Experimental K-alpha x ray energies

Z
Element
Ka2
eV(unc)
Ka1
eV(unc)
10Ne848.61(26)848.61(26)
11Na1040.98(12)1040.98(12)
12Mg1253.437(13)1253.688(11)
13Al1486.295(10)1486.708(10)
14Si1739.394(34)1739.985(19)
15P2012.70(48) *2013.68(48) *
16S2306.700(38)2307.885(34)
17Cl2620.846(39)2622.440(39)
18Ar2955.566(16)2957.682(16)
19K3311.1956(60) 3313.9476(50)
20Ca3688.128(49)3691.719(49)
21Sc4085.9526(85)4090.735(19)
22Ti4504.9201(94)4510.8991(94)
23V4944.671(59)4952.216(59)
24Cr 5405.5384(71)5414.8045(71)
25Mn5887.6859(84)5898.8010(84)
26Fe6391.0264(99)6404.0062(99)
27Co6915.5380(39)6930.3780(39)
28Ni 7461.0343(45)7478.2521(45)
29Cu8027.8416(26)8047.8227(26)
30Zn8615.823(73)8638.906(73)
31Ga9224.835(27)9251.674(66)
32Ge9855.42(10) 9886.52(11)
33As10507.50(15)10543.2674(81)
34Se11181.53(31)11222.52(12)
35Br11877.75(34)11924.36(34)
36Kr 12595.424(56)12648.002(52)
37Rb13335.88(21)13395.49(19)
38Sr14098.03(24)14165.20(24)
39Y14882.94(26) 14958.54(27)
40Zr15690.645(50)15774.914(54)
41Nb16521.28(33)16615.16(33)
42Mo17374.29(29)17479.372(10)
43Tc18250.9(12)18367.2(12) *
44Ru19150.49(18)19279.16(18)
45Rh20073.67(20)20216.12(20)
46Pd21020.15(22)21177.08(17)
47Ag21990.30(10)22162.917(30)
48Cd22984.05(20) 23173.98(20)
49In24002.03(28) 24209.75(22)
50Sn25044.04(23)25271.36(23)
51Sb26110.78(25)26358.86(25)
52Te27201.99(26)27472.57(27)
53I28317.52(67)28612.32(49)
54Xe29458.250(50)29778.78(10)
55Cs30625.40(45)30973.13(46)
56Ba31816.615(60)32193.262(70)
57La 33034.38(26)33442.12(27)
58Ce34279.28(28)34720.00(29)
59Pr 35550.59(30)36026.71(31)
60Nd37360.739(70)37360.739(70)
61Pm38171.55(70)38725.11(72)
62Sm39523.39(10)40118.481(60)
63Eu40902.33(40) 41542.63(41)
64Gd42309.30(43)42996.72(44)
65Tb43744.62(46)44482.75(47)
66Dy 45208.27(49) 45998.94(51)
67Ho46699.98(15)47547.10(77)
68Er48221.61(20)49127.24(12)
69Tm49772.67(12)50741.475(92)
70Yb51354.60(63)52389.48(66)
71Lu52965.57(67)54070.39(70)
72Hf54612.0(11) # 55790.8(11) #
73Ta56277.6(15)57533.2(16)
74W57981.77(14)59318.847(50)
75Re59718.57(43) 61141.00(89)
76Os61487.27(90)63001.07(95)
77Ir63287.29(96)64896.2(10)
78Pt65123.3(20) 66832.9(21)
79Au66990.73(22)68804.50(18)
80Hg68895.1(17)70819.5(18)
81Tl70832.5(12)72872.5(13)
82Pb72805.42(24)74970.11(17)
83Bi-20974816.21(92)77109.2(22)
84Po-20976864.4(71) *79292.9(75) *
85At-21078 944(15) *81 514(16) *
86Rn-22281 066(24) *83 783(25) *
87Fr-22383 232(25) *86 105(27) *
88Ra-22685 436(12)88 476(12)
89Ac-22787 676(18) * 90 884.8(79) *
90Th-23289 957.04(20)93 347.38(25)
91Pa-23192 283.4(20)95 866.4(20)
92U-23894 650.84(56) 98 431.58(28)
93Np-23797 068.4(30) *
94Pu-23999 523.2(12) *
94Pu-24499 529.4(20) *

The x-ray energies produce a straight line when plotted on a Moseley plot.

* Interpolated from nearby elements.
# Large deviation between theory and experiment.

Numerical data from NIST http://physics.nist.gov/PhysRefData

X-raysCharacteristic x-rays
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