Top arrow pointing up



Homogeneous, Micron-Scale High-Energy-Density Matter Generated by Relativistic Laser-Solid Interactions

Sep 21, 2022. Publications


Short-pulse, laser-solid interactions provide a unique platform for studying complex high-energy-density matter. We present the first demonstration of solid-density, micron-scale keV plasmas uniformly heated by a high-contrast, 400 nm wavelength laser at intensities up to 2×1021  W/cm2. High-resolution spectral analysis of x-ray emission reveals uniform heating up to 3.0 keV over 1  µm depths. Particle-in-cell simulations indicate the production of a uniformly heated keV plasma to depths of 2  μm. The significant bulk heating and presence of highly ionized ions deep within the target are attributed to the few MeV hot electrons that become trapped and undergo refluxing within the target sheath fields. These conditions enabled the differentiation of atomic physics models of ionization potential depression in high-energy-density environments.


More From Publications

Jul 27, 2022    Publications

High-repetition-rate, multi-MeV deuteron acceleration from converging heavy water microjets at laser intensities of 10 21 W/cm2

F. Treffert, C. B. Curry, H.-G. J. Chou, C. J. Crissman, D. P. DePonte, F. Fiuza, G. D. Glenn, R. C. Hollinger, R....

Read more

Jun 27, 2022    Publications

A laser parameter study on enhancing proton generation from microtube foil targets

J. Strehlow, J. Kim, M. Bailly-Grandvaux, S. Bolaños, H. Smith, A. Haid, E. L. Alfonso, C. Aniculaesei, H. Chen, T....

Read more

Apr 20, 2022    Publications

Transient Relativistic Plasma Grating to Tailor High-Power Laser Fields, Wakefield Plasma Waves, and Electron Injection

Q. Chen, D. Maslarova, J. Wang, S. X. Lee, V. Horny, and D. Umstadter. Phys. Rev. Lett. 128, 164801, (2022).

Read more

Apr 9, 2022    Publications

Enhancement of high energy X-ray radiography using compound parabolic concentrator targets

P. M. King, D. Rusby, A. Hannasch, N. Lemos, G. Tiwari, A. Pak, S. Kerr, G. Cochran, I. Pagano, G. J. Williams, S. F....

Read more

Jan 27, 2022    Publications

A new platform for ultra‑high dose rate radiobiological research using the BELLA PW laser proton beamline

J. Bin, L. Obst-Huebl, J.-H. Mao, K. Nakamura, L. D. Geulig, H. Chang, Q. Ji, L. He, J. De Chant, Z. Kober, A. J....

Read more

Jan 11, 2022    Publications

Vacuum laser acceleration of super-ponderomotive electrons using relativistic transparency injection

P. K. Singh, F.-Y. Li, C.-K. Huang, A. Moreau, R. Hollinger, A. Junghans, S. Wang, A. Favalli, C. Calvi, Y. Wang, H....

Read more