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

Journal Article · Mon Jun 30 00:00:00 EDT 2014 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2014V044N06ABEH015455· OSTI ID:22395855

Abrosimov, S A; Bazhulin, A P; Bol'shakov, A P; Konov, V I; Krasyuk, I K; Pashinin, P P; Ral'chenko, V G; Semenov, A Yu; Sovyk, D N; Stuchebryukhov, I A; Khomich, A A ^[1]; Fortov, V E; Khishchenko, K V ^[2]

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1. A M Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)
2. Joint Institute for High Temperatutes, Russian Academy of Sciences (Russian Federation)

The spallation phenomena in poly- and single-crystal synthetic diamonds have been experimentally investigated. A shockwave 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 λ = 0.527 mm, pulse energy 2.5 J) with an intensity as high as 2 × 10{sup 13} W cm{sup -2}. The maximum diamond spall strength σ* ≈ 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. (extreme light fields and their applications)

• OSTI ID: 22395855
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 44, Issue 6; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
DIAMONDS
LASERS
PULSES
SPALLATION