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preface to fifteenth edition

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7.12 SECTION 7<br />

TABLE 7.4<br />

X-Ray Emission Energies in keV (Continued)<br />

A<strong>to</strong>mic<br />

No. Element K 1 K 1 L 1 L 1<br />

66 Dy 52.178 45.985 7.249 6.495<br />

67 Ho 53.934 47.528 7.528 6.720<br />

68 Er 55.690 49.099 7.810 6.948<br />

69 Tm 57.487 50.730 8.103 7.181<br />

70 Yb 59.35252.360 8.401 7.414<br />

71 Lu 61.282 54.063 8.708 7.654<br />

72 Hf 63.209 55.757 9.021 7.898<br />

73 Ta 65.210 57.524 9.341 8.145<br />

74 W 67.233 59.310 9.670 8.396<br />

75 Re 69.298 61.131 10.008 8.651<br />

76 Os 71.404 62.991 10.354 8.910<br />

77 Ir 73.549 64.886 10.706 9.173<br />

78 Pt 75.736 66.820 11.069 9.441<br />

79 Au 77.968 68.794 11.439 9.711<br />

80 Hg 80.258 70.821 11.823 9.987<br />

81 Tl 82.558 72.860 12.210 10.266<br />

82 Pb 84.922 74.957 12.611 10.549<br />

83 Bi 87.335 77.097 13.021 10.836<br />

84 Po 89.809 79.296 13.441 11.128<br />

85 At 92.319 81.525 13.873 11.424<br />

86 Rn 94.877 83.800 14.316 11.724<br />

87 Fr 97.483 86.119 14.770 12.029<br />

88 Ra 100.136 88.485 15.233 12.338<br />

89 Ac 102.846 90.894 15.712 12.650<br />

90 Th 105.592 93.334 16.200 12.966<br />

91 Pa 108.408 95.851 16.700 13.291<br />

92 U 111.289 98.428 17.218 13.613<br />

93 Np 114.181 101.005 17.740 13.945<br />

94 Pu 117.146 103.653 18.278 14.279<br />

95 Am 120.163 106.351 18.829 14.618<br />

96 Cm 123.235 109.098 19.393 14.961<br />

97 Bk 126.362 111.896 19.971 15.309<br />

98 Cf 129.544 114.745 20.562 15.661<br />

99 Es 132.781 117.646 21.166 16.018<br />

100 Fm 136.075 120.598 21.785 16.379<br />

of that of the corresponding K 1 radiation. In practical applications these ratios have <strong>to</strong> be corrected<br />

for differential absorption in the window of the tube and air path, the ratio of scattering fac<strong>to</strong>rs for<br />

and differential absorption in the crystal, and for sensitivity characteristics of the detec<strong>to</strong>r. Generalizing,<br />

the intensities of radiations from the K and L series are as follows:

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