1974
DOI: 10.1063/1.1686822
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Laser heating in the diamond anvil press up to 2000°C sustained and 3000°C pulsed at pressures up to 260 kilobars

Abstract: Samples held at pressures up to 260 kilobar in a diamond anvil pressure cell have been heated to very high temperatures by means of a laser beam introduced through one of the transparent diamond anvils. A 7 J pulsed ruby laser is able to produce temperatures as high as 3000°C in a high pressure sample. A 60 W cw YAG laser is able to produce sustained temperatures up to 2000°C. An optical pyrometer has been used in the latter case to measure the brightness temperature with an accuracy of ±50°C. The ruby laser h… Show more

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Cited by 208 publications
(58 citation statements)
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“…Nd-doped yttrium-aluminum-garnet (YAG) (h = 1.06 txm) lasers, first used by Ming and Bassett [1974], and CO2 lasers (h = 10.6 !•m) [Boehler and Chopelas, 1991] have typical powers of 20 and 150 W, respectively. However, intrinsic power instability of these lasers produced temperature fluctuations of several hundred degrees, a serious problem for accurately measuring phase transitions.…”
Section: Laser Heatingmentioning
confidence: 99%
“…Nd-doped yttrium-aluminum-garnet (YAG) (h = 1.06 txm) lasers, first used by Ming and Bassett [1974], and CO2 lasers (h = 10.6 !•m) [Boehler and Chopelas, 1991] have typical powers of 20 and 150 W, respectively. However, intrinsic power instability of these lasers produced temperature fluctuations of several hundred degrees, a serious problem for accurately measuring phase transitions.…”
Section: Laser Heatingmentioning
confidence: 99%
“…3000 K). Since the birth of the LHDAC in the late 1960s [12,13], the LHDAC technique has been widely used in X-ray diffraction, melting point studies, phase equilibrium studies, and chemical analyses of quenched samples [14 -20]. These studies provided data on phase diagram, equation of state, elasticity, composition, and melting curve of planetary materials.…”
Section: Introductionmentioning
confidence: 99%
“…The starting materials are two synthetic orthopyroxenes with chemical molar compositions of (Mg 0.8 Fe 0.2 )SiO 3 (En80) and (Mg 0.6 Fe 0.4 )SiO 3 (En60), and San Carlos olivine with the composition of (Mg 0.88 Fe 0.12 ) 2 SiO 4 . Experiments were conducted at the 13IDD beamline of the GeoSoilEnviro Consortium for Advanced Radiation Sources and the 16IDB beamline of the High-Pressure Collaborative Access Team at Argonne National Laboratory; both beamlines are optimized for monochromatic x-ray diffraction study of high-P samples with in situ laser heating (11,12). The silicate sample was sandwiched between thin layers of NaCl, which served as thermal insulation during laser heating and as the pressure calibrant (13), placed in a 40-m-diameter sample chamber in a rhenium gasket in a symmetrical diamond anvil cell, raised to specific pressures, heated with yttrium lithium fluoride lasers from both sides, and monitored with x-ray diffraction in situ at high P-T and at ambient T and high P after temperature quench.…”
mentioning
confidence: 99%