149Sm Isotope Information and Examples of Enriched 149Sm Applications:

Samarium-149 isotope (Sm-149 isotope, 149Sm isotope)

  • 149Sm isotope is used for polarizing thermal neutron beams;
  • 149Sm isotope is used for research in nuclear physics;

149Sm isotope is available to order from BuyIsotope.com in 149Sm oxide chemical form. Please contact us via request a 149Sm quote BuyIsotope.com to order 149Sm isotope to get 149Sm price to buy 149Sm isotope.

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149Sm oxide Safety Data Sheet (SDS) - Download pdf file
Download 149Sm oxide SDS

Properties Of 149Sm Isotope:

Neutron Number (N)87
Atomic Number / Proton Number (Z)62
Mass Number / Nucleon Number (A)149
Natural Abundance (%)0.1382
Atomic Mass (Da)148.91719
Relative Isotopic Mass148.91719
Quadrupole Moment0.078
g-factor (g value)-0.1908
Electron Configuration Blockf
Melting Point (K)1350
Boiling Point (K)2064
Specific Heat0.18
Heat of Formation206.7
Thermal Conductivity
Dipole Polarizability 192
Electron Affinity (kJ/mole)
Electronegativity (Pauling scale)1.17
Atomic Radius (pm)181
Covalent Radius (pm)185
VDW Radius (pm)271
Lattice Constant9
Crystal StructureRHL
Jmol color#8fffc7

Samarium Information

Soft silvery metallic element, belongs to the lanthanoids. Seven natural isotopes, Sm-147 is the only radioisotope, and has a half-life of 2.5*10^11 years. Used for making special alloys needed in the production of nuclear reactors. Also used as a neutron absorber. Small quantities of samarium oxide is used in special optical glasses. The largest use of the element is its ferromagnetic alloy which produces permanent magnets that are five times stronger than magnets produced by any other material. Discovered by Francois Lecoq de Boisbaudran in 1879.

It is used in the electronics and ceramics industries. It is easily magnetized and very difficult to demagnetize. This suggests important future applications in solid-state and superconductor technologies.

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