Predominant Contribution of Direct Laser Acceleration to High-Energy Electron Spectra in a Low-Density Self-Modulated Laser Wakefield Accelerator

no code implementations • 2 Dec 2020 • P. M. King, K. Miller, N. Lemos, J. L. Shaw, B. F. Kraus, M. Thibodeau, B. M. Hegelich, J. Hinojosa, P. Michel, C. Joshi, K. A. Marsh, W. Mori, A. Pak, A. G. R. Thomas, F. Albert

When the electrons are dispersed orthogonally to the laser polarization, their spectrum above 60 MeV shows a forking structure characteristic of direct laser acceleration (DLA).

Plasma Physics Accelerator Physics

Characteristic scale of star formation. I. Clump formation efficiency on local scales

no code implementations • 30 Jun 2020 • D. J. Eden, T. J. T. Moore, R. Plume, A. J. Rigby, J. S. Urquhart, K. A. Marsh, C. H. Peñaloza, P. C. Clark, M. W. L. Smith, K. Tahani, S. E. Ragan, M. A. Thompson, D. Johnstone, H. Parsons, R. Rani

The observed DGMF is a metric for the instantaneous clump-formation efficiency (CFE) in the molecular gas and a two-dimensional power-spectrum analysis of the DGMF reveals a break in slope at the approximate size scale of molecular clouds.

Astrophysics of Galaxies