DOI:10.1068/htwu586 Determination of liquid ^ vapour phase boundaries by a dynamic experimental method
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Abstract
Abstract. Shock compression and the following expansion into helium were used to generate the boiling of porous nickel. The brightness temperature and velocity of expansion were measured by a fast multichannel optical pyrometer. Gas dynamic peculiarities of expansion in the final pressure range below 0.4 GPa were studied. It has been proved that a shock rarefaction wave is formed under expansion when final states of the sample are inside the two-phase region. The fast heating of tungsten by multiple shocked helium in the process of acceleration of tungsten foil at dynamically formed isobaric conditions is proposed as a new way for generating nearcritical-point states of liquid ^ vapour phase transition. Additionally, an estimation of the critical point data of tungsten is made.