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Akademický článek

Laser pulse-length dependent ablation and shock generation in silicon at 5×10^{14} W/cm^{2} intensities

Autor: M. Bailly-Grandvaux, E. N. Hahn, T. R. Joshi, K. Werellapatha, T. Cordova, R. E. Turner, J. E. Garay, R. B. Spielman, J. K. Wicks, F. N. Beg

Publikováno v: Physical Review Research, Vol 6, Iss 3, p 033053 (2024)

The effect of laser pulse duration on energy coupling into a planar silicon target is investigated in experiments at the OMEGA-EP facility by varying the laser pulse length τ—spanning 3 orders of magnitude from 100 ps to 10 ns—while maintaining

Externí odkaz: https://doaj.org/article/83a4830dab9c4a228b48cc9ca8a6c447

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Akademický článek

Structure and density of silicon carbide to 1.5 TPa and implications for extrasolar planets

Autor: D. Kim, R. F. Smith, I. K. Ocampo, F. Coppari, M. C. Marshall, M. K. Ginnane, J. K. Wicks, S. J. Tracy, M. Millot, A. Lazicki, J. R. Rygg, J. H. Eggert, T. S. Duffy

Publikováno v: Nature Communications, Vol 13, Iss 1, Pp 1-9 (2022)

Using ramp compression, silicon carbide was compressed to pressures of 1.5 terapascals, more than seven times higher than previous work. The results show that large carbon-rich exoplanets would be ~10% less dense than corresponding rocky planets.

Externí odkaz: https://doaj.org/article/1fabdd63f8b34131b959de6f8ec88967

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Akademický článek

Ramp Compression of Germanium Dioxide to Extreme Conditions: Phase Transitions in an SiO_{2} Analog

Autor: D. Kim, I. K. Ocampo, R. F. Smith, F. Coppari, M. Millot, J. K. Wicks, J. R. Rygg, J. H. Eggert, T. S. Duffy

Publikováno v: Physical Review X, Vol 13, Iss 3, p 031025 (2023)

The high-pressure (HP) behavior of dioxides is of interest due to their extensive polymorphism and role as analogs for SiO_{2}, a phase expected to be important in the deep mantles of Earth and terrestrial exoplanets. Here we report on dynamic ramp c

Externí odkaz: https://doaj.org/article/89bc67973cca4989aec0b9b4d3319fff

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Changes in the Management of Patients having Radical Radiotherapy for Lung Cancer during the First Wave of the COVID-19 Pandemic in the UK

Publikováno v: Clinical Oncology (Royal College of Radiologists (Great Britain)

AIMS: in response to the COVID-19 pandemic, guidelines on reduced fractionation for patients treated with curative-intent radiotherapy were published, aimed at reducing the number of hospital attendances and potential exposure of vulnerable patients

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2da65370efacf790245de1d427282551
http://europepmc.org/articles/PMC8552552

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Akademický článek

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Akademický článek

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Akademický článek

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Structure and density of silicon carbide to 1.5 TPa and implications for extrasolar planets

Autor: D. Kim, R. F. Smith, I. K. Ocampo, F. Coppari, M. C. Marshall, M. K. Ginnane, J. K. Wicks, S. J. Tracy, M. Millot, A. Lazicki, J. R. Rygg, J. H. Eggert, T. S. Duffy

Publikováno v: Nature communications. 13(1)

There has been considerable recent interest in the high-pressure behavior of silicon carbide, a potential major constituent of carbon-rich exoplanets. In this work, the atomic-level structure of SiC was determined through in situ X-ray diffraction un

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fb323ab9326a86c4b8c4ee5bdb688c9c
https://pubmed.ncbi.nlm.nih.gov/35477934

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Femtosecond diffraction studies of the sodium chloride phase diagram under laser shock compression

Autor: Vinay Rastogi, Raymond F. Smith, Damian C. Swift, Richard Briggs, Martin G. Gorman, Connor Krill, Amy L. Coleman, Dayne E. Fratanduono, Jon H. Eggert, Cynthia A. Bolme, Federica Coppari, Arianna Gleason, Hae Ja Lee, Philip Heimann, Thomas S. Duffy, June K. Wicks

Publikováno v: Journal of Applied Physics. 132:085901

The phase diagram of sodium chloride (NaCl) under laser shock compression has been studied at Linac Coherent Light Source (LCLS) at the x-ray free-electron laser facility. Both solid–solid (B1 → B2) and solid–liquid (B2 → liquid) transitions

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::afeaadf9ce1ce81c0aa6a65725e846fe
https://doi.org/10.1063/5.0094894

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Experimental and theoretical examination of shock-compressed copper through the fcc to bcc to melt phase transitions

Autor: Melissa Sims, Richard Briggs, Travis J. Volz, Saransh Singh, Sebastien Hamel, Amy L. Coleman, Federica Coppari, David J. Erskine, Martin G. Gorman, Babak Sadigh, Jon Belof, Jon H. Eggert, Raymond F. Smith, June K. Wicks

Publikováno v: Journal of Applied Physics. 132:075902

Recent studies show a face-centered cubic (fcc) to body-centered cubic (bcc) transformation along the shock Hugoniot for several metals (i.e., Cu, Au, and Ag). Here, we combine laser-shock compression of Cu foils on nanosecond timescales with in situ

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::66dac30aa62822e8ec182c5fca48df94
https://doi.org/10.1063/5.0088607

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