TITLE

Energetic neutron beams generated from femtosecond laser plasma interactions

AUTHOR(S)
Zulick, C.; Dollar, F.; Chvykov, V.; Davis, J.; Kalinchenko, G.; Maksimchuk, A.; Petrov, G. M.; Raymond, A.; Thomas, A. G. R.; Willingale, L.; Yanovsky, V.; Krushelnick, K.
PUB. DATE
March 2013
SOURCE
Applied Physics Letters;3/25/2013, Vol. 102 Issue 12, p124101
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Experiments at the HERCULES laser facility have produced directional neutron beams with energies up to 16.8(±0.3) MeV using 12d(d,n)23He,73Li(p,n)47Be,and37Li(d,n)48Be reactions. Efficient 12Li(d,n)48Be reactions required the selective acceleration of deuterons through the introduction of a deuterated plastic or cryogenically frozen D2O layer on the surface of a thin film target. The measured neutron yield was ≤1.0 (±0.5)×107 neutrons/sr with a flux 6.2(±3.7) times higher in the forward direction than at 90°. This demonstrates that femtosecond lasers are capable of providing a time averaged neutron flux equivalent to commercial 12d(d,n)23He generators with the advantage of a directional beam with picosecond bunch duration.
ACCESSION #
86446843

 

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