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Helium

Description & History
he·li·um (1872):
a light colorless nonflammable gaseous element found especially in natural gases and used chiefly for inflating airships and balloons, for filling incandescent lamps, and for cryogenic research
Element

SymbolHe
Z 2
Atomic Weight 4.00299978
Density 0.000178500006
Edge Energies
(keV)
K 0.0250000004
L1 0.
L2 0.
L3 0.
M 0.
K-alpha 0.
K-beta 0.
L-alpha 0.
L-beta 0.
Edge jumps

Edge jumps can not be calculated for z < 10
Fluorescence
yield
K 0.
L1 0.
L2 0.
L3 0.

Alphabetical List of Elements

  Actinium(Ac) Europium(Eu) Neodymium(Nd) Silicon(Si)
  Aluminum(Al) Fermium(Fm) Neon(Ne) Silver(Ag)
  Americium(Am) Fluorine(F) Neptunium(Np) Sodium(Na)
  Antimony(Sb) Francium(Fr) Nickel(Ni) Strontium(Sr)
  Argon(Ar) Gadolinium(Gd) Niobium(Nb) Sulfur(S)
  Arsenic(As) Gallium(Ga) Nitrogen(N) Tantalum(Ta)
  Astatine(At) Germanium(Ge) Nobelium(No) Technetium(Tc)
  Barium(Ba) Gold(Au) Osmium(Os) Tellurium(Te)
  Berkelium(Bk) Hafnium(Hf) Oxygen(O) Terbium(Tb)
  Beryllium(Be) Hassium(Hs) Palladium(Pd) Thallium(Tl)
  Bismuth(Bi) Helium(He) Phosphorus(P) Thorium(Th)
  Bohrium(Bh) Holmium(Ho) Platinum(Pt) Thulium(Tm)
  Boron(B) Hydrogen(H) Plutonium(Pu) Tin(Sn)
  Bromine(Br) Indium(In) Polonium(Po) Titanium(Ti)
  Cadmium(Cd) Iodine(I) Potassium(K) Tungsten(W)
  Calcium(Ca) Iridium(Ir) Praseodymium(Pr) Ununbium(Uub)
  Californium(Cf) Iron(Fe) Promethium(Pm) Ununhexium(Uuh)
  Carbon(C) Krypton(Kr) Protactinium(Pa) Ununnilium(Uun)
  Cerium(Ce) Lanthanum(La) Radium(Ra) Ununoctium(Uuo)
  Cesium(Cs) Lawrencium(Lr) Radon(Rn) Ununquadium(Uuq)
  Chlorine(Cl) Lead(Pb) Rhenium(Re) Unununium(Uuu)
  Chromium(Cr) Lithium(Li) Rhodium(Rh) Uranium(U)
  Cobalt(Co) Lutetium(Lu) Rubidium(Rb) Vanadium(V)
  Copper(Cu) Magnesium(Mg) Ruthenium(Ru) Xenon(Xe)
  Curium(Cm) Manganese(Mn) Rutherfordium(Rf) Ytterbium(Yb)
  Dubnium(Db) Meitnerium(Mt) Samarium(Sm) Yttrium(Y)
  Dysprosium(Dy) Mendelevium(Md) Scandium(Sc) Zinc(Zn)
  Einsteinium(Es) Mercury(Hg) Seaborgium(Sg) Zirconium(Zr)
  Erbium(Er) Molybdenum(Mo) Selenium(Se)


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