HeI 2 E; v E ; n E ¼ 0
ð
Þ!He þ I 2 D0
þ
u ; v D ; D
0 2 g ; v D 0 ; d2 u ; v d
À
Á
ð6:3:4Þ
EP occur. Only the Dv E = 1 VP channel is observed at all, v E = 0−17 levels.
The Dv E = 0 channels are energetically closed, and luminescence at the Dv E = 0
for each v E = 0−17 are the luminescence of the HeI 2 (E, v E , n E = 0) complexes
themselves. The probabilities of the decay channels (branching ratios, br.r.) are
estimated as the ratios of integrated partial intensity of the selected IP state
luminescence to the sum of all integrated intensities. One sees in Table 6.6 that
the probabilities of two last EP channels are low.
4. There are no dependences of br.r. E and br.r. D on v E ; br.r. E = 0.37 ± 0.08, b.
r. D = 0.60 ± 0.07. The v E = 1 and 16 levels in which the energy gap between
HeI 2 (E, v E , n E ) and the nearest lower level I 2 ðD; v
max
D ; J D ¼ 0Þ is small could be
the ‘particular points’; however, these points are not too different from the
surrounding.
Table 6.6 Branching ratios, br.r.
(1)
, of the HeI 2 (E, v E , n E ) VP and EP product formation and
maximal vibronic state ðv
max
IP Þ of the products determined by simulation of the I 2 (E ! B and
D ! X) luminescence spectra measured at the HeI 2 (E, v E , n E = 0 ← B, v B , n B ) excitation bands
E
D
D ’
d
v E
br.r.
v
max
D
DE
(2) ,
cm
−1
br.
r.
br.r.
ðD; v
max
D Þ
D; v
max
D =D; v
all
D
0
0.15
(3)
3
94
0.81
0.05
0.07
0.04
0
1
0.4
5
3.5
0.59
0.08
0.14
0.01
0
2
0.25
6
10.4
0.73
0.16
0.22
0.02
0
3
0.48
7
17.7
0.51
0.15
0.3
0.01
0
4
0.42
8
23.7
0.55
0.21
0.38
0.03
5
0.35
9
30.1
0.60
0.24
0.4
0.05
6
0.37
10
36.3
0.56
0.23
0.42
0.06
7
0.31
11
42.5
0.65
0.33
0.5
0.02
8
0.22
12
48.6
0.7
0.41
0.59
0.08
11
0.42
15
65.7
0.56
0.24
0.43
0.02
12
0.44
16
71.3
0.54
0.25
0.46
0.02
13
0.27
17
76.7
0.67
0.33
0.49
0.06
14
0.48
18
81.9
0.47
0.25
0.56
0.05
15
0.28
19
87.1
0.68
0.33
0.48
0.04
16
0.26
21
2.4
0.72
0.37
0.51
0.02
17
0.14
22
6.6
0.84
0.56
0.67
0.04
(1)—The probabilities of the decay channels (branching ratios, br.r.) are estimated as the ratios of
integrated partial intensity of the selected IP state luminescence to the sum of all integrated
intensities
(2)—Differences in the energy of the HeI 2 (E,v E ,n E = 0) and nearest low I 2 ðD; v
max
D Þ level
(3)—Luminescence of the HeI 2 (E,v E = 0,n E = 0) complex itself
220
6 Weakly-Bound Complexes and Clusters
ð
Þ!He þ I 2 D0
þ
u ; v D ; D
0 2 g ; v D 0 ; d2 u ; v d
À
Á
ð6:3:4Þ
EP occur. Only the Dv E = 1 VP channel is observed at all, v E = 0−17 levels.
The Dv E = 0 channels are energetically closed, and luminescence at the Dv E = 0
for each v E = 0−17 are the luminescence of the HeI 2 (E, v E , n E = 0) complexes
themselves. The probabilities of the decay channels (branching ratios, br.r.) are
estimated as the ratios of integrated partial intensity of the selected IP state
luminescence to the sum of all integrated intensities. One sees in Table 6.6 that
the probabilities of two last EP channels are low.
4. There are no dependences of br.r. E and br.r. D on v E ; br.r. E = 0.37 ± 0.08, b.
r. D = 0.60 ± 0.07. The v E = 1 and 16 levels in which the energy gap between
HeI 2 (E, v E , n E ) and the nearest lower level I 2 ðD; v
max
D ; J D ¼ 0Þ is small could be
the ‘particular points’; however, these points are not too different from the
surrounding.
Table 6.6 Branching ratios, br.r.
(1)
, of the HeI 2 (E, v E , n E ) VP and EP product formation and
maximal vibronic state ðv
max
IP Þ of the products determined by simulation of the I 2 (E ! B and
D ! X) luminescence spectra measured at the HeI 2 (E, v E , n E = 0 ← B, v B , n B ) excitation bands
E
D
D ’
d
v E
br.r.
v
max
D
DE
(2) ,
cm
−1
br.
r.
br.r.
ðD; v
max
D Þ
D; v
max
D =D; v
all
D
0
0.15
(3)
3
94
0.81
0.05
0.07
0.04
0
1
0.4
5
3.5
0.59
0.08
0.14
0.01
0
2
0.25
6
10.4
0.73
0.16
0.22
0.02
0
3
0.48
7
17.7
0.51
0.15
0.3
0.01
0
4
0.42
8
23.7
0.55
0.21
0.38
0.03
5
0.35
9
30.1
0.60
0.24
0.4
0.05
6
0.37
10
36.3
0.56
0.23
0.42
0.06
7
0.31
11
42.5
0.65
0.33
0.5
0.02
8
0.22
12
48.6
0.7
0.41
0.59
0.08
11
0.42
15
65.7
0.56
0.24
0.43
0.02
12
0.44
16
71.3
0.54
0.25
0.46
0.02
13
0.27
17
76.7
0.67
0.33
0.49
0.06
14
0.48
18
81.9
0.47
0.25
0.56
0.05
15
0.28
19
87.1
0.68
0.33
0.48
0.04
16
0.26
21
2.4
0.72
0.37
0.51
0.02
17
0.14
22
6.6
0.84
0.56
0.67
0.04
(1)—The probabilities of the decay channels (branching ratios, br.r.) are estimated as the ratios of
integrated partial intensity of the selected IP state luminescence to the sum of all integrated
intensities
(2)—Differences in the energy of the HeI 2 (E,v E ,n E = 0) and nearest low I 2 ðD; v
max
D Þ level
(3)—Luminescence of the HeI 2 (E,v E = 0,n E = 0) complex itself
220
6 Weakly-Bound Complexes and Clusters