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σ 1s σ 2s σ 2p σ 3s σ 3p σ 3d

H + + Ta(nl=1s) → H + + Ta + + e-

Table 1 (Theory)

E, MeV σ 1s , 10 -16 cm 2
KH69 BE78
0.15 — .4692E-15
0.20 — .2330E-14
0.30 — .1756E-13
0.50 — .1720E-12
0.70 .1029E-11 .7177E-12
1.0 .4114E-11 .2968E-11
1.5 .1967E-10 .1460E-10
2.0 .4776E-10 .4304E-10
3.0 .2246E-09 .1859E-09
5.0 .1063E-08 .1010E-08
7.0 .2879E-08 .2801E-08
10. .7555E-08 .7336E-08
15. .1973E-07 .1913E-07
20. .3417E-07 .3398E-07
30. .6497E-07 .6540E-07
50. .1160E-06 .1161E-06
70. .1467E-06 .1465E-06
100. .1679E-06 .1678E-06
150. .1717E-06 .1717E-06
200. .1630E-06 .1630E-06
300. .1406E-06 .1400E-06
500. .1070E-06 .1051E-06
700. .8355E-07 .8378E-07
1000. .6433E-07 .6423E-07
1500. — .4683E-07
2000. — .3708E-07
3000. — .2651E-07
5000. — .1717E-07
7000. — .1287E-07

H + + Ta(nl=2s) → H + + Ta + + e-

Table 2 (Theory)

E, MeV σ 2s , 10 -16 cm 2
CH73 BE78
0.01 — .2749E-16
0.015 — .4863E-14
0.02 — .4787E-13
0.03 — .5397E-12
0.05 — .7014E-11
0.07 — .2966E-10
0.10 — .1258E-09
0.15 — .5490E-09
0.20 — .1423E-08
0.30 .5663E-08 .4594E-08
0.50 .1440E-07 .1400E-07
0.70 .2147E-07 .2159E-07
1.0 .2877E-07 .2737E-07
1.5 .7617E-07 .6140E-07
2.0 .1991E-06 .1829E-06
3.0 .7550E-06 .7115E-06
5.0 .2270E-05 .2251E-05
7.0 .3678E-05 .3622E-05
10. .5010E-05 .4953E-05
15. .5815E-05 .5883E-05
20. .6006E-05 .6034E-05
30. .5533E-05 .5623E-05
50. .4400E-05 .4536E-05
70. .3573E-05 .3738E-05
100. .2782E-05 .2964E-05
150. .2042E-05 .2218E-05
200. .1623E-05 .1785E-05
300. .1205E-05 .1297E-05
500. .8027E-06 .8596E-06
700. .5910E-06 .6483E-06
1000. — .4804E-06
1500. — .3391E-06
2000. — .2645E-06

H + + Ta(nl=2p) → H + + Ta + + e-

Table 3 (Theory)

E, MeV σ 2p , 10 -16 cm 2
CH73 BE78
0.01 — .3045E-17
0.015 — .7812E-15
0.02 — .8570E-14
0.03 — .1362E-12
0.05 — .2621E-11
0.07 — .1597E-10
0.10 — .9524E-10
0.15 — .6292E-09
0.20 — .2200E-08
0.30 .1911E-07 .1124E-07
0.50 .7727E-07 .6807E-07
0.70 .2086E-06 .1914E-06
1.0 .5267E-06 .4959E-06
1.5 .1307E-05 .1255E-05
2.0 .2266E-05 .2224E-05
3.0 .4535E-05 .4483E-05
5.0 .9127E-05 .9094E-05
7.0 .1302E-04 .1293E-04
10. .1702E-04 .1697E-04
15. .2018E-04 .2042E-04
20. .2156E-04 .2161E-04
30. .2108E-04 .2126E-04
50. .1801E-04 .1818E-04
70. .1513E-04 .1537E-04
100. .1200E-04 .1235E-04
150. .8859E-05 .9303E-05
200. .7042E-05 .7489E-05
300. .5216E-05 .5436E-05
500. .3461E-05 .3568E-05
700. .2539E-05 .2691E-05
1000. — .1984E-05
1500. — .1400E-05
2000. — .1090E-05

H + + Ta(nl=3s) → H + + Ta + + e-

Table 4 (Theory)

E, MeV σ 3s , 10 -16 cm 2
JO79
0.003 .1478E-10
0.005 .9770E-10
0.007 .3240E-09
0.01 .1077E-08
0.015 .3735E-08
0.02 .8074E-08
0.03 .1899E-07
0.05 .3318E-07
0.07 .4743E-07
0.10 .1574E-06
0.15 .6190E-06
0.20 .1119E-05
0.30 .1686E-05
0.50 .4809E-05
0.70 .1340E-04
1.0 .3105E-04
1.5 .5913E-04
2.0 .7928E-04
3.0 .1001E-03
5.0 .1068E-03
7.0 .1005E-03
10. .8837E-04
15. .7188E-04
20. .6041E-04
30. .4613E-04
50. .3181E-04
70. .2447E-04
100. .1837E-04
150. .1317E-04
200. .1037E-04
300. .7395E-05
500. .4773E-05
700. .3569E-05
1000. .2623E-05
1500. .1840E-05
2000. .1428E-05

H + + Ta(nl=3p) → H + + Ta + + e-

Table 5 (Theory)

E, MeV σ 3p , 10 -16 cm 2
JO79
0.002 .1351E-11
0.003 .9378E-11
0.005 .1027E-09
0.007 .4740E-09
0.01 .2228E-08
0.015 .1167E-07
0.02 .3448E-07
0.03 .1330E-06
0.05 .5141E-06
0.07 .1008E-05
0.10 .1832E-05
0.15 .3797E-05
0.20 .6905E-05
0.30 .1733E-04
0.50 .5211E-04
0.70 .9675E-04
1.0 .1648E-03
1.5 .2574E-03
2.0 .3226E-03
3.0 .3908E-03
5.0 .4212E-03
7.0 .4041E-03
10. .3629E-03
15. .3030E-03
20. .2574E-03
30. .2005E-03
50. .1407E-03
70. .1094E-03
100. .8311E-04
150. .6065E-04
200. .4794E-04
300. .3439E-04
500. .2234E-04
700. .1679E-04
1000. .1239E-04

H + + Ta(nl=3d) → H + + Ta + + e-

Table 6 (Theory)

E, MeV σ 3d , 10 -16 cm 2
JO79
0.002 .5266E-13
0.003 .5564E-12
0.005 .1047E-10
0.007 .6953E-10
0.01 .4914E-09
0.015 .4248E-08
0.02 .1800E-07
0.03 .1226E-06
0.05 .1083E-05
0.07 .3773E-05
0.10 .1185E-04
0.15 .3464E-04
0.20 .6266E-04
0.30 .1215E-03
0.50 .2383E-03
0.70 .3511E-03
1.0 .5116E-03
1.5 .7337E-03
2.0 .8904E-03
3.0 .1081E-02
5.0 .1173E-02
7.0 .1135E-02
10. .1024E-02
15. .8528E-03
20. .7207E-03
30. .5503E-03
50. .3780E-03
70. .2902E-03
100. .2177E-03
150. .1575E-03
200. .1229E-03
300. .8705E-04
500. .5631E-04
700. .4222E-04