Zobrazeno 1 - 10
of 218
pro vyhledávání: '"Heighway, P"'
Autor:
Crépisson, Céline, Amouretti, Alexis, Harmand, Marion, Sanloup, Chrystèle, Heighway, Patrick, Azadi, Sam, McGonegle, David, Campbell, Thomas, Chin, David Alexander, Smith, Ethan, Hansen, Linda, Forte, Alessandro, Gawne, Thomas, Lee, Hae Ja, Nagler, Bob, Shi, YuanFeng, Fiquet, Guillaume, Guyot, François, Makita, Mikako, Benuzzi-Mounaix, Alessandra, Vinci, Tommaso, Miyanishi, Kohei, Ozaki, Norimasa, Pikuz, Tatiana, Nakamura, Hirotaka, Sueda, Keiichi, Yabuuchi, Toshinori, Yabashi, Makina, Wark, Justin S., Polsin, Danae N., Vinko, Sam M.
We present measurements on Fe$_2$O$_3$ amorphization and melt under laser-driven shock compression up to 209(10) GPa via time-resolved in situ x-ray diffraction. At 122(3) GPa, a diffuse signal is observed indicating the presence of a non-crystalline
Externí odkaz:
http://arxiv.org/abs/2408.17204
The prototypical $\alpha\to\omega$ phase transition in zirconium is an ideal test-bed for our understanding of polymorphism under extreme loading conditions. After half a century of study, a consensus had emerged that the transition is realized via o
Externí odkaz:
http://arxiv.org/abs/2404.18740
Autor:
Amouretti, A., Crépisson, C., Azadi, S., Cabaret, D., Campbell, T., Chin, D. A., Colin, B., Collins, G. R., Crandall, L., Fiquet, G., Forte, A., Gawne, T., Guyot, F., Heighway, P., Lee, H., McGonegle, D., Nagler, B., Pintor, J., Polsin, D., Rousse, G., Shi, Y., Smith, E., Wark, J. S., Vinko, S. M., Harmand, M.
We present in-situ x-ray diffraction and velocity measurements of Fe$_2$O$_3$ under laser shock compression at pressures between 38-116 GPa. None of the phases reported by static compression studies were observed. Instead, we observed an isostructura
Externí odkaz:
http://arxiv.org/abs/2402.18432
Autor:
Forte, Alessandro, Gawne, Thomas, El-Din, Karim K. Alaa, Humphries, Oliver S., Preston, Thomas R., Crépisson, Céline, Campbell, Thomas, Svensson, Pontus, Azadi, Sam, Heighway, Patrick, Shi, Yuanfeng, Chin, David A., Smith, Ethan, Baehtz, Carsten, Bouffetier, Victorien, Höppner, Hauke, McGonegle, David, Harmand, Marion, Collins, Gilbert W., Wark, Justin S., Polsin, Danae N., Vinko, Sam M.
Resonant inelastic x-ray scattering (RIXS) is a widely used spectroscopic technique, providing access to the electronic structure and dynamics of atoms, molecules, and solids. However, RIXS requires a narrow bandwidth x-ray probe to achieve high spec
Externí odkaz:
http://arxiv.org/abs/2402.00039
Autor:
Singh, Saransh, Gorman, Martin G., Heighway, Patrick G., Bernier, Joel V., McGonegle, David, Lee, Hae Ja, Nagler, Bob, Eggert, Jon H., Smith, Raymond F.
The traditional picture of solid-solid phase transformations assumes an ordered parent phase transforms into an ordered daughter phase via a single unique pathway. Zirconium and its prototypical phase transition from hexagonal close-packed (hcp) to s
Externí odkaz:
http://arxiv.org/abs/2310.07035
Autor:
Alessandro Forte, Thomas Gawne, Karim K. Alaa El-Din, Oliver S. Humphries, Thomas R. Preston, Céline Crépisson, Thomas Campbell, Pontus Svensson, Sam Azadi, Patrick Heighway, Yuanfeng Shi, David A. Chin, Ethan Smith, Carsten Baehtz, Victorien Bouffetier, Hauke Höppner, Alexis Amouretti, David McGonegle, Marion Harmand, Gilbert W. Collins, Justin S. Wark, Danae N. Polsin, Sam M. Vinko
Publikováno v:
Communications Physics, Vol 7, Iss 1, Pp 1-9 (2024)
Abstract Resonant inelastic x-ray scattering (RIXS) is a widely used spectroscopic technique, providing access to the electronic structure and dynamics of atoms, molecules, and solids. However, RIXS requires a narrow bandwidth x-ray probe to achieve
Externí odkaz:
https://doaj.org/article/e2e852682ede43c985bd0f655e926434
Slip competition and rotation suppression in tantalum and copper during dynamic uniaxial compression
Autor:
Heighway, Patrick G., Wark, Justin S.
When compressed, a metallic specimen will generally experience changes to its crystallographic texture due to plasticity-induced rotation. Ultrafast x-ray diffraction techniques make it possible to measure rotation of this kind in targets dynamically
Externí odkaz:
http://arxiv.org/abs/2202.08813
Autor:
Avraam, P., McGonegle, D., Heighway, P. G., Wehrenberg, C. E., Floyd, E., Comley, A., Foster, J. M., Turner, J., Case, S., Wark, J. S.
Wehrenberg et. al. [Nature 550 496 (2017)] used ultrafast in situ x-ray diffraction at the LCLS x-ray free-electron laser facility to measure large lattice rotations resulting from slip and deformation twinning in shock-compressed laser-driven [110]
Externí odkaz:
http://arxiv.org/abs/2108.05166
Autor:
Heighway, Patrick G., Wark, Justin S.
When a metallic specimen is plastically deformed, its underlying crystal structure must often rotate in order to comply with its macroscopic boundary conditions. There is growing interest within the dynamic compression community in exploiting x-ray d
Externí odkaz:
http://arxiv.org/abs/2011.11532
Autor:
Doris Lanz, Julie Dodds, Graham Hitman, Elena Pizzo, Shakila Thangaratinam, Chiamaka Esther Amaefule, Angeliki Bolou, Zoe Drymoussi, Francisco Jose Gonzalez Carreras, Maria del Carmen Pardo Llorente, Amy Thomas, James Heighway, Anita Sanghi, Javier Zamora, Angela Harden, Teresa Pérez, Mohammed S B Huda
Publikováno v:
BMJ Open, Vol 13, Iss 11 (2023)
Objective To determine the feasibility of a definitive trial of metformin to prevent type 2 diabetes in the postnatal period in women with gestational diabetes.Design A multicentre, placebo-controlled, double-blind randomised feasibility trial with q
Externí odkaz:
https://doaj.org/article/51d538470d264a578c478c0862d2bf50