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