Thorium Doped Calcium Fluoride Crystal

SKU: 68761W

$63.95USD Each

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Bring cutting-edge physics to your classroom with a Thorium doped Indigo® fluorite molecular model of a nuclear clock crystal.

Build the crystal structure behind the world’s first operating nuclear clock. Get this high-quality Thorium-doped Calcium Fluoride Orbit model kit for just $63.95. Perfect for advanced physics, materials science, and solid-state chemistry classrooms. In stock and ready to ship. Order now!

Take solid-state chemistry and materials science into the near future. With a minor modification, our Fluorite Crystal Mineral Structure Model (SKU 68761W) can illustrate how thorium doping is the breakthrough behind the world’s first operating nuclear clocks.

The Cochranes of Oxford Orbit system is unique among model styles in having an 8 coordinate grey atom. Educators can use it to physically demonstrate "interstitial doping" and "charge compensation". Simply swap a single grey 8-coordinate Calcium ion with its green counterpart to represent Thorium-229. To maintain electrical neutrality just like a real crystal lattice, remove two neighboring purple tetrahedral fluoride atoms. You can also make the doped site glow in the dark by using our 25mm GlowBonds™.

Indigo Instruments has held inventory of genuine Cochranes of Oxford (Orbit) parts for 30+ years (See Skeletal (Orbit/Minit)) that are compatible with every molecular model we have sold since day 1. This level of quality may appear expensive but no parts support from other vendors costs even more.

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Nuclear Clock & Fluorite Crystal Learning Outcomes

Concept Chemistry & Solid-State Physics Focus Advanced Quantum & Nuclear Physics Focus
Interstitial Doping A green Thorium-229 ion replaces a grey Calcium ion within the host lattice. The host crystal acts as a solid-state "trap" to hold nuclei in a fixed position.
Charge Compensation Electrical neutrality is preserved by removing two neighboring purple tetrahedral Fluoride atoms. Understand how resulting structural lattice vacancies alter localized crystal fields.
Coordination Geometry Observe the fundamental 8:4 coordination framework (grey Calcium surrounded by 8 fluorides). Analyze how atomic shielding within the 8-coordinate site protects the nucleus from external interference.
Crystal Cleavage & Stability Map the 4 clear directions of the fluorite cleavage planes and evaluate overall ionic bonding stability. Connect lattice integrity to thermodynamic resilience under laser spectroscopy and deep UV exposure.
Optical Transparency Link the geometric arrangement to calcium fluoride’s low refractive index and high UV/IR transmission. Explore why this specific bandgap allows laser light to directly manipulate the thorium nucleus.
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