Theoretical study of state-selective charge exchange processes in collisions between highly charged N<sup>6+</sup> ions and H atoms

NIU Jiajie; ZHANG Weiwei; QI Yueying; GAO Junwen

doi:10.7498/aps.74.20250541

Abstract

In this work, we systematically investigate single-electron capture process in the collision between N⁶⁺(1s) ions and H(1s) atoms in a wide energy range from 0.25 to 225 keV/u by using a two-electron semiclassical asymptotic-state close-coupling method. Spin-averaged and spin-resolved total cross sections, as well as n-resolved and $n\ell $-resolved partial cross sections, are calculated and comprehensively compared with existing experimental measurements and theoretical predictions. The results show at low energies (<10 keV/u), energy dependence of the total cross section is weak, and it follows a monotonically decreasing trend at higher energies. The analysis of $n\ell $-resolved cross sections reveals the strong coupling effects between various channels at low energies, while at high energies the relative $\ell $ distributions in each $n\ell $-resolved cross section approximately follow the statistical $\ell $ distribution, for which the electrons are therefore mainly captured into subshells of the maximum $\ell $. The present study demonstrates the importance of a two-electron treatment taking into account electronic correlation and the use of extended basis sets in the close-coupling scheme. However, substantial discrepancies exist among theoretical approaches at low energies. It is clear that further experimental and theoretical efforts are required to draw definite conclusions. Our work provides a complete and consistent set of cross sections in a broad range of collision energies, which can be used for various plasma diagnosis and modeling. The datasets presented in this paper are openly available at https://doi.org/10.57760/sciencedb.j00213.00143.

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Authors and contacts

Corresponding author: QI Yueying, yying_qi@zjxu.edu.cn ; GAO Junwen, gaojunwen@hznu.edu.cn

Funds: Project supported by the National Natural Science Foundation of China (Grant No. 12374229).

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Cited By

DownLoad: Full-Size Img PowerPoint

E	1s3s	1s3p	1s3d	1s4s	1s4p	1s4d	1s4f	1s5s	1s5p	1s5d	1s5f	1s5g	总截面
0.25	0.0002	0.0002	0.0002	3.7648	12.7027	8.5685	13.3494	0.1747	0.6930	0.9648	0.4290	2.0774	42.7323
0.56	0.0002	0.0007	0.0013	6.4063	10.4408	5.2656	13.6226	0.2466	1.9896	0.9673	1.0273	1.4035	41.4063
1.00	0.0023	0.0054	0.0108	9.2673	9.5404	5.9963	11.9886	0.8304	0.9395	1.0427	1.9539	0.9143	42.5571
2.25	0.0273	0.0799	0.1115	7.5560	8.9939	7.4811	12.8323	0.6563	0.4619	0.4968	2.3590	2.3944	43.5764
4.00	0.0927	0.4714	0.2950	5.7645	8.3648	9.1302	12.2192	0.3532	0.4350	0.7830	2.5118	3.1321	43.8349
6.25	0.2357	0.6419	0.4629	3.3885	6.5808	10.4578	13.2696	0.4157	0.8553	0.9404	2.9255	4.2443	44.7038
9.00	0.3394	0.6624	0.5941	1.8598	4.7615	9.9354	14.5785	0.2967	0.7135	1.1683	2.7464	5.8699	43.8333
16.00	0.3529	0.9129	1.1518	0.6615	2.6646	7.6238	14.9072	0.1737	0.5804	1.4345	2.9620	5.9363	39.9444
25.00	0.3508	1.0430	1.6138	0.3115	1.5698	4.7657	12.1202	0.1464	0.5298	1.3658	3.1366	5.4187	33.7083
36.00	0.2659	0.9920	1.7688	0.1915	0.9180	2.7773	8.3503	0.1050	0.4919	1.1551	2.9266	4.6950	27.5872
56.25	0.1245	0.5889	1.5077	0.0920	0.4132	1.1599	4.1918	0.0741	0.4061	0.7697	2.0000	2.7565	19.0517
100.00	0.0250	0.1622	0.6719	0.0243	0.1261	0.4415	0.9926	0.0292	0.1383	0.3505	0.7732	0.6489	6.8768
156.25	0.0103	0.0393	0.2537	0.0096	0.0326	0.1687	0.1934	0.0105	0.0340	0.1390	0.2303	0.1001	1.8768
225.00	0.0035	0.0209	0.0742	0.0026	0.0170	0.0480	0.0392	0.0022	0.0130	0.0392	0.0594	0.0148	0.5114

