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X-ray Quality Rhodium Foil (Light Tight)

Grade: X-ray Quality
Formula: Rh
Form: Foil (Light Tight)
Material: Rhodium
CAS Number: 7440-16-6
Commodity: Precious Metals
Temper: As Rolled
Light Tight: Light Tight
X-ray Quality Rhodium Foil (Light Tight) is engineered for precise applications in X-ray imaging, spectroscopy, and high-energy experiments. Its high atomic number and radiation resistance make it suitable for X-ray tube anodes, secondary targets in X-ray fluorescence (XRF), and synchrotron radiation applications. The foil’s minimal light leakage and durability under extreme conditions ensure reliability in analytical instruments and biomedical applications. Our expertise enables us to produce pinhole-free foils across a variety of thicknesses. Additionally, rhodium foil functions as a harmonic rejection filter in synchrotron beamlines, selectively blocking unwanted X-ray wavelengths while ensuring high spectral purity. Its conductivity and inertness further support its role in advanced X-ray technology development.
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Material Properties for Precious Metals

Atomic Properties
Element Value
Atomic number 45
Crystal structure Face centred cubic
Electronic structure Kr 4d⁸ 5s¹
Valences shown 2,3,4,5,6
Atomic weight( amu ) 102.9055
Thermal neutron absorption cross-section( Barns ) 150
Photo-electric work function( eV ) 4.6
Atomic radius - Goldschmidt( nm ) 0.134
Ionisation potential( No./eV ) 1/ 7.46
Ionisation potential( No./eV ) 3/ 31.1
Ionisation potential( No./eV ) 2/ 18.1
Mechanical Properties
Element Value
Material condition Hard
Material condition Soft
Poisson's ratio 0.26
Poisson's ratio 0.26
Bulk modulus( GPa ) 276
Bulk modulus( GPa ) 276
Tensile modulus( GPa ) 379
Tensile modulus( GPa ) 379
Hardness - Vickers( kgf mm⁻² ) 300
Hardness - Vickers( kgf mm⁻² ) 120
Tensile strength( MPa ) 1380-2070
Tensile strength( MPa ) 690-760
Yield strength( MPa ) 69-275
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 4.7@20@20°C
Temperature coefficient( K⁻¹ ) 0.0044@0-100°C
Thermal emf against Pt (cold 0C - hot 100C)( mV ) 0.7
Physical Properties
Element Value
Boiling point( C ) 3727
Density( gcm⁻³ ) 12.4@20°C
Thermal Properties
Element Value
Melting point( C ) 1965
Latent heat of evaporation( J g⁻¹ ) 4800
Latent heat of fusion( J g⁻¹ ) 210
Specific heat( J K⁻¹ kg⁻¹ ) 244@25°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 150@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 8.5@0-100°C

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