On the electronic specific heat of liquid tungsten.

On the electronic specific heat of liquid tungsten.

Journal of physics. Condensed matter : an Institute of Physics journal (2014-01-07)

V N Korobenko, A D Rakhel

ABSTRACT

Tungsten foil strip sandwiched between two sapphire plates was rapidly heated by an electrical current pulse so that it experienced a two-fold thermal expansion in less than 400 ns under increasing dynamic pressure. The dependence of density on specific enthalpy and pressure was investigated for liquid tungsten using two essentially different diagnostic techniques. Based on a comparison of the results with each other and literature data the systematic uncertainty of the measurements has been estimated. The dependence of density on specific enthalpy along the isobar P = 0.1 MPa has been determined for the entire liquid range. The data have been used to evaluate the constant volume specific heat of liquid tungsten and the electronic contribution to it. It has been shown that the contribution attains more than 40% of the total value of the specific heat.

MATERIALS

Product Number

Brand

Product Description

GF88575777

Tungsten, foil, not light tested, 100x100mm, thickness 0.015mm, 99.95%

GF97979494

Tungsten, foil, 0.2m coil, thickness 0.076mm, coil width 2mm, as rolled, 99.95%

GF47870208

Tungsten, foil, 0.2m coil, thickness 0.016mm, coil width .36mm, as rolled, 99.95%

GF79293921

Tungsten, foil, 100x100mm, thickness 2.0mm, as rolled, 99.95%

GF91269412

Tungsten, foil, 0.2m coil, thickness 0.025mm, coil width .7mm, as rolled, 99.95%

GF24556473

Tungsten, foil, 150x150mm, thickness 0.125mm, as rolled, 99.95%

GF17717968

Tungsten, foil, 0.2m coil, thickness 0.05mm, coil width 2mm, as rolled, 99.95%

GF45743609

Tungsten, foil, 100x100mm, thickness 0.3mm, as rolled, 99.95%

GF17648589

Tungsten, foil, 2m coil, thickness 0.1mm, coil width .6mm, as rolled, 99.95%

GF01371439

Tungsten, foil, 0.5m coil, thickness 0.02mm, coil width .5mm, as rolled, 99.95%

GF99540063

Tungsten, foil, 1m coil, thickness 0.035mm, coil width .5mm, as rolled, 99.95%

GF50997729

Tungsten, foil, 2m coil, thickness 0.1mm, coil width 1.5mm, as rolled, 99.95%

GF83775145

Tungsten, foil, 0.5m coil, thickness 0.016mm, coil width .36mm, as rolled, 99.95%

GF60528157

Tungsten, foil, 1m coil, thickness 0.04mm, coil width 0.7mm, as rolled, 99.95%

GF49097672

Tungsten, foil, 1m coil, thickness 0.2mm, coil width .6mm, as rolled, 99.95%

GF35593555

Tungsten, foil, 0.5m coil, thickness 0.05mm, coil width 2mm, as rolled, 99.95%

GF64306065

Tungsten, foil, 2m coil, thickness 0.035mm, coil width .5mm, as rolled, 99.95%

GF71892591

Tungsten, foil, 1m coil, thickness 0.016mm, coil width .36mm, as rolled, 99.95%

GF82947156

Tungsten, foil, 0.5m coil, thickness 0.025mm, coil width 1mm, as rolled, 99.95%

GF85492884

Tungsten, foil, 1m coil, thickness 0.1mm, coil width 1.5mm, as rolled, 99.95%

GF19348892

Tungsten, foil, 0.5m coil, thickness 0.076mm, coil width 1.5mm, as rolled, 99.95%

GF86013581

Tungsten, foil, 1m coil, thickness 0.025mm, coil width .7mm, as rolled, 99.95%

GF60432207

Tungsten, foil, 1m coil, thickness 0.05mm, coil width .51mm, as rolled, 99.95%

GF63218550

Tungsten, foil, 1m coil, thickness 0.05mm, coil width 2mm, as rolled, 99.95%

GF14930456

Tungsten, foil, not light tested, 100x100mm, thickness 0.01mm, 99.95%

GF86574628

Tungsten, foil, 5m coil, thickness 0.025mm, coil width .7mm, as rolled, 99.95%

GF46938000

Tungsten, foil, light tested, 25x25mm, thickness 0.02mm, 99.95%

GF73055606

Tungsten, foil, light tested, 150x300mm, thickness 0.025mm, as rolled, 99.95%

GF17608529

Tungsten, foil, not light tested, 25x25mm, thickness 0.003mm, 99.95%

GF65283453

Tungsten, foil, 0.5m coil, thickness 0.05mm, coil width .51mm, as rolled, 99.95%