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    AI Overview
    High-purity Germanium (HPGe) ingots are specialized, ultra-pure semiconductor materials (typically >
    99.9999
    %
     purity) used to produce detector-grade single crystals for high-resolution gamma-ray spectrometry. These ingots are grown using zone-refining techniques to eliminate impurities that trap charge carriers, ensuring precise energy resolution in the resulting
    Pcap P
    𝑃
    -type or
    Ncap N
    𝑁
    -type detectors. 
    Key Aspects of Ge Ingots for Spectrometry: 
    • Production: HPGe ingots are created by multiple zone-refining passes to achieve the necessary high purity, often characterized by low Electro-Physical Parameters (EPD) and the absence of large-angle grain boundaries or twins.
    • Detector-Grade Quality: These monocrystalline ingots are essential for manufacturing detectors that offer superior resolution (
      <0.1
      %
      ) compared to scintillators.
    • Applications: The refined germanium crystals are used in coaxial HPGe detectors to analyze gamma-ray emissions, essential for nuclear, industrial, and environmental analysis.
    • Size Capability: Modern technology allows for large-diameter ingot growth (e.g.,
      110
      −120
      mm
      ), enabling production of high-efficiency detectors.       
    For specialized requirements, such as low-noise operation in PET scans or environmental monitoring, the ingots must maintain specific, high-purity standards. 
    • High Purity 5n Zone-Refined Germanium Ingot
      Germanium ingot is a high-purity metal material with germanium element as its core, with the chemical symbol Ge. It has a wide ran...
      Anhui Fitech Material Co.,Ltd
    • GE The Germanium Spectrometer - Department of Physics
      Germanium spectrometers are the highest resolution gamma-ray detectors in existence, and they are used extensively for both basic ...
      University of Toronto
    • Procedure for gamma-ray spectrometry measurements for ...
      Jan 19, 2024 — The HPGe detectors are used for activity (as Bq), emission rates (as gammas/sec) and impurity measurements of gamma-ray emitting r...
      National Institute of Standards and Technology (.gov)
    • Production of High-Purity Germanium Ingots for Detector ...
      This sweeping operation is repeated many times until the impurities are concentrated at one end of the ingot. This final end is th...
      ResearchGate
    • Spectrometric performance of a HPGe semi-planar detector ...
      Conclusion. Thus, the developed technology for the growth of HPGe ingots with a diameter of 110–120 mm ensures a high quality of t...
      ScienceDirect.com
    • Research 416: Project Highlights Video
      Jul 26, 2022 — hello my name is Luis Leonro associate professor in the school of physics at University College Dublin. and lead researcher on an ...
      2m
      YouTube·EPA Ireland
    • Monocrystalline Germanium (Ge) Ingot Crystal with Low EPD
      Oct 7, 2021 — Monocrystalline Germanium (Ge) ingot is provided with P type by PAM-XIAMEN. Germanium crystal does not contain large-angle grain b...
      xiamen powerway
    • Lab Experiment 7: High-Resolution Gamma-Ray ...
      High-purity Germanium (HPGe) detectors. Germanium detectors are semiconductor diodes having a p-i-n structure (P-type contact, int...
      Mirion
    • High Purity Germanium Metal Ingot - Alibaba.com
      Air Quality: Dust and particulate matter from mining and processing can affect air quality and human health in surrounding communi...
      Alibaba.com
    • High Purity 5n Zone-Refined Germanium Ingot
      Germanium ingot is a high-purity metal material with germanium element as its core, with the chemical symbol Ge. It has a wide ran...
      Anhui Fitech Material Co.,Ltd
    • GE The Germanium Spectrometer - Department of Physics
      Germanium spectrometers are the highest resolution gamma-ray detectors in existence, and they are used extensively for both basic ...
      University of Toronto
    • Procedure for gamma-ray spectrometry measurements for ...
      Jan 19, 2024 — The HPGe detectors are used for activity (as Bq), emission rates (as gammas/sec) and impurity measurements of gamma-ray emitting r...
      National Institute of Standards and Technology (.gov)
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    Web results

    Lab Experiment 7: High-Resolution Gamma-Ray ...


