NI Total Ionization Cross-Section

Table of Ionization Cross Sections at Specific Energies (tab-delimited ASCII)

Atomic Orbital Constants for BEB Calculation of the Direct Cross Section

Total Ionization Cross Section
Incident electron energy, T = eV

I - Total (⁴S) IV - Total (²D) VII - Total (²P) VIII - Total From Mix	Y.-K. Kim and J.-P. Desclaux, Phys. Rev. A 66, 012708 (2002). (T)
IX - brook78, 2 keV	E. Brook, M.F.A. Harrison, and A.C.H. Smith, J. Phys. B 11, 3115 (1978). (E)
X - brook78, 4 keV	E. Brook, M.F.A. Harrison, and A.C.H. Smith, J. Phys. B 11, 3115 (1978). (E)

All cross sections are in 10^-16 cm² unless otherwise specified.

I II III IV V VI VII VIII IX X
T
(eV) Total (⁴S)
BEB Direct
From ²D
Exc-Ion.
From ²D
Total (²D)
BEB Direct
From ²P
Exc-Ion.
BEB Direct
From ²P
Total (²P)
Total From Mix
30% ²D, 70% gnd. state
brook78, 2 keV brook78, 4 keV
10.96 0.00000 0.00000 0.00000
12.00 0.00335 0.11996 0.12331 0.00700
12.15 0.00002 0.00002 0.00412 0.13510 0.13923 0.00000
13.00 0.02233 0.12019 0.14252 0.01029 0.20132 0.21161 0.04276 0.05400
14.00 0.04989 0.22421 0.27410 0.02634 0.27348 0.29982 0.08223 0.11300
14.53 0.07073 0.25874 0.32947 0.03703 0.31088 0.34791 0.09884
15.00 0.01099 0.10666 0.28334 0.39000 0.04689 0.34249 0.38938 0.12470 0.12200
16.00 0.04150 0.16704 0.32490 0.49194 0.07065 0.41071 0.48135 0.17663 0.24800
16.43 0.05707 0.19631 0.33949 0.53581 0.08214 0.44105 0.52319 0.20069
17.00 0.08317 0.23533 0.35628 0.59161 0.09650 0.47823 0.57473 0.23570 0.23200
18.00 0.13245 0.30285 0.38087 0.68372 0.12124 0.54004 0.66128 0.29783 0.28000
18.59 0.16218 0.34196 0.39294 0.73490 0.13596 0.57545 0.71141 0.33400
19.00 0.18354 0.36905 0.40057 0.76963 0.14590 0.59906 0.74495 0.35936
20.00 0.23477 0.43259 0.41660 0.84918 0.16915 0.65325 0.82241 0.41909 0.37200
22.00 0.33289 0.55019 0.44061 0.99080 0.21206 0.74993 0.96199 0.53027 0.56800
24.00 0.42275 0.65500 0.45707 1.11207 0.25017 0.83279 1.08296 0.62955 0.60800
25.00 0.46439 0.70282 0.46325 1.16606 0.26753 0.86966 1.13719 0.67489
27.00 0.54723 0.79349 0.47251 1.26600 0.29910 0.93543 1.23453 0.76286 0.79900
28.00 0.58851 0.83822 0.47589 1.31411 0.31432 0.96649 1.28082 0.80619
30.00 0.66918 0.92511 0.48071 1.40582 0.34400 1.02605 1.37005 0.89017
32.00 0.74360 1.00465 0.48347 1.48812 0.37165 1.08049 1.45215 0.96695 0.94500
34.00 0.81133 1.07649 0.48465 1.56114 0.39672 1.12896 1.52567 1.03628
35.00 0.84282 1.10967 0.48476 1.59443 0.40828 1.15102 1.55930 1.06830
37.00 0.90132 1.17093 0.48422 1.65515 0.42961 1.19120 1.62081 1.12747 1.15700 1.11700
38.00 0.92845 1.19917 0.48362 1.68280 0.43943 1.20946 1.64890 1.15476
40.00 0.97880 1.25126 0.48189 1.73315 0.45753 1.24265 1.70018 1.20511
