Gas encapsulation technology for large volume press  

作　　者：Minghao Du Duanwei He 杜明浩;贺端威(Institute of Atomic and Molecular Physics,Sichuan University,Chengdu 610065,China)

机构地区：[1]Institute of Atomic and Molecular Physics,Sichuan University,Chengdu 610065,China

出　　处：《Chinese Physics B》2024年第11期94-97,共4页中国物理B（英文版）

基　　金：supported by the National Key R&D Program of China(Grant No.2023YFA1406200).

摘　　要：For samples in the gaseous state at room temperature and ambient pressure,mature technology has been developed to encapsulate them in a diamond anvil cell(DAC).However,the large volume press(LVP)can only treat samples with starting materials in solid or liquid form.We have achieved stable encapsulation and reaction treatment of carbon dioxide in a centimeter sized sample chamber for a long time(over 10 min)under conditions of temperature higher than 1200℃ and pressure over 5 GPa through the use of integrated low-temperature freezing and rapid compression sealing method for LVP cell assemblies.This technology can also be applied to the packaging of other gaseous or liquid samples,such as ammonia,sulfur dioxide,water,etc.in LVP devices.

关 键 词：large volume press gas encapsulation LOW-TEMPERATURE 

分 类 号：O56[理学—原子与分子物理]