Shock-compressed silicon: Hugoniot and sound speed up to 2100 GPa

Henderson, B. J.; Marshall, M. C.; Boehly, T. R.; Paul, R.; McCoy, Chad; Hu, Suxing; Polsin, Danae; Crandall, Linda; Huff, Margaret; Chin, D. A.; Ruby, J. J.; Gong, Xinyi; Fratanduono, D. E.; Eggert, J. H.; Rygg, J. R.; Collins, G. W.

doi:10.1103/physrevb.103.094115

Cited by 19 publications

(3 citation statements)

References 78 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In direct laser drive shock wave compression, the flexibility of adjusting laser pulses energy, duration, and the ability to control temporal and spatial intensity distribution, allow precisely controlling the shock wave loading to probe different thermodynamic spaces. These studies uncover the high-pressure equation of state and isentropic sound speed up to 2.1 TPa 29 . The phase transitions into high-pressure polymorphs are evident from the velocity interferometry.…”

Section: Mainmentioning

confidence: 82%

“…Studying transformation of Si under megabar pressures (and in some cases additional high temperature) was performed in static conditions, in diamond anvil cell (DAC) 5 , and in dynamic conditions, using strong shock waves generated by explosives and Mega-Joule-class nanosecond pulse lasers 29 . Applying static pressure gives the possibility for in situ study of the phase transitions at elevated pressure.…”

Section: Mainmentioning

confidence: 99%

See 1 more Smart Citation

High-pressure polymorphs in bulk silicon formed at relativistic laser intensity

Rodé

Rapp

Matsuoka³

et al. 2022

Preprint

View full text Add to dashboard Cite

Silicon polymorphs with exotic electronic and optical properties have recently attracted significant attention due to the wide range of useful bandgap characteristics1,2,3,4. They are typically formed by high pressure techniques, which put limitations on the sample volumes and their crystal structure5,6,7,8,9,10. This constitutes a major obstacle to study these polymorphs and their incorporation into existing technology. Here, we report on a new approach to create unusual crystal structures deep into the bulk of a silicon wafer by MeV-electrons generated by laser irradiation at ultra-relativistic intensity above ~2x10^18 W/cm2. Strong repulsion between the electrons, their branching due to self-generated magnetic field and nonlinear relativistic effects11,12,13 enhance deposition of their energy deep into the target and form high energy density conditions leading to ionisation, followed by fast quenching and restructuring into new crystal arrangements14,15,16,17,18. Analysis by Raman spectroscopy, synchrotron X-ray diffraction, and high-resolution transmission electron microscopy of nanocrystals formed in the irradiated samples provide compelling evidence of the formation of metastable Si phases. The unexplored domain of material transformations exposed to laser-produced MeV-electrons opens new pathways for the conversion into new crystal structures applicable to a wide range of materials at considerably larger quantity, all preserved for further studies and exploitation.

show abstract

Section: Mainmentioning

confidence: 82%

Section: Mainmentioning

confidence: 99%

High-pressure polymorphs in bulk silicon formed at relativistic laser intensity

Rodé

Rapp

Matsuoka³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…To quantitatively analyze shock wave propagation in MLG–PE composites, we examined the Hugoniot relationship between the particle speed ( U p ) and shock speed ( U s ), as shown in eq U s = S U p + C o …”

Section: Results and Discussionmentioning

confidence: 99%

Superior Protection Conferred by Multi-Layered Graphene–Polyethylene Nanocomposites under Shock Loading

Singh,

Ranganathan

2023

ACS Appl. Eng. Mater.

View full text Add to dashboard Cite

With the emerging need for lightweight, protective materials such as armor, polymer nanocomposites are being continuously developed with tailored properties to enhance energy-absorbing and dissipating capacity. Developing strong and tough materials is of paramount importance within space and weight constraints. Understanding the high-strain rate deformation mechanisms, shock propagation, energy dissipation, and failure is a critical design consideration for armor materials. High-performance natural materials, such as nacre, show remarkable strength and toughness due to their hierarchical layered architecture across multiple length scales. However, such natural materials often experience high impact loads and thus offer good design criteria for artificial armor materials. Here, we report on the shock response of multilayered graphene polyethylene nanocomposites through large-scale coarsegrained molecular dynamics simulations. Simulations for multiple piston speeds (0.3−3.5 km/s) were conducted to study shock propagation, dissipation, and eventual failure. The multilayered organization of graphene significantly increases the impact strength of the composites, as reflected in the spallation strength of the composites. This study also shows the effect of physical grafting of polyethylene chains on shock dissipation and mitigation. The spall strength of the grafted MLG−PE is approximately 10−40% greater than that of its corresponding counterparts. We also elucidated the underlying molecular mechanisms involved in shock deformation. The foremost mechanisms driving dissipation in the grafted composite are the intricate scattering of shock waves at the interface, a substantial difference in the acoustic impedance between graphene and polyethylene, and the occurrence of visco-plastic deformation involving numerous stress-transfer sites. Our research revealed that introducing grafted polymer chains to the fillers results in significant morphological alterations in the polymers, primarily attributed to bond compression, stretching, and bending. The study offers promising design strategies for designing high-performance lightweight materials.

show abstract

Measurement of dense plasma temperature of the shock‐compressed silicon

Nikolaev

Kulish

Dudin

et al. 2021

Contributions to Plasma Physics

View full text Add to dashboard Cite

Measurements of the brightness temperature and compressibility of a dense silicon plasma formed by powerful shock waves (SWs) passing through a single‐crystal sample have been carried out. Plane SWs were created using an explosive technique: the traditional plane acceleration of a steel driver plate made it possible to obtain pressures in silicon up to 133 GPa, and the use of “Mach” cumulative generators realized the pressures up to 510 GPa. The shock Hugoniot of silicon was determined by the impedance matching with α‐quartz as the reference. The intensity of emitted thermal radiation was measured in the infrared range λ ∼ 1.5 μm, where silicon is optically transparent, and in the visible range of the spectrum. A significant (up to five times) understatement of the measured values of the brightness temperature in comparison with the values calculated by the equation of state was found. Taking into account the reflective properties of the SW in silicon does not lead to an agreement with the experiment. The estimates of relaxation processes behind the shock front suggest the presence of a zone of the establishment of ionization equilibrium with a width of ∼10 μm.

show abstract

Shock-compressed silicon: Hugoniot and sound speed up to 2100 GPa

Cited by 19 publications

References 78 publications

High-pressure polymorphs in bulk silicon formed at relativistic laser intensity

High-pressure polymorphs in bulk silicon formed at relativistic laser intensity

Superior Protection Conferred by Multi-Layered Graphene–Polyethylene Nanocomposites under Shock Loading

Measurement of dense plasma temperature of the shock‐compressed silicon

Contact Info

Product

Resources

About