42.00 1.02432 1.29796 0.47957 1.77753 0.47372 1.27180 1.74553 1.25028
44.00 1.06545 1.33981 0.47679 1.81660 0.48821 1.29736 1.78557 1.29079
45.00 1.08449 1.35907 0.47525 1.83432 0.49486 1.30892 1.80378 1.30944
47.00 1.11979 1.39452 0.47196 1.86647 0.50708 1.32980 1.83689 1.34379 1.34100
48.00 1.13613 1.41081 0.47021 1.88102 0.51269 1.33922 1.85191 1.35960
50.00 1.16640 1.44078 0.46656 1.90734 0.52299 1.35617 1.87915 1.38868
55.00 1.22969 1.50234 0.45677 1.95911 0.54401 1.38907 1.93308 1.44852
57.00 1.25072 1.52236 0.45269 1.97505 0.55080 1.39902 1.94982 1.46802
60.00 1.27836 1.54821 0.44647 1.99469 0.55951 1.41107 1.97058 1.49325
65.00 1.31544 1.58180 0.43602 2.01782 0.57070 1.42472 1.99542 1.52616
67.00 1.32758 1.59240 0.43185 2.02425 0.57418 1.42828 2.00246 1.53658 1.51300
70.00 1.34330 1.60570 0.42563 2.03133 0.57849 1.43192 2.01040 1.54971
75.00 1.36376 1.62190 0.41542 2.03732 0.58359 1.43411 2.01770 1.56583
77.00 1.37021 1.62658 0.41142 2.03800 0.58501 1.43384 2.01884 1.57054 1.59000
80.00 1.37825 1.63195 0.40549 2.03744 0.58655 1.43240 2.01895 1.57601
85.00 1.38790 1.63707 0.39588 2.03295 0.58780 1.42764 2.01544 1.58142
87.00 1.39061 1.63796 0.39213 2.03009 0.58789 1.42504 2.01294 1.58245 1.60800
90.00 1.39361 1.63821 0.38661 2.02482 0.58767 1.42051 2.00818 1.58297
95.00 1.39608 1.63615 0.37769 2.01384 0.58644 1.41152 1.99795 1.58141
97.00 1.39631 1.63457 0.37422 2.00878 0.58568 1.40750 1.99318 1.58005 1.58600
100.00 1.39592 1.63149 0.36912 2.00061 0.58432 1.40108 1.98540 1.57733
110.00 1.38947 1.61629 0.35300 1.96929 0.57807 1.37711 1.95519 1.56341
120.00 1.37710 1.59556 0.33817 1.93373 0.56997 1.35054 1.92051 1.54409
130.00 1.36075 1.57129 0.32453 1.89582 0.56070 1.32260 1.88330 1.52127
147.00 1.32743 1.52553 0.30373 1.82926 0.54353 1.27412 1.81765 1.47798 1.44500
150.00 1.32110 1.51714 0.30034 1.81747 0.54040 1.26559 1.80599 1.47001
160.00 1.29940 1.48883 0.28959 1.77842 0.52991 1.23743 1.76733 1.44310
170.00 1.27715 1.46038 0.27962 1.74000 0.51941 1.20983 1.72924 1.41600
180.00 1.25469 1.43209 0.27035 1.70244 0.50902 1.18294 1.69196 1.38902
197.00 1.21669 1.38496 0.25601 1.64096 0.49178 1.13910 1.63088 1.34397 1.28900
200.00 1.21006 1.37681 0.25364 1.63045 0.48880 1.13162 1.62043 1.33618
210.00 1.18818 1.35006 0.24609 1.59615 0.47906 1.10725 1.58632 1.31057
230.00 1.14573 1.29869 0.23234 1.53103 0.46041 1.06111 1.52152 1.26132
250.00 1.10533 1.25031 0.22015 1.47046 0.44289 1.01832 1.46121 1.21487
297.00 1.01900 1.14819 0.19630 1.34449 0.40609 0.92965 1.33574 1.11665 1.09700
300.00 1.01389 1.14220 0.19496 1.33716 0.40393 0.92451 1.32844 1.11087
310.00 0.99720 1.12264 0.19065 1.31329 0.39690 0.90776 1.30466 1.09203
