Characteristics of urea under high pressure and high temperature
Fang Shuai, Ma Hong-An †, Guo Long-Suo, Chen Liang-Chao, Wang Yao, Ding Lu-Yao, Cai Zheng-Hao, Wang Jian, Jia Xiao-Peng ‡
       

Experimental schematic diagram; 1: conductive steel ring; 2: copper sheet; 3: graphite heater; 4: liner tube; 5: small plug; 6: urea; 7: insulator; 8: steel sleeve; 9: large plug; 10: pyrophyllite.