caa a22 4500 465755739 CHVBK 20180323111846.0 cr unu---uuuuu 170327e19900701xx s 000 0 eng 10.1007/BF01184343 doi (NATIONALLICENCE)springer-10.1007/BF01184343 Ohse R. European Institute for Transuranium Elements, Commission of the European Communities, Joint Research Center, Karlsruhe Establishment, Postfach 2340, D-7500, Karlsruhe, Germany aut Extension of thermophysical and thermodynamic property measurements by laser pulse heating up to 10,000 K. I. Under pressure [Elektronische Daten] [R. Ohse] The necessity for increased high-temperature data reliability and extension of thermophysical property measurements up to 5000 K and above are discussed. A new transient-type laser-autoclave technique (LAT) has been developed to extend density and heat capacity measurements of high-temperature multicomponent systems far beyond their melting and boiling points. Pulsed multibeam laser heating is performed in an autoclave under high inert gas pressure to eliminate evaporation. The spherical samples are positioned by containment-free acoustic levitation regardless of their conductive or magnetic properties. Temperature, spectral and total emittances are determined by a new microsecond six-wavelength pyrometer coupled to a fast digital data acquisition system. The density is determined by high resolution microfocus X-ray shadow technique. The heat capacity is obtained from the cooling rate. Further applications are a combination of the laser-autoclave with splat cooling techniques for metastable structure synthesis and amorphous metals research and an extension of the LAT for the study of critical phenomena and the measurement of critical-point temperatures. Plenum Publishing Corporation, 1990 acoustic levitation nationallicence autoclave technique nationallicence density nationallicence emissivity nationallicence heat capacity nationallicence high temperatures nationallicence laser pulse heating nationallicence pyrometry nationallicence thermal expansion nationallicence transient pulse heating nationallicence X-ray shadow technique nationallicence International Journal of Thermophysics Kluwer Academic Publishers-Plenum Publishers 11/4(1990-07-01), 753-769 0195-928X 11:4<753 1990 11 10765 https://doi.org/10.1007/BF01184343 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01184343 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Ohse R. European Institute for Transuranium Elements, Commission of the European Communities, Joint Research Center, Karlsruhe Establishment, Postfach 2340, D-7500, Karlsruhe, Germany aut NATIONALLICENCE 773 0- International Journal of Thermophysics Kluwer Academic Publishers-Plenum Publishers 11/4(1990-07-01), 753-769 0195-928X 11:4<753 1990 11 10765 Metadata rights reserved Springer special CC-BY-NC licence nationallicence SWISSBIB 465755607 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer