Energetic neutron beams generated from femtosecond laser plasma interactions

Energetic neutron beams generated from femtosecond laser plasma interactions
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DOI:
10.1063/1.4795723
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发表时间:
2013-03-25
影响因子:
4
通讯作者:
Krushelnick, K.
Krushelnick, K.
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Zulick, C.;Dollar, F.;Krushelnick, K.

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在HERCULES激光设施的实验中,利用(2)(1)d(d,n)(2)He-3; Li-7(3)(p,n)(4)Be-7;和Li-7(3)(d,n)(4)Be-8反应产生了能量高达16.8(+/- 0.3)MeV的定向中子束。高效的Li-7(3)(d,n)(4)Be-8反应需要通过在薄膜靶表面上引入氘代塑料或低温冷冻的D2 O层来选择性地加速氘。测得的中子产额为
Experiments at the HERCULES laser facility have produced directional neutron beams with energies up to 16.8(+/- 0.3) MeV using (2)(1)d(d, n)(2)He-3; Li-7(3)(p, n)(4)Be-7; and Li-7(3)(d, n)(4)Be-8 reactions. Efficient Li-7(3)(d, n)(4)Be-8 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