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Rubidium-85 (⁸⁵Rb).jpg

Rubidium-85 (⁸⁵Rb) Suppliers in China - Stable Isotope from Trusted Factory for NMR Research

Rubidium-85 (⁸⁵Rb) is a stable isotope of rubidium that boasts a natural abundance of 72.17% and an atomic weight of 84.9118 u. As a nucleus with a nuclear spin of I=5/2, ⁸⁵Rb features a nuclear magnetic moment of 1.353 μₙ, making it an excellent candidate for nuclear magnetic resonance (NMR) research. Unlike its radioactive counterpart, ⁸⁷Rb, ⁸⁵Rb remains stable and non-decaying in the natural environment. As a leading supplier in China, our factory produces high-quality rubidium isotopes, including ⁸⁵Rb, to meet the needs of scientific research and industrial applications. Explore our offerings to find reliable sources of rubidium isotopes for your projects
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    ⚛️ Atomic Physical Properties

    ⁸⁵Rb ground state electronic configuration: [Kr]5s¹
    It features a significant atomic hyperfine structure:
    D₁ line (794.6 nm): 5²S₁/₂→5²P₁/₂ transition
    D₂ line (780.0 nm): 5²S₁/₂→5²P₃/₂ transition

    Its hyperfine splitting frequency (3.035 GHz) is about 50% lower than that of ⁸⁷Rb. This difference is widely used in isotope selective laser cooling technology.

    💻 Quantum technology application

    🔬 1. Cold atom physics

    As a fermion isotope (nuclear spin half-integer), the Bose-Fermi hybrid system composed of ⁸⁵Rb and ⁸⁷Rb is an important platform for studying quantum degenerate gas interactions. It is used to simulate the Hubbard model in optical tweezers experiments.

    📡 2. Quantum information

    The magnetically insensitive state of ⁸⁵Rb (m_F=0) can be used as a coherent state storage carrier, and the decoherence time can reach several seconds.

    📐 3. Precision measurement

    Use the ⁸⁵Rb/⁸⁷Rb isotope shift (1.2 GHz) to calibrate the laser frequency standard.

    ⚙️ Industrial and scientific research applications

    • Atomic filter: ⁸⁵Rb vapor chamber is used to make narrow-band (<0.1 nm) optical filters to suppress background noise in laser communications.
    • Isotope tracing: Enrichment of ⁸⁵Rb labeled compounds to study the function of potassium ion channels in organisms.
    • Nuclear magnetic resonance: ⁸⁵Rb NMR (frequency 16.5 MHz at 2.35 T) is used to study the local structure of rubidium compounds.

    ⚗️ Isotope separation technology

    The main methods for obtaining high-purity ⁸⁵Rb from natural rubidium are:

    1. Electromagnetic method

    Mass spectrometry separation (purity>99.9%)

    2. Laser method

    Using the unique absorption line of ⁸⁵Rb (such as 780.241 nm)

    3. Chemical exchange method

    Based on the isotope fractionation effect of Rb crown ether complex

    🛡️ Safety and operation

    As a stable isotope, ⁸⁵Rb has no radioactive hazards, but the metal form needs to be handled according to the safety regulations of alkali metals (moisture-proof and fire-proof). Its compounds are less toxic (LD₅₀>5 g/kg).

    📝 Conclusion

    ⁸⁵Rb has unique value in quantum simulation, precision measurement and spectroscopy technology due to its stable nuclear properties and rich energy level structure. As the "stable partner" of ⁸⁷Rb, the two together constitute the technical cornerstone of the rubidium isotope application system, and continue to promote the frontier development of cold atom physics and quantum technology.

    ❓ Frequently Asked Questions

    What is the ground state electronic configuration of ⁸⁵Rb?
    ⁸⁵Rb has a ground state electronic configuration of [Kr]5s¹ and features a significant atomic hyperfine structure, including D₁ and D₂ transitions.
    How is ⁸⁵Rb utilized in laser cooling applications?
    Its hyperfine splitting frequency (3.035 GHz) is approximately 50% lower than that of ⁸⁷Rb. This specific physical difference is widely utilized in isotope selective laser cooling technologies.
    What are the primary quantum technology applications of ⁸⁵Rb?
    It is primarily used in cold atom physics (Bose-Fermi hybrid systems and Hubbard model simulations), quantum information (coherent state storage with decoherence times of several seconds), and precision measurement (laser frequency calibration via isotope shift).
    Which separation methods are used to get high-purity ⁸⁵Rb?
    High-purity ⁸⁵Rb is obtained from natural rubidium through three main methods: electromagnetic separation (achieving purity >99.9%), laser separation (using unique absorption lines like 780.241 nm), and chemical exchange methods using crown ether complexes.
    Are there any radioactivity or toxicity concerns with ⁸⁵Rb?
    No, ⁸⁵Rb is a stable isotope and does not pose radioactive hazards. Its compounds exhibit low toxicity (LD₅₀>5 g/kg). However, metallic rubidium must be handled carefully under alkali metal safety protocols (kept moisture-proof and fire-proof).

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