330.00 0.96533 1.08541 0.18262 1.26803 0.38354 0.87603 1.25957 1.05614
350.00 0.93535 1.05052 0.17530 1.22582 0.37104 0.84647 1.21751 1.02249
397.00 0.87162 0.97678 0.16035 1.13713 0.34466 0.78449 1.12915 0.95127 0.91400
400.00 0.86785 0.97242 0.15949 1.13192 0.34310 0.78086 1.12396 0.94707
450.00 0.80956 0.90546 0.14650 1.05196 0.31921 0.72510 1.04431 0.88228
497.00 0.76172 0.85083 0.13621 0.98704 0.29975 0.67991 0.97965 0.82932 0.81600
500.00 0.75887 0.84757 0.13561 0.98318 0.29859 0.67723 0.97581 0.82616
597.00 0.67731 0.75488 0.11880 0.87367 0.26564 0.60115 0.86679 0.73622 0.69700
600.00 0.67508 0.75235 0.11835 0.87070 0.26474 0.59909 0.86383 0.73377
650.00 0.64008 0.71272 0.11138 0.82411 0.25068 0.56678 0.81746 0.69529
700.00 0.60872 0.67729 0.10525 0.78255 0.23813 0.53798 0.77610 0.66087
797.00 0.55634 0.61824 0.09522 0.71346 0.21722 0.49016 0.70738 0.60348 0.58700
800.00 0.55488 0.61658 0.09495 0.71153 0.21663 0.48883 0.70546 0.60187
900.00 0.51028 0.56643 0.08661 0.65304 0.19890 0.44840 0.64730 0.55311
997.00 0.47376 0.52544 0.07990 0.60535 0.18443 0.41546 0.59989 0.51323 0.49000
1000.00 0.47272 0.52427 0.07972 0.60399 0.18401 0.41452 0.59854 0.51210
1500.00 0.34820 0.38504 0.05760 0.44265 0.13494 0.30332 0.43826 0.37654
2000.00 0.27778 0.30663 0.04554 0.35217 0.10737 0.24110 0.34847 0.30009
2500.00 0.23215 0.25596 0.03788 0.29384 0.08958 0.20104 0.29062 0.25066
3000.00 0.20004 0.22036 0.03255 0.25291 0.07709 0.17296 0.25004 0.21590
4000.00 0.15759 0.17339 0.02558 0.19897 0.06062 0.13598 0.19660 0.17001
5000.00 0.13064 0.14361 0.02120 0.16481 0.05019 0.11258 0.16277 0.14089

T (eV)	Total (⁴S)	BEB Direct From ²D	Exc-Ion. From ²D	Total (²D)	BEB Direct From ²P	Exc-Ion. BEB Direct From ²P	Total (²P)	Total From Mix 30% ²D, 70% gnd. state	brook78, 2 keV	brook78, 4 keV
	I	II	III	IV	V	VI	VII	VIII	IX	X
10.96					0.00000	0.00000	0.00000
12.00					0.00335	0.11996	0.12331		0.00700
12.15		0.00002		0.00002	0.00412	0.13510	0.13923	0.00000
13.00		0.02233	0.12019	0.14252	0.01029	0.20132	0.21161	0.04276	0.05400
14.00		0.04989	0.22421	0.27410	0.02634	0.27348	0.29982	0.08223	0.11300
14.53		0.07073	0.25874	0.32947	0.03703	0.31088	0.34791	0.09884
15.00	0.01099	0.10666	0.28334	0.39000	0.04689	0.34249	0.38938	0.12470	0.12200
16.00	0.04150	0.16704	0.32490	0.49194	0.07065	0.41071	0.48135	0.17663	0.24800
16.43	0.05707	0.19631	0.33949	0.53581	0.08214	0.44105	0.52319	0.20069
17.00	0.08317	0.23533	0.35628	0.59161	0.09650	0.47823	0.57473	0.23570	0.23200
18.00	0.13245	0.30285	0.38087	0.68372	0.12124	0.54004	0.66128	0.29783	0.28000
18.59	0.16218	0.34196	0.39294	0.73490	0.13596	0.57545	0.71141	0.33400
