Measurements of Potential Positive Ion Sources of Gadolinium

Spectral line [nm]	I₁ [arb. units]	I₂ [arb. units]	I₂/I₁	E_i [cm⁻¹]	E_k [cm⁻¹]	A_ki [s⁻¹]
368.413	1230	2070	1.68	0.000	27135.695	9.1e+07
371.357	1680	2960	1.76	215.124	27135.695	9.2e+07
371.748	–	–	–	532.977	27425.245	6.8e+07
378.305	1340	2280	1.70	999.121	27425.245	9.4e+07
405.364	–	–	–	999.121	25661.340	6.2e+07
405.822	4390	9170	2.09	215.124	24849.514	5.7e+07
407.870	3330	6410	1.92	532.977	25043.649	5.9e+07
417.554	1830	3110	1.70	1719.087	25661.340	4.2e+07
419.078	3730	7630	2.05	999.121	24854.297	3.0e+07
422.585	8600	19060	2.22	1719.087	25376.313	8.9e+07
431.384	3000	5830	1.94	215.124	23389.780	4.3e+07
432.712	4950	10420	2.11	0.000	23103.660	5.2e+07
434.646	5770	10870	1.88	999.121	23999.912	–
440.186	3979	8630	2.17	1719.087	24430.425	3.8e+07
442.241	4580	9030	1.97	215.124	22820.895	2.8e+07
443.063	4000	7560	1.89	0.000	22563.824	3.0e+07
451.966	2670	5480	2.05	215.124	22334.508	3.8e+07
510.345	2530	5440	2.15	7947.294	27536.397	–
515.584	2310	4750	2.06	7480.348	26870.393	–

Observed Gd II spectral lines and their intensities.

Spectral line [nm]	I₁ [arb. units]	I₂ [arb. units]	I₂/I₁	E_i [cm⁻¹]	E_k [cm⁻¹]	A_ki [s⁻¹]
335.047	–	–	–	1158.943	30366.818	–
335.862	1070	1610	1.50	261.841	31145.651	–
336.223	–	–	–	633.273	29353.344	–
342.247	–	–	–	1935.310	29045.291	–
354.580	–	–	–	1158.943	29353.344	–
358.496	1239	1850	1.49	1158.943	27864.534	–
364.619	–	–	–	1935.310	27162.224	–
374.347	1550	2770	1.79	1158.943	26595.222	–
376.839	1930	3150	1.63	633.273	25960.073	–
379.637	1680	2900	1.73	261.841	26211.912	–
385.097	2080	3200	1.54	0.000	30366.818	–
385.245	–	–	–	261.841	32677.540	–
391.651	–	–	–	4841.106	30996.851	–
404.986	–	–	–	7992.268	30101.366	–
409.861	–	3620	–	6605.154	30366.818	–
413.037	–	–	–	5897.264	31145.651	–
418.425	–	–	–	3972.167	29353.344	–

Language: English

Page range: 172 - 175

Submitted on: Dec 25, 2025

Accepted on: May 15, 2026

Published on: Jun 10, 2026

Published by: Slovak Academy of Sciences, Institute of Measurement Science

In partnership with: Paradigm Publishing Services

Publication frequency: Volume open

Keywords:

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© 2026 Matīss Čakšs, Aleksandrs Koļesņiks, Arnolds Ūbelis, published by Slovak Academy of Sciences, Institute of Measurement Science
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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