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σ 1s σ 2s σ 2p

H + + As(nl=1s) → H + + As + + e-

Table 1 (Theory)

E, MeV σ 1s , 10 -16 cm 2
KH69 BE78 RHF [CL74] RHF [BU93]
0.015 — — .3237E-15 .3248E-15
0.02 — .3730E-14 .6168E-14 .6188E-14
0.03 — .4798E-13 .8817E-13 .8845E-13
0.05 — .6478E-12 .1201E-11 .1205E-11
0.07 — .3038E-11 .5508E-11 .5521E-11
0.10 — .1385E-10 .2491E-10 .2497E-10
0.15 .1052E-09 .7372E-10 .1252E-09 .1254E-09
0.20 .3029E-09 .2293E-09 .3711E-09 .3716E-09
0.30 .1390E-08 .1076E-08 .1576E-08 .1577E-08
0.50 .7210E-08 .6596E-08 .8317E-08 .8318E-08
0.70 .2262E-07 .2006E-07 .2223E-07 .2222E-07
1.0 .6214E-07 .5898E-07 .5633E-07 .5632E-07
1.5 .1835E-06 .1795E-06 .1389E-06 .1389E-06
2.0 .3675E-06 .3601E-06 .2372E-06 .2372E-06
3.0 .8479E-06 .8370E-06 .4342E-06 .4341E-06
5.0 .1915E-05 .1905E-05 .7473E-06 .7472E-06
7.0 .2833E-05 .2842E-05 .9839E-06 .9838E-06
10. .3901E-05 .3883E-05 .1306E-05 .1305E-05
15. .4874E-05 .4830E-05 .1844E-05 .1844E-05
20. .5259E-05 .5217E-05 .2335E-05 .2335E-05
30. .5269E-05 .5274E-05 .3020E-05 .3020E-05
50. .4600E-05 .4669E-05 .3472E-05 .3472E-05
70. .3954E-05 .4037E-05 .3410E-05 .3410E-05
100. .3260E-05 .3312E-05 .3101E-05 .3102E-05

H + + As(nl=2s) → H + + As + + e-

Table 2 (Theory)

E, MeV σ 2s , 10 -16 cm 2
CH73 BE78
0.002 — .8489E-12
0.003 — .1622E-10
0.005 — .2574E-09
0.007 — .1198E-08
0.01 — .5358E-08
0.015 — .2413E-07
0.02 — .6288E-07
0.03 — .2027E-06
0.05 .5972E-06 .6126E-06
0.07 .9505E-06 .9482E-06
0.10 .1204E-05 .1187E-05
0.15 .2451E-05 .2271E-05
0.20 .6403E-05 .6213E-05
0.30 .2481E-04 .2425E-04
0.50 .8296E-04 .8247E-04
0.70 .1424E-03 .1319E-03
1.0 .2148E-03 .2124E-03
1.5 .2823E-03 .2814E-03
2.0 .3150E-03 .3125E-03
3.0 .3235E-03 .3244E-03
5.0 .2887E-03 .2929E-03
7.0 .2499E-03 .2557E-03
10. .2049E-03 .2125E-03
15. .1569E-03 .1657E-03
20. .1280E-03 .1366E-03
30. .9430E-04 .1021E-03
50. .6512E-04 .6941E-04
70. .4988E-04 .5317E-04
100. .3670E-04 .4001E-04

H + + As(nl=2p) → H + + As + + e-

Table 3 (Theory)

E, MeV σ 2p , 10 -16 cm 2
CH73 BE78
0.002 — .1421E-12
0.003 — .3705E-11
0.005 — .9564E-10
0.007 — .6054E-09
0.01 — .4106E-08
0.015 — .2610E-07
0.02 — .9222E-07
0.03 — .4716E-06
0.05 .4103E-05 .2860E-05
0.07 .8721E-05 .7879E-05
0.10 .2106E-04 .2028E-04
0.15 .5204E-04 .5067E-04
0.20 .9107E-04 .8938E-04
0.30 .1823E-03 .1801E-03
0.50 .3713E-03 .3717E-03
0.70 .5426E-03 .5434E-03
1.0 .7475E-03 .7453E-03
1.5 .9585E-03 .9623E-03
2.0 .1082E-02 .1080E-02
3.0 .1164E-02 .1166E-02
5.0 .1118E-02 .1123E-02
7.0 .1019E-02 .1021E-02
10. .8745E-03 .8763E-03
15. .6951E-03 .7012E-03
20. .5765E-03 .5850E-03
30. .4318E-03 .4427E-03
50. .3019E-03 .3038E-03
70. .2330E-03 .2340E-03
100. .1727E-03 .1768E-03