Generation of negative pressures and spallation phenomena in diamond exposed to a picosecond laser pulse

被引：14

作者：

Abrosimov, S. A. ^{[1
]}

Bazhulin, A. P. ^{[1
]}

Bol'shakov, A. P. ^{[1
]}

Konov, V. I. ^{[1
]}

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

Pashinin, P. P. ^{[1
]}

Ral'chenko, V. G. ^{[1
]}

Semenov, A. Yu. ^{[1
]}

Sovyk, D. N. ^{[1
]}

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

Fortov, V. E. ^{[2
]}

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

Khomich, A. A. ^{[1
]}

机构：

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

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

来源：

QUANTUM ELECTRONICS | 2014年 / 44卷 / 06期

基金：

俄罗斯基础研究基金会;

关键词：

laser radiation; picosecond duration; ablation pressure; shock wave; negative pressure; spallation phenomenon; strain rate; ultimate strength; numerical simulation; synthetic diamond; ABLATION;

D O I：

10.1070/QE2014v044n06ABEH015455

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The spallation phenomena in poly-and single-crystal synthetic diamonds have been experimentally investigated. A shock-wave impact on a target was implemented using a 70-ps laser pulse in the Kamerton-T facility. The ablation pressure of 0.66 TPa on the front target surface was formed by pulsed radiation of a neodymium phosphate glass laser (second harmonic lambda = 0.527 mm, pulse energy 2.5 J) with an intensity as high as 2 x 10(13) W cm(-2). The maximum diamond spall strength sigma* approximate to 16.5 GPa is found to be 24 % of the theoretical ultimate strength. Raman scattering data indicate that a small amount of crystalline diamond in the spallation region on the rear side of the target is graphitised.

引用

页码：530 / 534

页数：5

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