Details

Autor(en) / Beteiligte

• Hah, J
• Nees, J A
• Hammig, M D
• Krushelnick, K
• Thomas, A G R

Titel

Characterization of a high repetition-rate laser-driven short-pulsed neutron source

Ist Teil von

• Plasma physics and controlled fusion, 2018-03, Vol.60 (5), p.54011

Ort / Verlag

United States: IOP Publishing

Erscheinungsjahr

2018

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We demonstrate a repetitive, high flux, short-pulsed laser-driven neutron source using a heavy-water jet target. We measure neutron generation at 1/2 kHz repetition rate using several-mJ pulse energies, yielding a time-averaged neutron flux of 2 × 105 neutrons s−1 (into 4π steradians). Deuteron spectra are also measured in order to understand source characteristics. Analyses of time-of-flight neutron spectra indicate that two separate populations of neutrons, 'prompt' and 'delayed', are generated at different locations. Gamma-ray emission from neutron capture 1H(n,γ) is also measured to confirm the neutron flux.