    Mirion
    https://www.mirion.com › Discover › Knowledge Hub
    Mirion
    https://www.mirion.com › Discover › Knowledge Hub
    Purpose: To demonstrate the measurement of gamma-ray energies with high resolution provided by a High-purity Germanium (HPGe) detector.Read more

    Gamma-ray Spectrometry using Germanium ...


    ENVRADDB
    https://www.envraddb.go.jp › sites › No.7_E.pdf
    ENVRADDB
    https://www.envraddb.go.jp › sites › No.7_E.pdf
    PDF
    Gamma-ray (γ-ray) spectrometry using a germanium semiconductor detector has been widely used as the main method to analyze radioactivity in γ-ray-emitting ...Read more
    313 pages
    Missing: ingots ‎| Show results with: ingots

    A chunk of high purity Germanium crystal from a broken ...


    Facebook · I Take Pictures of Electronic Parts
    40+ comments · 1 year ago
    Facebook · I Take Pictures of Electronic Parts
    40+ comments · 1 year ago
    Germanium is being used for gamma ray spectrometry, because with Ge semiconductors, the band gap is smaller than with Si semiconductors. Ge ...Read more
    Top answer: It is approx. 1 1/2 inch in diameter. Germanium is being used for gamma ray spectrometry, ...

    Production of High-Purity Germanium Ingots for Detector ...


    ResearchGate
    https://www.researchgate.net › ... › Ingot
    ResearchGate
    https://www.researchgate.net › ... › Ingot
    Many steps are required convert bulk germanium into a gamma-ray spectrometer. The electronic-grade polycrystalline germanium starting material is zone ...Read more

    Spectrometric performance of a HPGe semi-planar detector ...


    ScienceDirect.com
    https://www.sciencedirect.com › article › abs › pii
    ScienceDirect.com
    https://www.sciencedirect.com › article › abs › pii
    by R Nurgalejev · 2021 · Cited by 10 — Detectors based on high purity germanium (HPGe) crystals are the indisputable leaders among all types of gamma-ray detectors, providing excellent energy ...Read more

    GE The Germanium Spectrometer - Department of Physics


    University of Toronto
    https://www.physics.utoronto.ca › apl › ge › ge
    University of Toronto
    https://www.physics.utoronto.ca › apl › ge › ge
    PDF
    The energy of gamma rays can be measured in Germanium detectors because the energy of a photon can be transferred to electrons. Low energy gamma rays may be ...Read more
    16 pages
    Missing: ingots ‎| Show results with: ingots

    High-purity silicon detector vs HPGe for gamma-spectroscopy


    Physics Stack Exchange
    https://physics.stackexchange.com › questions › high-p...
    Physics Stack Exchange
    https://physics.stackexchange.com › questions › high-p...
    Jul 16, 2019 — higher density (Si: 2.33 g/cm3; Ge: 5.32 g/cm3) leads to better efficiency for gamma radiation; higher mobility for electrons (Si: 2.1×104 c ...Read more
    3 answers  ·  Top answer: Silicon is used for various kinds of semiconductor diode detectors, e.g. as Si(Li) for gamma ...

    Monocrystalline Germanium (Ge) Ingot Crystal with Low EPD


    xiamen powerway
    https://www.powerwaywafer.com › News
    xiamen powerway
    https://www.powerwaywafer.com › News
    Single crystal germanium ingot includes solar-grade, infrared-grade and detector-grade germanium for semiconductor, IR optics and γ radiation detector.

    Procedure for gamma-ray spectrometry measurements for ...


    National Institute of Standards and Technology (.gov)
    https://www.nist.gov › document
    National Institute of Standards and Technology (.gov)
    https://www.nist.gov › document
    PDF
    Jan 19, 2024 — The HPGe detectors are used for activity (as Bq), emission rates (as gammas/sec) and impurity measurements of gamma-ray emitting radionuclides.Read more
    Missing: ingots ‎| Show results with: ingots

    High Purity 5n Zone-Refined Germanium Ingot


    Anhui Fitech Material Co.,Ltd
    https://www.fitechem.com › Metallurgy
    Anhui Fitech Material Co.,Ltd
    https://www.fitechem.com › Metallurgy
    Germanium as a detector material · Thermal conductivity of germanium ingots · Ge ingots for gamma-ray spectrometry · Germanium ingot slicing techniques.Read more
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