Abstract
The populations of the excited state 2 P 3/2 relative to the ground state 2 P 1/2 have been investigated in C ii, N iii, O iv, Ne vi, Mg viii, Si x, and Si ii by considering all the radiative and collisional processes including the collisional transitions to the higher states which cascade to the upper level. The relative populations are used for the calculation of the line emissivities. The intensities of 76 320, 30 258 and 14 302 lines of Nevi, Mgviii, and Six ions respectively in the chromosphere-corona transition region are also calculated.
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Ansari, S. M. R. and Alam, B.: 1975, Solar Phys. 41, 97.
Bely, O. and Faucher, P.: 1970, Astron. Astrophys. 6, 88.
Blaha, M.: 1968, Ann. Astrophys. 31, 311.
Blaha, M.: 1969, Astron. Astrophys. 1, 42.
Blaha, M.: 1971, Solar Phys. 17, 99.
Dupree, A. K.: 1972, Astrophys. J. 178, 527.
Flower, D. R. and Pineau des Forets, G.: 1973, Astron. Astrophys. 24, 181.
Jordan, C.: 1969, Monthly Notices Roy. Astron. Soc. 142, 501.
Mason, H. E.: 1975, Monthly Notices Roy. Astron. Soc. 170, 651.
Moore, C. E.: 1949, Atomic Energy Levels, Vol. I, NBS 467, U.S. Government Printing Office, Washington, D.C.
Pottasch, S. R.: 1963, Astrophys. J. 137, 945.
Rozelot, J. P., Noens, J. C., and Pech, B.: 1974, Astron. Astrophys. 33, 469.
Seaton, M. J.: 1964, Monthly Notices Roy. Astron. Soc. 127, 191.
Wiese, W. L., Smith, M. W., and Glennon, B. M.: 1966, Atomic Transition Probabilities, Vol. I, NSRDS-NBS 4, U.S. Government Printing Office, Washington, D.C.
Wiese, W. L., Smith, M. W., and Miles, B. M.: 1969, Atomic Transition Probabilities, Vol. II, NSRDS-NBS 22, U.S. Government Printing Office, Washington, D.C.
Zirker, J. B.: 1970, Solar Phys. 11, 68.
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Chandra, S. Excitation equilibrium for low lying levels in Cii, Niii, Oiv, Nevi, Mgviii, Six, and Siii . Sol Phys 58, 291–297 (1978). https://doi.org/10.1007/BF00157274
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DOI: https://doi.org/10.1007/BF00157274