Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Characterization of laser-driven proton beams from near-critical density targets using copper activation
AU - Willingale, L.
AU - Nagel, S. R.
AU - Thomas, A. G. R.
AU - Bellei, C.
AU - Clarke, R. J.
AU - Dangor, A. E.
AU - Heathcote, R.
AU - Kaluza, M. C.
AU - Kamperidis, C.
AU - Kneip, S.
AU - Krushelnick, K.
AU - Lopes, N.
AU - Mangles, S. P. D.
AU - Nazarov, W.
AU - Nilson, P. M.
AU - Najmudin, Z.
PY - 2015/1
Y1 - 2015/1
N2 - Copper activation was used to characterize high-energy proton beam acceleration from near-critical density plasma targets. An enhancement was observed when decreasing the target density, which is indicative for an increased laser-accelerated hot electron density at the rear target-vacuum boundary. This is due to channel formation and collimation of the hot electrons inside the target. Particle-in-cell simulations support the experimental observations and show the correlation between channel depth and longitudinal electric field strength is directly correlated with the proton acceleration.
AB - Copper activation was used to characterize high-energy proton beam acceleration from near-critical density plasma targets. An enhancement was observed when decreasing the target density, which is indicative for an increased laser-accelerated hot electron density at the rear target-vacuum boundary. This is due to channel formation and collimation of the hot electrons inside the target. Particle-in-cell simulations support the experimental observations and show the correlation between channel depth and longitudinal electric field strength is directly correlated with the proton acceleration.
KW - PLASMA INTERACTIONS
KW - SOLID INTERACTIONS
KW - GENERATION
KW - PULSES
KW - ION
U2 - 10.1017/S002237781400066X
DO - 10.1017/S002237781400066X
M3 - Journal article
VL - 81
JO - Journal of Plasma Physics
JF - Journal of Plasma Physics
SN - 0022-3778
M1 - 365810102
ER -