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σ 1s σ 2s σ 2p σ 3s σ 3p σ 3d

H + + Ac(nl=1s) → H + + Ac + + e-

Table 1 (Theory)

E, MeV σ 1s , 10 -16 cm 2
BE78
0.20 .5399E-16
0.30 .5657E-15
0.50 .7429E-14
0.70 .3306E-13
1.0 .1568E-12
1.5 .8228E-12
2.0 .2576E-11
3.0 .1199E-10
5.0 .7815E-10
7.0 .2422E-09
10. .7591E-09
15. .2416E-08
20. .5014E-08
30. .1209E-07
50. .2825E-07
70. .4210E-07
100. .5617E-07
150. .6729E-07
200. .7011E-07
300. .6697E-07
500. .5509E-07
700. .4556E-07
1000. .3603E-07
1500. .2671E-07
2000. .2133E-07
3000. .1532E-07
5000. .1001E-07
7000. .7493E-08

H + + Ac(nl=2s) → H + + Ac + + e-

Table 2 (Theory)

E, MeV σ 2s , 10 -16 cm 2
BE78
0.02 .4255E-16
0.03 .4969E-14
0.05 .1258E-12
0.07 .7289E-12
0.10 .3649E-11
0.15 .2021E-10
0.20 .6179E-10
0.30 .2647E-09
0.50 .1284E-08
0.70 .3037E-08
1.0 .6011E-08
1.5 .9192E-08
2.0 .1125E-07
3.0 .3301E-07
5.0 .2145E-06
7.0 .5306E-06
10. .1032E-05
15. .1639E-05
20. .1964E-05
30. .2150E-05
50. .1971E-05
70. .1711E-05
100. .1403E-05
150. .1079E-05
200. .8789E-06
300. .6475E-06
500. .4300E-06
700. .3267E-06
1000. .2417E-06
1500. .1714E-06
2000. .1336E-06

H + + Ac(nl=2p) → H + + Ac + + e-

Table 3 (Theory)

E, MeV σ 2p , 10 -16 cm 2
CH73 BE78
0.015 — .3686E-18
0.02 — .2814E-16
0.03 — .1470E-14
0.05 — .4981E-13
0.07 — .3719E-12
0.10 — .2484E-11
0.15 — .2015E-10
0.20 — .8030E-10
0.30 — .5045E-09
0.50 .6407E-08 .4064E-08
0.70 .1588E-07 .1400E-07
1.0 .4946E-07 .4452E-07
1.5 .1522E-06 .1421E-06
2.0 .3045E-06 .2899E-06
3.0 .7086E-06 .6946E-06
5.0 .1750E-05 .1733E-05
7.0 .2855E-05 .2839E-05
10. .4355E-05 .4343E-05
15. .6185E-05 .6170E-05
20. .7202E-05 .7279E-05
30. .8173E-05 .8200E-05
50. .7978E-05 .8036E-05
70. .7195E-05 .7260E-05
100. .6080E-05 .6133E-05
150. .4669E-05 .4792E-05
200. .3771E-05 .3918E-05
300. .2726E-05 .2882E-05
500. .1821E-05 .1907E-05
700. .1412E-05 .1439E-05
1000. .1008E-05 .1061E-05
1500. — .7480E-06
2000. — .5815E-06

H + + Ac(nl=3s) → H + + Ac + + e-

Table 4 (Theory)

E, MeV σ 3s , 10 -16 cm 2
JO79
0.005 .1911E-11
0.007 .6853E-11
0.01 .2566E-10
0.015 .1093E-09
0.02 .2902E-09
0.03 .1036E-08
0.05 .3974E-08
0.07 .7412E-08
0.10 .1080E-07
0.15 .1643E-07
0.20 .4258E-07
0.30 .1815E-06
0.50 .4616E-06
0.70 .6520E-06
1.0 .1565E-05
1.5 .5418E-05
2.0 .1052E-04
3.0 .1978E-04
5.0 .2951E-04
7.0 .3242E-04
10. .3209E-04
15. .2854E-04
20. .2503E-04
30. .1986E-04
50. .1419E-04
70. .1100E-04
100. .8398E-05
150. .6031E-05
200. .4743E-05
300. .3377E-05
500. .2213E-05
700. .1640E-05
1000. .1204E-05
1500. .8421E-06
2000. .6542E-06

H + + Ac(nl=3p) → H + + Ac + + e-

Table 5 (Theory)

E, MeV σ 3p , 10 -16 cm 2
JO79
0.003 .1025E-12
0.005 .1309E-11
0.007 .6486E-11
0.01 .3422E-10
0.015 .2139E-09
0.02 .7435E-09
0.03 .3902E-08
0.05 .2491E-07
0.07 .6993E-07
0.10 .1727E-06
0.15 .3843E-06
0.20 .6231E-06
0.30 .1316E-05
0.50 .4078E-05
0.70 .8807E-05
1.0 .1880E-04
1.5 .3889E-04
2.0 .5859E-04
3.0 .8958E-04
5.0 .1216E-03
7.0 .1323E-03
10. .1320E-03
15. .1197E-03
20. .1064E-03
30. .8612E-04
50. .6209E-04
70. .4894E-04
100. .3751E-04
150. .2727E-04
200. .2164E-04
300. .1564E-04
500. .1024E-04
700. .7649E-05
1000. .5625E-05
1500. .3977E-05
2000. .3089E-05

H + + Ac(nl=3d) → H + + Ac + + e-

Table 6 (Theory)

E, MeV σ 3d , 10 -16 cm 2
JO79
0.003 .2846E-14
0.005 .5652E-13
0.007 .4005E-12
0.01 .3068E-11
0.015 .3011E-10
0.02 .1453E-09
0.03 .1259E-08
0.05 .1582E-07
0.07 .7376E-07
0.10 .3303E-06
0.15 .1475E-05
0.20 .3683E-05
0.30 .1085E-04
0.50 .2847E-04
0.70 .4787E-04
1.0 .7511E-04
1.5 .1195E-03
2.0 .1613E-03
3.0 .2296E-03
5.0 .3079E-03
7.0 .3387E-03
10. .3445E-03
15. .3187E-03
20. .2860E-03
30. .2325E-03
50. .1659E-03
70. .1297E-03
100. .9803E-04
150. .7047E-04
200. .5550E-04
300. .3985E-04
500. .2555E-04
700. .1907E-04
1000. .1398E-04
1500. .9809E-05
2000. .7594E-05