Table 4: The spectroscopic data of Ca lines used for the determination of electron temperature.

Wavelength,
(nm)
Transitions Statistical weightTransition probability,
A (s−1)
Excitation energy,
(cm−1)

336.193p64s6d 3D3 → 3p64s4p 752.23 × 10745052.374
443.493p64s4d 3D2 → 3p64s4p 536.7 × 10737751.867
445.473p64s4d 3D3 → 3p64s4p758.7 × 10737757.449
452.693P64snp → 3p63d4s 1D2534.1 × 10743933.477
643.913p64d4p → 3p63d4s 3D3795.3 × 10735896.889