DownLoad: CSV

E	1s3s ¹S	1s3p ¹P	1s3d ¹D	1s4s ¹S	1s4p ¹P	1s4d ¹D	1s4f ¹F	1s5s ¹S	1s5p ¹P	1s5d ¹D	1s5f ¹F	1s5g ¹G	总截面¹L
0.25	0.0001	0.0002	0.0002	4.9841	4.1948	6.0168	13.7765	0.1364	1.1173	0.7492	0.4985	3.0177	34.5024
0.56	0.0003	0.0010	0.0013	6.6345	3.7956	8.0072	13.0620	0.3696	1.9096	1.1744	1.0736	1.6679	37.7347
1.00	0.0023	0.0073	0.0076	8.8291	4.8926	9.4065	12.8317	0.9635	1.1060	0.8840	1.9907	0.9559	41.9406
2.25	0.0314	0.0879	0.0599	6.6027	5.3151	11.9836	14.0620	0.6144	0.5642	0.4328	2.4516	2.4166	44.7399
4.00	0.1416	0.4313	0.2924	5.0184	5.9133	12.5596	13.2306	0.2941	0.4484	0.7915	2.4992	3.1441	45.0342
6.25	0.3049	0.6447	0.4420	2.8775	5.0788	12.7611	14.0163	0.3535	0.7570	0.9597	2.8547	4.2684	45.5828
9.00	0.3949	0.7666	0.6046	1.5960	3.9072	11.1796	15.1420	0.2527	0.6901	1.1460	2.6755	5.7122	44.3560
16.00	0.3889	1.0895	1.2582	0.5916	2.5040	7.9453	14.9587	0.1480	0.6129	1.3966	2.9507	5.7149	40.1231
25.00	0.3696	1.1997	1.7008	0.2885	1.6088	4.8367	11.9200	0.1366	0.5699	1.3379	3.0703	5.4103	33.7599
36.00	0.2757	1.1118	1.8295	0.1861	0.9715	2.7831	8.2105	0.0998	0.5225	1.1366	2.8470	4.7282	27.6453
56.25	0.1240	0.6285	1.5212	0.0906	0.4484	1.1474	4.1679	0.0700	0.4274	0.7624	1.9865	2.7557	19.0999
100.00	0.0249	0.1684	0.6648	0.0245	0.1309	0.4330	0.9952	0.0297	0.1417	0.3476	0.7773	0.6477	6.8638
156.25	0.0101	0.0413	0.2503	0.0092	0.0340	0.1657	0.1940	0.0101	0.0347	0.1368	0.2312	0.1003	1.8767
225.00	0.0033	0.0222	0.0735	0.0024	0.0180	0.0474	0.0392	0.0021	0.0136	0.0387	0.0594	0.0148	0.5149

DownLoad: CSV

E	1s3s ³S	1s3p ³P	1s3d ³D	1s4s ³S	1s4p ³P	1s4d ³D	1s4f ³F	1s5s ³S	1s5p ³P	1s5d ³D	1s5f ³F	1s5g ³G	总截面³L
0.25	0.0002	0.0002	0.0002	3.3584	15.5386	9.4191	13.2070	0.1875	0.5515	1.0366	0.4058	1.7640	45.4756
0.56	0.0002	0.0006	0.0013	6.3302	12.6558	4.3517	13.8094	0.2056	2.0162	0.8983	1.0119	1.3154	42.6301
1.00	0.0022	0.0048	0.0119	9.4133	11.0897	4.8596	11.7075	0.7860	0.8840	1.0955	1.9416	0.9004	42.7626
2.25	0.0260	0.0772	0.1287	7.8738	10.2202	5.9803	12.4224	0.6703	0.4279	0.5181	2.3282	2.3870	43.1886
4.00	0.0764	0.4847	0.2958	6.0132	9.1819	7.9870	11.8821	0.3729	0.4305	0.7801	2.5160	3.1281	43.4352
6.25	0.2126	0.6409	0.4699	3.5588	7.0815	9.6901	13.0207	0.4365	0.8881	0.9340	2.9492	4.2362	44.4108
9.00	0.3208	0.6277	0.5906	1.9477	5.0463	9.5207	14.3906	0.3114	0.7213	1.1757	2.7700	5.9224	43.6591
16.00	0.3409	0.8540	1.1163	0.6848	2.7181	7.5166	14.8900	0.1822	0.5696	1.4472	2.9658	6.0101	39.8848
25.00	0.3445	0.9908	1.5849	0.3192	1.5568	4.7420	12.1870	0.1497	0.5165	1.3750	3.1587	5.4216	33.6911
36.00	0.2626	0.9520	1.7486	0.1933	0.9002	2.7754	8.3969	0.1067	0.4817	1.1613	2.9532	4.6839	27.5678
56.25	0.1247	0.5757	1.5031	0.0924	0.4014	1.1641	4.1998	0.0755	0.3991	0.7721	2.0045	2.7568	19.0356
100.00	0.0250	0.1601	0.6743	0.0243	0.1245	0.4443	0.9917	0.0290	0.1372	0.3515	0.7718	0.6493	6.8811
156.25	0.0104	0.0387	0.2549	0.0098	0.0321	0.1697	0.1932	0.0106	0.0338	0.1398	0.2300	0.1001	1.8769
225.00	0.0036	0.0204	0.0745	0.0027	0.0167	0.0482	0.0392	0.0023	0.0127	0.0394	0.0595	0.0148	0.5102

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Vol. 74, Issue 15 - 2025-08-05

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