TY - JOUR
T1 - Ultrafast emission spectroscopy of exploding nanoaluminum in Teflon
T2 - Observations of aluminum fluoride
AU - Conner, Rusty W.
AU - Dlott, Dana D.
N1 - Funding Information:
This material is based on work supported by the US Army Research Office under award numbers W911NF-04-1-0178 and W911NF-01-0072 , and by the US Air Force Office of Scientific Research under award number FAA9550-09-1-0163 . We thank the Center for Microanalysis of Materials at the University of Illinois at Urbana-Champaign, supported by Award DEFG02-91ER45439.
PY - 2011/8/25
Y1 - 2011/8/25
N2 - A multifunctional reactive material with Al nanoparticles and Teflon AF oxidizer is studied after laser flash-heating by time-resolved emission spectroscopy. At shorter times the emission is dominated by a broadband continuum peaked at 250 nm, originating from the Al core. At longer times, during an ablation process confined by thick optical windows, in addition to a broadband component, atomic Al emission bands and Al and AlF absorptions are observed. The AlF time dependence suggests that part of the AlF is created in the condensed-phase core and part in the dense plasma associated with confined ablation.
AB - A multifunctional reactive material with Al nanoparticles and Teflon AF oxidizer is studied after laser flash-heating by time-resolved emission spectroscopy. At shorter times the emission is dominated by a broadband continuum peaked at 250 nm, originating from the Al core. At longer times, during an ablation process confined by thick optical windows, in addition to a broadband component, atomic Al emission bands and Al and AlF absorptions are observed. The AlF time dependence suggests that part of the AlF is created in the condensed-phase core and part in the dense plasma associated with confined ablation.
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U2 - 10.1016/j.cplett.2011.07.036
DO - 10.1016/j.cplett.2011.07.036
M3 - Article
AN - SCOPUS:80051800404
SN - 0009-2614
VL - 512
SP - 211
EP - 216
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 4-6
ER -