0.5-0.35 KeV Energy Ion Level 1 Level 2 (ev) 498.0 N VII 1 2 498.0 N VI 1S2 1S 1S3P 1PO 496.0 AR XV 1S22S2P 1PO 1S22S3D 3D 496.0 AR XV 1S22S2 1S(0) 1S22S3P 1PO 494.0 CA XI 1S22S22P6 1S22S2P64P 486.0 CA XIII 1S22S22P4 3P(0) 1S22S22P33D 3DO 485.0 CA XI 1S22S22P6 1S22S22P54D 484.0 S XVI 2 3 481.0 CA XIV 1S22S2P4 1S22S2P33D 481.0 S XIII 1S22S2P 1PO 1S22S4L 476.0 C VI 1 6 473.0 CA XIV 1S22S22P3 4S(3/2)O 1S22S22P23S 4L 470.0 C VI 1 5 468.0 CA XIV 1S22S22P3 4S(3/2)O 1S22S22P23S 2L 463.0 CA XI 1S22S22P6 1S22S22P54S 459.0 C VI 1 4 459.0 CA XI 1S22S22P6 1S22S2P63P 459.0 CA XII 1S22S22P5 2P(1/2)O 1S22S22P43D 2S,2P 458.0 S XI 1S22S22P2 3P(0) 1S22S22P4L 453.0 AR XIV 1S22S22P 2P(1/2)O 1S23D 453.0 AR XV 1S22S2P 1PO 1S22S3D 1D 452.0 CA XX 3 6 447.0 FE XXVI 3 4 444.0 SI XII 1S22S 2S(1/2) 1S25P 438.0 AR XV 1S22S2P 1PO 1S22S3S 1S 438.0 CA XII 1S22S22P5 2P(1/2)O 1S22S22P43D 2F,2D 436.0 S XII 1S22S22P 2P(1/2)O 1S24D 435.0 C VI 1 3 435.0 CA XIV 1S22S2P4 1S22S2P33S 435.0 MG XII 2 6 435.0 S XV 1S2P 3PO 1S3D 3D 433.0 N IV 1S22S2 1S(0) 1S2S22PX 431.0 N VI 1S2 1S 1S2P 1PO 429.0 CA XIII 1S22S22P4 3P(0) 1S22S22P33S 3DO,3PO 426.0 N VI 1S2 1S 1S2P 3PO 426.0 N III 1S22S22P 2P(1/2)O 1S2S22P2X 425.0 CA XII 1S22S2P6 1S22S2P53D 424.0 AR XIV 1S22S22P 2P(1/2)O 1S23S 422.0 S XV 1S2P 1PO 1S3D 1D 420.0 N VI 1S2 1S 1S2S 3S 418.0 CA XIII 1S22S22P4 3P(0) 1S22S22P33S 3SO 416.0 CA XIII 1S22S2P5 2S22S2P43S 416.0 NI XVIII 1S22S22P63S 3S(1/2) 1S22S22P65P 413.0 N II 1S22S22P2 3P(0) 1S2P22P3X 412.0 MG XII 2 5 407.0 S XIV 1S22S 2S(1/2) 1S23P 407.0 CA XI 1S22S22P6 1S22S22P53D 1DO,1FO 405.0 AR XII 1S22S22P3 4S(3/2)O 1S22S22P23D 2L 402.0 CA XI 1S22S22P6 1S22S22P53D 1PO 400.0 SI XII 1S22S 2S(1/2) 1S24P 397.0 CA XI 1S22S22P6 1S22S22P53D 3PO 394.0 AR XII 1S22S22P3 4S(3/2)O 1S22S22P23D 4L 388.0 CA XX 3 5 387.0 CA XII 1S22S22P5 2P(1/2)O 1S22S22P33S 387.0 S XIII 1S22S2P 1PO 1S22S3D 3D 385.0 NI XVIII 1S22S22P63P 1S22S22P65D 383.0 S XIII 1S22S2 1S(0) 1S22S3P 1PO 381.0 CA XII 1S22S2P6 1S22S2P53S 381.0 S XIV 1S22P 2P(1/2) 1S23D 380.0 AR X 1S22S22P5 2P(1/2)O 1S22S2P53P 376.0 SI XII 1S22P 2P(1/2) 1S24D 373.0 S XIV 1S22P 2P(1/2) 1S23S 372.0 NI XVII 1S22S22P63S3D 1S22S22P63S5P 371.0 C V 1S2 1S 1S4P 1PO 370.0 SI XIV 2 3 370.0 SI XI 1S22S2 1S(0) 1S22S4P 368.0 NIXXVIII 4 6 367.0 MG XII 2 4 366.0 AR XVIII 3 6 366.0 C VI 1 2 365.0 S XIII 1S22S2P 1PO 1S22S3D 1D 361.0 AR XI 1S22S22P4 3P(0) 1S22S22P33D 3PO 359.0 AR XI 1S22S22P4 3P(0) 1S22S22P33D 3DO 358.0 AR XII 1S22S22P3 4S(3/2)O 1S22S22P23S 2L 356.0 S IX 1S22S22P4 3P(0) 1S22S22P3NL 355.0 C V 1S2 1S 1S3P 1PO 352.0 CA XI 1S22S22P6 1S22S22P53S 1PO 350.0 SI XI 1S22S2P 1PO 1S22S4L