19.00	0.18354	0.36905	0.40057	0.76963	0.14590	0.59906	0.74495	0.35936
20.00	0.23477	0.43259	0.41660	0.84918	0.16915	0.65325	0.82241	0.41909	0.37200
22.00	0.33289	0.55019	0.44061	0.99080	0.21206	0.74993	0.96199	0.53027	0.56800
24.00	0.42275	0.65500	0.45707	1.11207	0.25017	0.83279	1.08296	0.62955	0.60800
25.00	0.46439	0.70282	0.46325	1.16606	0.26753	0.86966	1.13719	0.67489
27.00	0.54723	0.79349	0.47251	1.26600	0.29910	0.93543	1.23453	0.76286	0.79900
28.00	0.58851	0.83822	0.47589	1.31411	0.31432	0.96649	1.28082	0.80619
30.00	0.66918	0.92511	0.48071	1.40582	0.34400	1.02605	1.37005	0.89017
32.00	0.74360	1.00465	0.48347	1.48812	0.37165	1.08049	1.45215	0.96695	0.94500
34.00	0.81133	1.07649	0.48465	1.56114	0.39672	1.12896	1.52567	1.03628
35.00	0.84282	1.10967	0.48476	1.59443	0.40828	1.15102	1.55930	1.06830
37.00	0.90132	1.17093	0.48422	1.65515	0.42961	1.19120	1.62081	1.12747	1.15700	1.11700
38.00	0.92845	1.19917	0.48362	1.68280	0.43943	1.20946	1.64890	1.15476
40.00	0.97880	1.25126	0.48189	1.73315	0.45753	1.24265	1.70018	1.20511
42.00	1.02432	1.29796	0.47957	1.77753	0.47372	1.27180	1.74553	1.25028
44.00	1.06545	1.33981	0.47679	1.81660	0.48821	1.29736	1.78557	1.29079
45.00	1.08449	1.35907	0.47525	1.83432	0.49486	1.30892	1.80378	1.30944
47.00	1.11979	1.39452	0.47196	1.86647	0.50708	1.32980	1.83689	1.34379		1.34100
48.00	1.13613	1.41081	0.47021	1.88102	0.51269	1.33922	1.85191	1.35960
50.00	1.16640	1.44078	0.46656	1.90734	0.52299	1.35617	1.87915	1.38868
55.00	1.22969	1.50234	0.45677	1.95911	0.54401	1.38907	1.93308	1.44852
57.00	1.25072	1.52236	0.45269	1.97505	0.55080	1.39902	1.94982	1.46802
60.00	1.27836	1.54821	0.44647	1.99469	0.55951	1.41107	1.97058	1.49325
65.00	1.31544	1.58180	0.43602	2.01782	0.57070	1.42472	1.99542	1.52616
67.00	1.32758	1.59240	0.43185	2.02425	0.57418	1.42828	2.00246	1.53658		1.51300
70.00	1.34330	1.60570	0.42563	2.03133	0.57849	1.43192	2.01040	1.54971
75.00	1.36376	1.62190	0.41542	2.03732	0.58359	1.43411	2.01770	1.56583
77.00	1.37021	1.62658	0.41142	2.03800	0.58501	1.43384	2.01884	1.57054		1.59000
80.00	1.37825	1.63195	0.40549	2.03744	0.58655	1.43240	2.01895	1.57601
85.00	1.38790	1.63707	0.39588	2.03295	0.58780	1.42764	2.01544	1.58142
87.00	1.39061	1.63796	0.39213	2.03009	0.58789	1.42504	2.01294	1.58245	1.60800
90.00	1.39361	1.63821	0.38661	2.02482	0.58767	1.42051	2.00818	1.58297
95.00	1.39608	1.63615	0.37769	2.01384	0.58644	1.41152	1.99795	1.58141
97.00	1.39631	1.63457	0.37422	2.00878	0.58568	1.40750	1.99318	1.58005		1.58600
100.00	1.39592	1.63149	0.36912	2.00061	0.58432	1.40108	1.98540	1.57733
110.00	1.38947	1.61629	0.35300	1.96929	0.57807	1.37711	1.95519	1.56341
120.00	1.37710	1.59556	0.33817	1.93373	0.56997	1.35054	1.92051	1.54409
