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- Title
Heavy-ion beam heated tantalum and tungsten near melting.
- Authors
Nikolaev, Dmitry N.; Fedenev, Alexander A.; Fertman, Alexander D.; Golubev, Alexander A.; Hoffmann, Dieter H. H.; Hug, Alexander; Ionita, Bogdan; Kantsyrev, Alexey V.; Khudomyasov, Andrey V.; Kulish, Mikhail I.; Ling, Johannes; Markov, Nikolai; Mintsev, Viktor B.; Pyalling, Alexey A.; Shilkin, Nikolai S.; Ternovoi, Vladimir Ya.; Turtikov, Vladimir I.; Udrea, Serban; Varentsov, Dmitry V.; Weyrich, Karin
- Abstract
At the GSI Helmholtzzentrum für Schwerionenforschung GmbH (Darmstadt, Germany) intense focused beams of energetic heavy ions are used to generate high-energy-density states in matter [I]. In recent experiments, initially solid tanlalum and tungsten samples (50-901tin thick foils) were uniformly heated in a quasi-isobaric way by a microsecond ion-beam pulses. The temperature of a sample has been observed by a fast multi-channel optical pyrometer during and after the heating. The isobaric heat capacity of the melted metals as well as the enthalpy of fusion have been obtained from the temperature - enthalpy dependence, calculated from measured temperature-time data. A good measurement statistics has been achieved by carrying out a large number of the same experiments with identical targets. The obtained experimental results for liquid tantalum and tungsten heated up to 5000 K are presented and discussed.
- Subjects
TUNGSTEN; TANTALUM; PYROMETERS; HEAVY ions; ENTHALPY; ION bombardment
- Publication
High Temperatures - High Pressures, 2011, Vol 40, Issue 3/4, p281
- ISSN
0018-1544
- Publication type
Article