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σ 1s σ 2s σ 2p σ 3s σ 3p σ 3d

H + + Po(nl=1s) → H + + Po + + e-

Table 1 (Theory)

E, MeV σ 1s , 10 -16 cm 2
BE78
0.20 .1810E-15
0.30 .1656E-14
0.50 .1937E-13
0.70 .8312E-13
1.0 .3865E-12
1.5 .1985E-11
2.0 .6098E-11
3.0 .2778E-10
5.0 .1713E-09
7.0 .5121E-09
10. .1540E-08
15. .4619E-08
20. .9141E-08
30. .2060E-07
50. .4413E-07
70. .6253E-07
100. .7932E-07
150. .9040E-07
200. .9137E-07
300. .8419E-07
500. .6704E-07
700. .5459E-07
1000. .4274E-07
1500. .3146E-07
2000. .2504E-07
3000. .1792E-07
5000. .1167E-07
7000. .8718E-08

H + + Po(nl=2s) → H + + Po + + e-

Table 2 (Theory)

E, MeV σ 2s , 10 -16 cm 2
BE78
0.015 .4208E-17
0.02 .7253E-15
0.03 .2253E-13
0.05 .4558E-12
0.07 .2287E-11
0.10 .1104E-10
0.15 .5575E-10
0.20 .1629E-09
0.30 .6508E-09
0.50 .2841E-08
0.70 .5978E-08
1.0 .1017E-07
1.5 .1365E-07
2.0 .2045E-07
3.0 .8807E-07
5.0 .4775E-06
7.0 .1010E-05
10. .1729E-05
15. .2481E-05
20. .2813E-05
30. .2911E-05
50. .2555E-05
70. .2183E-05
100. .1773E-05
150. .1350E-05
200. .1097E-05
300. .8052E-06
500. .5363E-06
700. .4061E-06
1000. .3010E-06
1500. .2126E-06
2000. .1660E-06

H + + Po(nl=2p) → H + + Po + + e-

Table 3 (Theory)

E, MeV σ 2p , 10 -16 cm 2
CH73 BE78
0.01 — .1039E-20
0.015 — .3225E-17
0.02 — .1790E-15
0.03 — .5955E-14
0.05 — .1679E-12
0.07 — .1156E-11
0.10 — .7468E-11
0.15 — .5599E-10
0.20 — .2152E-09
0.30 .1987E-08 .1288E-08
0.50 .1259E-07 .9624E-08
0.70 .3498E-07 .3125E-07
1.0 .1014E-06 .9363E-07
1.5 .2882E-06 .2774E-06
2.0 .5671E-06 .5411E-06
3.0 .1247E-05 .1230E-05
5.0 .2902E-05 .2886E-05
7.0 .4551E-05 .4539E-05
10. .6635E-05 .6638E-05
15. .8978E-05 .8966E-05
20. .1007E-04 .1022E-04
30. .1101E-04 .1102E-04
50. .1028E-04 .1031E-04
70. .9052E-05 .9100E-05
100. .7466E-05 .7540E-05
150. .5658E-05 .5802E-05
200. .4539E-05 .4712E-05
300. .3286E-05 .3448E-05
500. .2176E-05 .2270E-05
700. .1677E-05 .1713E-05
1000. .1210E-05 .1260E-05
1500. — .8873E-06
2000. — .6899E-06

H + + Po(nl=3s) → H + + Po + + e-

Table 4 (Theory)

E, MeV σ 3s , 10 -16 cm 2
JO79
0.005 .6565E-11
0.007 .2305E-10
0.01 .8425E-10
0.015 .3412E-09
0.02 .8640E-09
0.03 .2799E-08
0.05 .8734E-08
0.07 .1363E-07
0.10 .1764E-07
0.15 .4781E-07
0.20 .1441E-06
0.30 .4369E-06
0.50 .7899E-06
0.70 .1434E-05
1.0 .4309E-05
1.5 .1249E-04
2.0 .2117E-04
3.0 .3433E-04
5.0 .4533E-04
7.0 .4690E-04
10. .4424E-04
15. .3801E-04
20. .3275E-04
30. .2553E-04
50. .1792E-04
70. .1388E-04
100. .1053E-04
150. .7556E-05
200. .5947E-05
300. .4226E-05
500. .2746E-05
700. .2048E-05
1000. .1510E-05
1500. .1056E-05
2000. .8184E-06

H + + Po(nl=3p) → H + + Po + + e-

Table 5 (Theory)

E, MeV σ 3p , 10 -16 cm 2
JO79
0.003 .3778E-12
0.005 .4781E-11
0.007 .2338E-10
0.01 .1197E-09
0.015 .7168E-09
0.02 .2398E-08
0.03 .1171E-07
0.05 .6552E-07
0.07 .1657E-06
0.10 .3647E-06
0.15 .7442E-06
0.20 .1212E-05
0.30 .2727E-05
0.50 .8778E-05
0.70 .1850E-04
1.0 .3727E-04
1.5 .7099E-04
2.0 .1009E-03
3.0 .1434E-03
5.0 .1799E-03
7.0 .1874E-03
10. .1799E-03
15. .1579E-03
20. .1381E-03
30. .1096E-03
50. .7831E-04
70. .6148E-04
100. .4688E-04
150. .3403E-04
200. .2696E-04
300. .1935E-04
500. .1266E-04
700. .9493E-05
1000. .6989E-05
1500. .4932E-05

H + + Po(nl=3d) → H + + Po + + e-

Table 6 (Theory)

E, MeV σ 3d , 10 -16 cm 2
JO79
0.002 .9169E-15
0.003 .1382E-13
0.005 .2726E-12
0.007 .1905E-11
0.01 .1438E-10
0.015 .1353E-09
0.02 .6388E-09
0.03 .5153E-08
0.05 .5919E-07
0.07 .2557E-06
0.10 .1035E-05
0.15 .4077E-05
0.20 .9274E-05
0.30 .2361E-04
0.50 .5587E-04
0.70 .8761E-04
1.0 .1339E-03
1.5 .2082E-03
2.0 .2738E-03
3.0 .3720E-03
5.0 .4683E-03
7.0 .4939E-03
10. .4833E-03
15. .4318E-03
20. .3804E-03
30. .3024E-03
50. .2133E-03
70. .1659E-03
100. .1252E-03
150. .8997E-04
200. .7097E-04
300. .5050E-04
500. .3260E-04
700. .2443E-04
1000. .1790E-04
1500. .1256E-04