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Optoacoustic study of laser-induced near-critical states of thin aluminum films

A.A. Karabutov$^{1,2}$, A.G. Kaptilniy$^3$, A.Yu. Ivochkin$^4$, D.M. Ksenofontov$^5$, A.D. Trofimov$^5$

Moscow University Physics Bulletin 2013. 68. N 5. P. 383

  • Article
Annotation

The results of the optoacoustic study of aluminum states within a temperature range of 3–14 kK and a pressure range of 0.1–4 kbar were considered. These high-energy states were achieved by heating a submicron metal film confined by a transparent dielectric via nanosecond laser pulses with a fluence of up to 11 J/cm$^2$. The dynamics of the temperature, pressure, and reflectivity of aluminum was studied at a nanosecond time resolution.

Received: 2013 June 5
Approved: 2013 October 25
PACS:
81.30.Bx Phase diagrams of metals, alloys, and oxides
64.60.Fr Equilibrium properties near critical points, critical exponents
Authors
A.A. Karabutov$^{1,2}$, A.G. Kaptilniy$^3$, A.Yu. Ivochkin$^4$, D.M. Ksenofontov$^5$, A.D. Trofimov$^5$
$^1$International Laser Center, Moscow State University, Moscow, 119991 Russia
$^2$Institute of Problems of Laser and Information Technologies, Russian Academy of Sciences, ul. Svyatoozerskaya 1, Shatura, Moscow oblast, 140700 Russia
$^3$Joint Institute for High Temperatures, Russian Academy of Sciences, ul. Izhorskaya 13/2, Moscow, 125412 Russia
$^4$Prokhorov General Physics Institute, Russian Academy of Sciences, ul. Vavilova 38, Moscow, 119991 Russia
$^5$Department of General Physics and Wave Processes, Faculty of Physics, Moscow State University, Moscow, 119991 Russia
Issue 5, 2013

Moscow University Physics Bulletin

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