Micro-scale fusion in dense relativistic nanowire array plasmas
Abstract
Nuclear fusion is regularly created in spherical plasma compressions driven by multi-kilojoule pulses from the world’s largest lasers. Here we demonstrate a dense fusion environment created by irradiating arrays of deuterated nanostructures with joule-level pulses from a compact ultrafast laser. The irradiation of ordered deuterated polyethylene nanowires arrays with femtosecond pulses of relativistic intensity creates ultra-high energy density plasmas in which deuterons (D) are accelerated up to MeV energies, efficiently driving D–D fusion reactions and ultrafast neutron bursts. We measure up to 2 × 106 fusion neutrons per joule, an increase of about 500 times with respect to flat solid targets, a record yield for joule-level lasers. Moreover, in accordance with simulation predictions, we observe a rapid increase in neutron yield with laser pulse energy. The results will impact nuclear science and high energy density research and can lead to bright ultrafast quasi-monoenergetic neutron point sources for imaging and materials studies.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Mar 14, 2018
- Source ID
- 10.1038/s41467-018-03445-z
Entities
People
- Alden Curtis
- Alex Rockwood
- Alexander Pukhov
- Chase Calvi
- J. J. Rocca
- James Tinsley
- R. Hollinger
- Shoujun Wang
- Vural Kaymak
- Vyacheslav N Shlyaptsev
- Yong Wang