FISICA DE RADIACIONES

X-Ray Mass Attenuation Coefficients

Table 3. Values of the mass attenuation coefficient, , and the mass energy-absorption coefficient, , as a function of photon energy, for elemental media. Atomic absorption edges are indicated by the shell designation.

Z		Element			Z		Element			Z		Element			Z		Element
1		H	Hydrogen		24		Cr	Chromium		47		Ag	Silver		70		Yb	Ytterbium
2		He	Helium		25		Mn	Manganese		48		Cd	Cadmium		71		Lu	Lutetium
3		Li	Lithium		26		Fe	Iron		49		In	Indium		72		Hf	Hafnium
4		Be	Beryllium		27		Co	Cobalt		50		Sn	Tin		73		Ta	Tantalum
5		B	Boron		28		Ni	Nickel		51		Sb	Antimony		74		W	Tungsten
6		C	Carbon, Graphite		29		Cu	Copper		52		Te	Tellurium		75		Re	Rhenium
7		N	Nitrogen		30		Zn	Zinc		53		I	Iodine		76		Os	Osmium
8		O	Oxygen		31		Ga	Gallium		54		Xe	Xenon		77		Ir	Iridium
9		F	Fluorine		32		Ge	Germanium		55		Cs	Cesium		78		Pt	Platinum
10		Ne	Neon		33		As	Arsenic		56		Ba	Barium		79		Au	Gold
11		Na	Sodium		34		Se	Selenium		57		La	Lanthanum		80		Hg	Mercury
12		Mg	Magnesium		35		Br	Bromine		58		Ce	Cerium		81		Tl	Thallium
13		Al	Aluminum		36		Kr	Krypton		59		Pr	Praseodymium		82		Pb	Lead
14		Si	Silicon		37		Rb	Rubidium		60		Nd	Neodymium		83		Bi	Bismuth
15		P	Phosphorus		38		Sr	Strontium		61		Pm	Promethium		84		Po	Polonium
16		S	Sulfur		39		Y	Yttrium		62		Sm	Samarium		85		At	Astatine
17		Cl	Chlorine		40		Zr	Zirconium		63		Eu	Europium		86		Rn	Radon
18		Ar	Argon		41		Nb	Niobium		64		Gd	Gadolinium		87		Fr	Francium
19		K	Potassium		42		Mo	Molybdenum		65		Tb	Terbium		88		Ra	Radium
20		Ca	Calcium		43		Tc	Technetium		66		Dy	Dysprosium		89		Ac	Actinium
21		Sc	Scandium		44		Ru	Ruthenium		67		Ho	Holmium		90		Th	Thorium
22		Ti	Titanium		45		Rh	Rhodium		68		Er	Erbium		91		Pa	Protactinium
23		V	Vanadium		46		Pd	Palladium		69		Tm	Thulium		92		U	Uranium