Investigation of the spall strength of graphite using nano- and picosecond laser pulses

被引：5

作者：

Krasyuk, I. K. ^{[1
]}

Semenov, A. Yu ^{[1
]}

Stuchebryukhov, I. A. ^{[1
]}

Belikov, R. S. ^{[2
]}

Khishchenko, K. V. ^{[2
]}

Rosmej, O. N. ^{[3
]}

Rienecker, T. ^{[3
]}

Schoenlein, A. ^{[4
]}

Tomut, M. ^{[5
]}

机构：

[1] Russian Acad Sci, Prokhorov Gen Phys Inst, Vavilova 38, Moscow 119991, Russia

[2] Russian Acad Sci, Joint Inst High Temp, Moscow 125412, Russia

[3] GSI Helmholtzzentrum Schwerionenforsch, D-64291 Darmstadt, Germany

[4] Goethe Univ Frankfurt, D-60323 Frankfurt, Germany

[5] Tech Univ Darmstadt, D-64289 Darmstadt, Germany

来源：

XXX INTERNATIONAL CONFERENCE ON INTERACTION OF INTENSE ENERGY FLUXES WITH MATTER (ELBRUS 2015) | 2015年 / 653卷

关键词：

NEGATIVE PRESSURES; EQUATIONS; STATE;

D O I：

10.1088/1742-6596/653/1/012002

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Spallation phenomena in graphite targets were investigated experimentally under nano-and picosecond shock-wave action at laser facilities "Kamerton-T" (GPI RAS) and PHELIX (GSI). In the range of strain rates of 1 to 10 mu s(-1) at the first time, data of dynamic tensile strength of the material were obtained. At maximal realized strain rate of 14 mu s(-1), the spall strength value 2.1 GPa has been achieved that is 64% of the theoretical ultimate tensile strength of the graphite. Spallation was observed not only on the backside of the target, but also on its front (irradiated) surface. The morphology of the front and rear surfaces of the targets was studied using the optical and scanning electron microscopy. The structure of the graphite in irradiated area on the facial side as well as in the spallation zone on the rear side of the target was investigated by Raman scattering method. A comparison of the dynamic strength of the graphite with the dynamic strength of a synthetic diamond is done.

引用

页数：7

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