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X-Ray Energies

When K-shell vacancies are filled by a higher shell electron, energy is liberated in the process as either an X-ray or an Auger electron. The following is a listing of each element and its atomic number, followed by (in order) the K-alpha, K’-beta-1 and K’-beta-2 x-ray energies (in units of thousand electron volts, or “keV”), as applicable

Actinium (89)

  • 89.7
  • 102.6
  • 105.7

Aluminum (13)

  • 1.49

Americium (95)

  • 104.7
  • 119.9
  • 123.6

Antimony (51)

  • 26.3
  • 29.7
  • 30.4

Argon (18)

  • 2.96
  • 3.19

Arsenic (33)

  • 10.5
  • 11.7

Astatine (85)

  • 80.5
  • 92.7
  • 95.0

Barium (56)

  • 32.0
  • 36.4
  • 37.2

Berkelium (97)

  • 110.2
  • 126.2
  • 130.2

Beryllium (4)

  • 0.11

Bismuth (83)

  • 46.3
  • 87.1
  • 89.8

Boron (5)

  • 0.18

Bromine (35)

  • 11.9
  • 13.3

Cadmium (48)

  • 23.1
  • 26.1
  • 26.6

Calcium (20)

  • 3.69
  • 4.01

Californium (98)

  • 113.0
  • 129.4
  • 133.5

Carbon (6)

  • 0.28

Cerium (58)

  • 34.5
  • 39.3
  • 40.2

Cesium (55)

  • 30.8
  • 34.9
  • 35.8

Chlorine (17)

  • 2.62

Chromium (24)

  • 5.42
  • 5.95

Cobalt (27)

  • 6.93
  • 7.65

Copper (29)

  • 8.03
  • 8.91

Curium (96)

  • 107.5
  • 123.0
  • 126.9

Dysprosium (66)

  • 45.6
  • 52.1
  • 53.4

Einsteinium (99)

  • 115.9
  • 132.7
  • 136.9

Erbium (68)

  • 48.7
  • 55.6
  • 57.1

Europium (63)

  • 41.3
  • 47.0
  • 48.2

Fermium (100)

  • 118.8
  • 136.0
  • 140.4

Fluorine (9)

  • 0.68

Francium (87)

  • 85.0
  • 97.3
  • 100.2

Gadolinium (64)

  • 42.7
  • 48.7
  • 49.9

Gallium (31)

  • 9.24
  • 10.3

Germanium (32)

  • 9.88
  • 11.1

Gold (79)

  • 69.2
  • 78.0
  • 80.1

Hafnium (72)

  • 55.2
  • 63.2
  • 64.9

Holmium (67)

  • 47.1
  • 53.8
  • 55.3

Indium (49)

  • 24.1
  • 27.3
  • 27.9

Iodine (53)

  • 28.5
  • 32.3
  • 33.0

Iridium (77)

  • 64.3
  • 73.6
  • 75.6

Iron (26)

  • 6.40
  • 7.06

Krypton (36)

  • 12.6
  • 14.1

Lanthanum (57)

  • 33.3
  • 37.8
  • 38.7

Lawrencium (103)

  • 127.9
  • 146.2
  • 151.2

Lead (82)

  • 74.2
  • 84.7
  • 87.3

Lithium (3)

  • 0.05

Lutetium (71)

  • 53.5
  • 61.3
  • 62.9

Magnesium (12)

  • 1.25

Manganese (25)

  • 5.90
  • 6.49

Mendelevium (101)

  • 122.8
  • 139.4
  • 144.9

Mercury (80)

  • 70.1
  • 80.1
  • 82.5

Molybdenum (42)

  • 17.4
  • 19.6
  • 20.0

Neodynium (60)

  • 37.2
  • 42.3
  • 43.3

Neon (10)

  • 0.85

Neptunium (93)

  • 99.5
  • 113.9
  • 117.5

Nickel (28)

  • 7.47
  • 8.26

Niobium (41)

  • 16.6
  • 18.6
  • 19.0

Nitrogen (7)

  • 0.40

Nobelium (102)

  • 124.8
  • 142.7
  • 147.5

Osmium (76)

  • 62.4
  • 71.4
  • 73.4

Oxygen (8)

  • 0.53

Palladium (46)

  • 21.1
  • 23.8
  • 24.3

Phosphorus (15)

  • 2.01

Platinium (78)

  • 66.2
  • 75.7
  • 77.8

Plutonium (94)

  • 102.1
  • 116.9
  • 120.5

Polonium (84)

  • 78.4
  • 89.6
  • 92.3

Potassium (19)

  • 3.31
  • 3.59

Praseodynium (59)

  • 35.9
  • 40.7
  • 41.8

Promethium (61)

  • 38.5
  • 43.8
  • 44.9

Protactinium (91)

  • 94.5
  • 108.1
  • 111.4

Radium (88)

  • 87.3
  • 99.9
  • 103.0

Radon (86)

  • 82.8
  • 94.7
  • 97.5

Rhenium (75)

  • 60.6
  • 69.3
  • 71.2

Rhodium (45)

  • 20.2
  • 22.7
  • 23.2

Rubidium (37)

  • 13.4
  • 15.0

Ruthenium (44)

  • 19.2
  • 21.6
  • 22.1

Samarium (62)

  • 39.8
  • 45.4
  • 46.6

Scandium (21)

  • 4.09
  • 4.46

Selenium (34)

  • 11.2
  • 12.5

Silicon (14)

  • 1.74

Silver (47)

  • 22.1
  • 24.9
  • 25.5

Sodium (11)

  • 1.04

Strontium (38)

  • 14.1
  • 15.8
  • 16.1

Sulfur (16)

  • 2.31

Tantalum (73)

  • 57.1
  • 65.2
  • 67.0

Technetium (43)

  • 18.3
  • 20.6
  • 21.0

Tellurium (52)

  • 27.3
  • 31.0
  • 31.7

Terbium (65)

  • 44.1
  • 50.4
  • 51.7

Thallium (81)

  • 72.1
  • 82.4
  • 84.9

Thorium (90)

  • 92.1
  • 105.3
  • 108.6

Thulium (69)

  • 50.3
  • 57.5
  • 59.0

Tin (50)

  • 25.1
  • 28.4
  • 29.1

Titanium (22)

  • 4.51
  • 4.93

Tungsten (74)

  • 58.8
  • 67.2
  • 69.1

Uranium (92)

  • 97.0
  • 111.0
  • 114.5

Vanadium (23)

  • 4.95
  • 5.43

Xenon (54)

  • 29.6
  • 33.6
  • 34.4

Ytterbium (70)

  • 51.9
  • 59.4
  • 60.9

Yttrium (39)

  • 14.9
  • 16.7
  • 17.0

Zinc (30)

  • 8.63
  • 9.57

Zirconium (40)

  • 15.7
  • 17.7
  • 18.0