Emission of plasma from a graphite lead placed in a microwave oven

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Table A.2

Characteristics of the different atomic optical transitions for other possible elements at λ = 588, 766, 769 ± 1 nm. The mention I refers to the atom and II/III/IV correspond respectively to the element double/triple/quadruple ionised.

Element	λ [nm]	Initial conf.	^2s+1L_J	Final conf.	^2s+1L_J
Si I	587.2707	3s²3p4s	$^{3} P_{2}^{o}$	3s²3p5p	³D₁
O IV	588.245	2p²(³P)3p	$^{2} D_{5 / 2}^{o}$	2p²(³P)3d	²P_3/2
N II	588.751	2s²p³	$^{3} D_{3}^{o}$	2s2p³	$^{3} P_{2}^{o}$
N II	588.786	2s²p³	$^{3} D_{3}^{o}$	2s2p³	$^{3} P_{1}^{o}$
N II	765.4044	2s²2p²(³P)3p	$^{4} S_{3 / 2}^{o}$	2s²2p²(³P)5s	⁴P_1/2
Si IV	765.456	2p⁶6p	$^{2} P_{3 / 2}^{o}$	2p⁶7s	²S_1/2
O II	765.6779	2s²2p²(³P)3d	⁴D_1/2	2s²2p²(³P)4p	$^{4} D_{1 / 2}^{o}$
Al III	766.0259	2p⁶5p	$^{2} P_{1 / 2}^{o}$	2p⁶6s	²S_1/2
Si I	768.267	3s²3p4p	¹P₁	3s²3p5d	$^{1} D_{2}^{o}$
Al III	768.1971	2p⁶5p	$^{2} P_{3 / 2}^{o}$	2p⁶6s	²S_1/2
Al II	768.316	3s5d	³D₂	3p4s	$^{3} P_{1}^{o}$
Al II	768.325	3s5d	³D₁	3p4s	$^{3} P_{1}^{o}$

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