(Color online) Experimental setup for the colliding plasma experiment. Ca target, lenses (, , and ), wedge prism (WP), Dove prism, silver mirror (SM), filter wheel (FW), spectrometer, and ICCD cameras.
(Color online) Temporal and 2D spatial plasma evolution recorded at time delays of (a) , (b) , (c) , and (d) from plasma initiation. A narrow bandpass filter centered at was used to track the transition.
(Color online) Temporal evolution of the integrated emission intensity from the stagnation layer obtained from the 2D images of Fig. 2.
(Color online) Typical raw spectroscopic image (wavelength on axis and longitudinal distance on axis) of the stagnation region in the vicinity of the doublets 370.60 and . The spectrum was recorded at a time delay of from plasma initiation.
(Color online) Longitudinal intensity distribution for from plasma initiation for Ca transitions measured in this work.
(Color online) Longitudinal density distribution for 300, 420, and from plasma initiation.
(Color online) Intensity ratio of and transitions as a function of the temperature [Eq. (2)] for various electron densities.
(Color online) Longitudinal temperature distribution for 300, 420, and from plasma initiation.
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