This study overturns a dominant six-decade old notion that the giant magnetic field in a high intensity laser produced plasma evolves from the nanometre scale. Instead the field actually originates at macroscopic scales defined by the boundaries of the electron beam that is propagating in the plasma. This could alter our understanding of magnetic fields in astrophysics and laser fusion and may help in designing next generation high energy particle sources for imaging and therapies.
- Physical Review Research
- Tata Institute of Fundamental Research Mumbai, Institute for Plasma Research Gandhinagar, Indian Institute of Technology Delhi, Department of Science and Technology, Science and Engineering Research Board, Japanese Society for Promotion of Science Tokyo