PMID- 32486755
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20200603
IS  - 1089-7623 (Electronic)
IS  - 0034-6748 (Linking)
VI  - 91
IP  - 5
DP  - 2020 May 1
TI  - A new type of hydrothermal diamond-anvil cell with cooling system.
PG  - 053104
LID - 10.1063/1.5143596 [doi]
AB  - A new type of hydrothermal diamond-anvil cell (HDAC-VII) and its accompanied 
      cooling system were designed. The design of HDAC-VII in which the three posts 
      work simultaneously as guideposts and screw posts greatly shortened the 
      horizontal size of HDAC compared with older types. It provides more open space 
      and shorter distance to analyze and observe the sample chamber from side access. 
      Moreover, four ports were used to connect the upper and lower spaces between 
      windows and anvils, so mixed gas (Ar + H(2)) can pass through both of them. In 
      the heating experiments, the mixed gas prevents diamond anvils and other parts 
      from being oxidized as well as cooling the observing windows. Dry gas can be 
      passed through those spaces during cooling, preventing condensation on the table 
      faces of anvils and the observing windows. The cooling system can cool the sample 
      chamber to -170  degrees C with an accuracy of +/-0.5  degrees C by using a nitrogen stream cooled 
      through a stainless steel coil immersed in a liquid nitrogen Dewar. The heating 
      rates while reheating a frozen sample can be controlled to be 0.1  degrees C/min with a 
      temperature fluctuation of 0.1  degrees C. These improvements extend the HDAC 
      applications especially in low temperature conditions. For example, (1) we 
      measured the salinities of NaCl-H(2)O loaded in the sample chamber, (2) we 
      observed the ice I and VI-melting process and correspondingly calculated the 
      density of water in the sample chamber, and (3) we performed lepidolite 
      crystallization in an aqueous solution with 10 wt. % NaCl to simulate its natural 
      forming conditions.
FAU - Li, Jiankang
AU  - Li J
AUID- ORCID: 0000000169638000
AD  - MNR Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral 
      Resources, Chinese Academy of Geological Sciences, Beijing 100037, China.
FAU - Chou, I-Ming
AU  - Chou IM
AUID- ORCID: 0000000152336479
AD  - CAS Key Laboratory of Experimental Study Under Deep-sea Extreme Conditions, 
      Institute of Deep-Sea Science and Engineering, Chinese Academy of Sciences, 
      Sanya, Hainan 572000, China.
FAU - Bassett, W A
AU  - Bassett WA
AD  - Department of Earth and Atmospheric Sciences, Cornell University, Ithaca, New 
      York 14853, USA.
FAU - Wang, Xian
AU  - Wang X
AD  - State Key Laboratory of Geological Processes and Mineral Resources, China 
      University of Geosciences (Beijing), Beijing 100083, China.
LA  - eng
PT  - Journal Article
PL  - United States
TA  - Rev Sci Instrum
JT  - The Review of scientific instruments
JID - 0405571
SB  - IM
EDAT- 2020/06/04 06:00
MHDA- 2020/06/04 06:01
CRDT- 2020/06/04 06:00
PHST- 2020/06/04 06:00 [entrez]
PHST- 2020/06/04 06:00 [pubmed]
PHST- 2020/06/04 06:01 [medline]
AID - 10.1063/1.5143596 [doi]
PST - ppublish
SO  - Rev Sci Instrum. 2020 May 1;91(5):053104. doi: 10.1063/1.5143596.