Top arrow pointing up

Resources

Resources

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

Jun 27, 2022. Publications

Abstract

The interaction of an intense laser with a solid foil target can drive ∼∼ TV/m electric fields, accelerating ions to MeV energies. In this study, we experimentally observe that structured targets can dramatically enhance proton acceleration in the target normal sheath acceleration regime. At the Texas Petawatt Laser facility, we compared proton acceleration from a 1μm1μm flat Ag foil, to a fixed microtube structure 3D printed on the front side of the same foil type. A pulse length (140–450 fs) and intensity ((4–10) ×1020×1020 W/cm22) study found an optimum laser configuration (140 fs, 4 ×1020×1020 W/cm22), in which microtube targets increase the proton cutoff energy by 50% and the yield of highly energetic protons (>10>10 MeV) by a factor of 8××. When the laser intensity reaches 10211021 W/cm22, the prepulse shutters the microtubes with an overcritical plasma, damping their performance. 2D particle-in-cell simulations are performed, with and without the preplasma profile imported, to better understand the coupling of laser energy to the microtube targets. The simulations are in qualitative agreement with the experimental results, and show that the prepulse is necessary to account for when the laser intensity is sufficiently high.

DOI: https://doi.org/10.1038/S41598-022-14881-9

More From Publications

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

Dec 15, 2021    Publications

Ion acceleration and D‐D fusion neutron generation in relativistically transparent deuterated nanowire arrays

A. Curtis, R. Hollinger, C. Calvi, S. Wang, S. Huanyu, Y. Wang, A. Pukhov, V. Kaymak, C. Baumann, J. Tinsley, V.N....

Read more

Dec 9, 2021    Publications

Emittance preserving thin film plasma mirrors for GeV scale laser plasma accelerators

A. Zingale, N. Czapla, D. M. Nasir, S. K. Barber, J. H. Bin, A. J. Gonsalves, F. Isono, J. van Tilborg, S. Steinke,...

Read more