Nuclear adiabatic demagnetization
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Adiabatic demagnetization utilizes the magnetic moment of atomic nuclei. It is possible to cool to ultra-low temperatures of about 10-6 Kelvin, which is lower than the extremely low temperatures achieved by dilution refrigeration. Generally, the spin of copper atomic nuclei is used, and ultra-low temperatures are achieved by cooling using dilution refrigeration while keeping a magnetic field applied, and then removing the magnetic field while maintaining the adiabatic state. Source: About Shogakukan Digital Daijisen Information | Legend |
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原子核の磁気モーメントを利用した断熱消磁。希釈冷凍による極低温よりも低い、10－6ケルビン程度の超低温領域までの冷却が可能。一般に、銅の原子核のスピンが用いられ、磁場をかけたまま希釈冷凍で冷却し、断熱状態を保ったまま磁場を取り除くことで超低温を実現する。
出典 小学館デジタル大辞泉について 情報 | 凡例 |
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