Description

Samarium-149 is a stable, non-radioactive isotope of the rare earth element samarium, with the CAS registry number 14392-34-8. This specific isotope is valued for its unique nuclear properties, particularly its exceptionally high thermal neutron absorption cross-section, making it a critical material for nuclear applications. It is essential for industries and research institutions focused on nuclear reactor control, neutron shielding, and fundamental physics research.

Application

• Nuclear Reactor Control Rods: Used as a burnable poison or neutron absorber in control rods and fuel assemblies to manage reactor criticality and extend fuel cycle life.
• Neutron Shielding and Absorption: Employed in shielding materials and devices for research reactors, medical isotope production facilities, and nuclear instrumentation due to its high neutron capture capability.
• Nuclear Physics Research: Serves as a target material or standard in studies of neutron capture reactions, cross-section measurements, and nuclear structure.
• Industrial Neutron Radiography: Utilized in components for non-destructive testing systems that utilize neutron beams for imaging dense materials.
• Calibration Standards: Acts as a reference standard in mass spectrometry and other analytical techniques for isotopic analysis.
• Specialty Alloys and Compounds: Incorporated into advanced materials where specific isotopic purity is required to tailor magnetic or nuclear properties.

Basic Information

Product Name	Samarium-149
CAS No.	14392-34-8
Molecular Formula	Sm (isotopic notation: 149Sm)
Molecular Weight	148.91719 g/mol (atomic mass of 149Sm)
Synonyms	Samarium 149; 149Sm isotope; Samarium-149 isotope; Stable Samarium-149; Samarium, isotope of mass 149; Sm-149; 149Sm
EINECS	Contact for details

Quality Control

Our Samarium-149 is produced and handled under stringent quality protocols. Each batch undergoes comprehensive analysis to verify isotopic enrichment, chemical purity, and the absence of radioactive contaminants. We provide detailed Certificates of Analysis (COA) that include results from ICP-MS, GD-MS, and other relevant spectroscopic techniques, ensuring traceability and compliance with your technical specifications.

Storage

Preserve in a tightly closed container, protected from light. Due to its property of being easily oxidized, long-term storage is recommended under an inert atmosphere (e.g., argon) in a cool, dry place at room temperature (15-25°C). Handle with appropriate precautions to prevent contamination.

Specification

Item	Specification
Appearance	Metal lump, foil, or powder (as specified)
Isotopic Enrichment (149Sm)	>96% (Typical >98%)
Chemical Purity (Total Rare Earth)	>99.9%
Major Isotopic Impurities	147Sm, 148Sm, 150Sm (Specified upon grade)
Neutron Absorption Cross-Section (Thermal)	~40,800 barns
Radioactivity	Non-radioactive (stable isotope)

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.