TY - JOUR
T1 - Efficient laser production of energetic neutral beams
AU - Mollica, F.
AU - Antonelli, L.
AU - Flacco, A.
AU - Braenzel, J.
AU - Vauzour, B.
AU - Folpini, G.
AU - Birindelli, G.
AU - Schnuerer, M.
AU - Batani, D.
AU - Malka, V.
N1 - Work Funded by OSEO Project n° I0901001W, ANR ILA and Deutsche Forschungsgemeinschaft within the program CRC/Transregio 18 and LASERLAB-EUROPE (grant agreement n 284464, EC's Seventh Framework Program, project MBI001857). F Mollica aknowledges C Deutsch and A Liftshitz for collaboration with atomic physic bibliography.
PY - 2016/2/15
Y1 - 2016/2/15
N2 - Laser-driven ion acceleration by intense, ultra-short, laser pulse has received increasing attention in recent years, and the availability of much compact and versatile ions sources motivates the study of laser-driven sources of energetic neutral atoms. We demonstrate the production of a neutral and directional beam of hydrogen and carbon atoms up to 200 keV per nucleon, with a peak flow of 2.7 x 10(13) atom s(-1). Laser accelerated ions are neutralized in a pulsed, supersonic argon jet with tunable density between 1.5 x 10(17) cm(-3) and 6 x 10(18) cm(-3). The neutralization efficiency has been measured by a time-of-flight detector for different argon densities. An optimum is found, for which complete neutralization occurs. The neutralization rate can be explained only at high areal densities (> 1 x 10(17) cm(-2)) by single electron charge transfer processes. These results suggest a new perspective for the study of neutral production by laser and open discussion of neutralization at a lower density.
AB - Laser-driven ion acceleration by intense, ultra-short, laser pulse has received increasing attention in recent years, and the availability of much compact and versatile ions sources motivates the study of laser-driven sources of energetic neutral atoms. We demonstrate the production of a neutral and directional beam of hydrogen and carbon atoms up to 200 keV per nucleon, with a peak flow of 2.7 x 10(13) atom s(-1). Laser accelerated ions are neutralized in a pulsed, supersonic argon jet with tunable density between 1.5 x 10(17) cm(-3) and 6 x 10(18) cm(-3). The neutralization efficiency has been measured by a time-of-flight detector for different argon densities. An optimum is found, for which complete neutralization occurs. The neutralization rate can be explained only at high areal densities (> 1 x 10(17) cm(-2)) by single electron charge transfer processes. These results suggest a new perspective for the study of neutral production by laser and open discussion of neutralization at a lower density.
U2 - https://doi.org/10.1088/0741-3335/58/3/034016
DO - https://doi.org/10.1088/0741-3335/58/3/034016
M3 - مقالة
SN - 0741-3335
VL - 58
JO - Plasma Physics and Controlled Fusion
JF - Plasma Physics and Controlled Fusion
IS - 3
M1 - 034016
T2 - 2015 International Laser Plasma Accelerators Workshop
Y2 - 10 May 2015 through 15 May 2015
ER -