130.00	1.36075	1.57129	0.32453	1.89582	0.56070	1.32260	1.88330	1.52127
147.00	1.32743	1.52553	0.30373	1.82926	0.54353	1.27412	1.81765	1.47798	1.44500
150.00	1.32110	1.51714	0.30034	1.81747	0.54040	1.26559	1.80599	1.47001
160.00	1.29940	1.48883	0.28959	1.77842	0.52991	1.23743	1.76733	1.44310
170.00	1.27715	1.46038	0.27962	1.74000	0.51941	1.20983	1.72924	1.41600
180.00	1.25469	1.43209	0.27035	1.70244	0.50902	1.18294	1.69196	1.38902
197.00	1.21669	1.38496	0.25601	1.64096	0.49178	1.13910	1.63088	1.34397		1.28900
200.00	1.21006	1.37681	0.25364	1.63045	0.48880	1.13162	1.62043	1.33618
210.00	1.18818	1.35006	0.24609	1.59615	0.47906	1.10725	1.58632	1.31057
230.00	1.14573	1.29869	0.23234	1.53103	0.46041	1.06111	1.52152	1.26132
250.00	1.10533	1.25031	0.22015	1.47046	0.44289	1.01832	1.46121	1.21487
297.00	1.01900	1.14819	0.19630	1.34449	0.40609	0.92965	1.33574	1.11665		1.09700
300.00	1.01389	1.14220	0.19496	1.33716	0.40393	0.92451	1.32844	1.11087
310.00	0.99720	1.12264	0.19065	1.31329	0.39690	0.90776	1.30466	1.09203
330.00	0.96533	1.08541	0.18262	1.26803	0.38354	0.87603	1.25957	1.05614
350.00	0.93535	1.05052	0.17530	1.22582	0.37104	0.84647	1.21751	1.02249
397.00	0.87162	0.97678	0.16035	1.13713	0.34466	0.78449	1.12915	0.95127		0.91400
400.00	0.86785	0.97242	0.15949	1.13192	0.34310	0.78086	1.12396	0.94707
450.00	0.80956	0.90546	0.14650	1.05196	0.31921	0.72510	1.04431	0.88228
497.00	0.76172	0.85083	0.13621	0.98704	0.29975	0.67991	0.97965	0.82932		0.81600
500.00	0.75887	0.84757	0.13561	0.98318	0.29859	0.67723	0.97581	0.82616
597.00	0.67731	0.75488	0.11880	0.87367	0.26564	0.60115	0.86679	0.73622		0.69700
600.00	0.67508	0.75235	0.11835	0.87070	0.26474	0.59909	0.86383	0.73377
650.00	0.64008	0.71272	0.11138	0.82411	0.25068	0.56678	0.81746	0.69529
700.00	0.60872	0.67729	0.10525	0.78255	0.23813	0.53798	0.77610	0.66087
797.00	0.55634	0.61824	0.09522	0.71346	0.21722	0.49016	0.70738	0.60348		0.58700
800.00	0.55488	0.61658	0.09495	0.71153	0.21663	0.48883	0.70546	0.60187
900.00	0.51028	0.56643	0.08661	0.65304	0.19890	0.44840	0.64730	0.55311
997.00	0.47376	0.52544	0.07990	0.60535	0.18443	0.41546	0.59989	0.51323		0.49000
1000.00	0.47272	0.52427	0.07972	0.60399	0.18401	0.41452	0.59854	0.51210
1500.00	0.34820	0.38504	0.05760	0.44265	0.13494	0.30332	0.43826	0.37654
2000.00	0.27778	0.30663	0.04554	0.35217	0.10737	0.24110	0.34847	0.30009
2500.00	0.23215	0.25596	0.03788	0.29384	0.08958	0.20104	0.29062	0.25066
3000.00	0.20004	0.22036	0.03255	0.25291	0.07709	0.17296	0.25004	0.21590
4000.00	0.15759	0.17339	0.02558	0.19897	0.06062	0.13598	0.19660	0.17001
5000.00	0.13064	0.14361	0.02120	0.16481	0.05019	0.11258	0.16277	0.14089