Development of Designer Diamond Technology for High Pressure High Temperature Experiments in Support of Stockpile Stewardship Program

Vohra, Yogesh, K.

University of Alabama at Birmingham (UAB)

关键词: Designer Diamonds;    Lawrence Livermore National Laboratory;    Rare Earths;    Stockpiles;    75 Condensed Matter Physics, Superconductivity And Superfluidity;   

DOI  :  10.2172/966447
RP-ID  :  DOE/NA/26168-1
RP-ID  :  FG52-06NA26168
RP-ID  :  966447

美国|英语

来源: UNT Digital Library

【 摘 要 】

The role of nitrogen in the fabrication of designer diamond was systematically investigated by adding controlled amount of nitrogen in hydrogen/methane/oxygen plasma. This has led to a successful recipe for reproducible fabrication of designer diamond anvils for high-pressure high-temperature research in support of stockpile stewardship program. In the three-year support period, several designer diamonds fabricated with this new growth chemistry were utilized in high-pressure experiments at UAB and Lawrence Livermore National Laboratory. The designer diamond anvils were utilized in high-pressure studies on heavy rare earth metals, high pressure melting studies on metals, and electrical resistance measurements on iron-based layered superconductors under high pressures. The growth chemistry developed under NNSA support can be adapted for commercial production of designer diamonds.