CAJ | 학술논문

研制了柱面加载压缩的液氮温区低温靶，该低温靶以液氮为冷源将样品室冷却到所需的温度，并保持该温度，然后对注入的样品气体液化，为柱面等熵压缩提供条件。根据加载方式和保温时间要求确定了低温靶的初步结构和尺寸，在此基础上分析计算了靶体的漏热、样品室的温度分布和保温时间，对结构尺寸进行优化。在自行搭建的实验台上对柱面压缩液氮低温靶的漏热、降温、温度调控及不同环境条件下的保温特性、样品气体（氩气）液化过程的温度变化进行了试验。试验结果表明：柱面压缩液氮低温靶的温度可在一定范围进行调节控制；借助样品室顶部针阀内部的温度计，结合分批充注样品气体的方法可以很好地观测样品室液体充满状况；成功地将氩气液化，充满样品室；断开冷源和真空泵后，样品室温度可以维持93 min。
연제료주면가재압축적액담온구저온파，해저온파이액담위랭원장양품실냉각도소수적온도，병보지해온도，연후대주입적양품기체액화，위주면등적압축제공조건。근거가재방식화보온시간요구학정료저온파적초보결구화척촌，재차기출상분석계산료파체적루열、양품실적온도분포화보온시간，대결구척촌진행우화。재자행탑건적실험태상대주면압축액담저온파적루열、강온、온도조공급불동배경조건하적보온특성、양품기체（아기）액화과정적온도변화진행료시험。시험결과표명：주면압축액담저온파적온도가재일정범위진행조절공제；차조양품실정부침벌내부적온도계，결합분비충주양품기체적방법가이흔호지관측양품실액체충만상황；성공지장아기액화，충만양품실；단개랭원화진공빙후，양품실온도가이유지93 min。
A liquid nitrogen cryogenic target for cylindrical compression has been designed and tested.The goal is to cool the sample from room temperature to the required low temperature, and maintain the temperature to liquefy the sample gas, providing the conditions for cylindrical isentropic compression.Design of structures was preliminarily completed accord-ing to the requirement of the compression mode and liquid sample preservation time, and optimized through the thermal anal-ysis of the target.A test bed was built to measure the heat loss, cooling time, temperature control and keeping characteristics of the target under different conditions .The results show that the target temperature can be adjusted in a certain range accord-ing to the need.With a thermometer set inside the needle valve on top of the sample space and the repeatly partial filling method of the sample gas, it can be well observed that the liquefied sample is full of the sample space or not.The target suc-ceeded in cooling the sample gas argon and the temperature keeping time can reach 93 minutes even when cold liquid nitrogen source and vacuum pump was disconnected .