: Perturbation-facilitated optical–optical
double-resonance spectroscopy of the 1 u (
1
D) and 2 u (
1
D) ion-pair states of I 2 through the
parity mixing intermediate state. J. Mol. Spectrosc. 208, 213–218 (2001). https://doi.org/10.
1006/jmsp.2001.8379
48. Baturo, V.V., Lukashov, S.S., Poretsky, S.A., Pravilov, A.M., Vasyutinskii, O.S.: Mixing of
the D 0
þ
u and d2 u ion-pair states of iodine molecule. Chem. Phys. Lett. 638, 244–248 (2015).
https://doi.org/10.1016/j.cplett.2015.08.047
49. Levenson, M.D., Shawlou, A.L.: Hyperfine interaction in molecular iodine. Phys. Rev. A6,
10-20 (1972). https://doi.org/10.1103/PhysRevA.6.10
50. Pique, J.P., Hartmann, F., Churassy, S., Bacis, R.: Hyperfine interaction in homonuclear
diatomic molecules and u-g perturbation. I. Theory J. Physique 47, 1909–1916 (1986). https://
doi.org/10.1051/jphys:0198600470110190900
51. Jewsbury, P.J., Ridley, T., Lawley, K.P., Donovan, R.J.: Parity mixing in the valence states of
I 2 probed by optical-optical double-resonance excitation of ion-pair. J. Mol. Spectrosc. 157,
33–49 (1993). https://doi.org/10.1006/jmsp.1993.1003
52. Akopyan, M.E., Lukashov, S.S., Maslennikova, Y.D., Poretsky, S.A., Pravilov, A.M.:
Hyperfine coupling of the iodine E0
þ
g ,v E = 19 and c1 u ,v c = 18 ion-pair states. J. Phys. B At.
Mol. Opt. Phys. 40, 1173-1181 (2007). https://doi.org/10.1016/j.cplett.2015.08.047
53. Saute, M., Aubert-Frécon, M.: Calculated long-range potential-energy curves for the 23
molecular states of I 2 . J. Chem. Phys. 77, 5639–5646 (1982). https://doi.org/10.1063/1.
443770
54. Ishiwata, T., Yotsumoto, T., Motohiro, S.: Optical–optical double resonance spectroscopy of
I 2 through the parity mixed valence states. Bull. Chem. Soc. Jpn. 74, 1605–1610 (2001).
https://doi.org/10.1246/bcsj.74.1605
150
4 Photolysis of Free Molecules