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Ultrafast pulse radiolysis using a terawatt laser wakefield accelerator
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10.1063/1.2696204
/content/aip/journal/jap/101/5/10.1063/1.2696204
http://aip.metastore.ingenta.com/content/aip/journal/jap/101/5/10.1063/1.2696204
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

The scheme of pulse radiolysis. Transient absorption experiment using a tabletop laser wakefield accelerator (see Secs. II and IV for more detail).

Image of FIG. 2.
FIG. 2.

(a) The image of a LANEX radioluminescent screen placed behind a thick aluminum shield at the position of the front end of the sample exposed to a single electron pulse. (b) Horizontal (solid) and vertical (dashed) intensity slices from LANEX image.

Image of FIG. 3.
FIG. 3.

Energy spectra obtained from permanent magnet spectrometer for the electrons in (a) and (b) cones dispersed on the radiochromic film. Images are averaged over 100 shots. The oscillations are artifacts of the spectrum reconstruction.

Image of FIG. 4.
FIG. 4.

(a) The energy spectrum integrated over the entire electron beam reconstructed using the dosimetry method outlined in Sec. III. (i) The spectrum for the electron beam incident on the copper disk. (ii) The spectrum of the electrons in the water sample at the position of the 800 nm probe beam. (b) The dispersion of arrival times for the electrons having the energy spectrum shown in Fig. 4(a).

Image of FIG. 5.
FIG. 5.

(a) The rise of the transient absorbance from hydrated electron in pulse radiolysis of deoxygenated water in 10 mm (empty triangles), 5 mm (empty squares), and 2 mm (filled circles) optical path cells. See Sec. V for more detail. Each point represents the average of 100 pulses. The solid lines are least-squares fits using error function. (b) The decay kinetics of observed in pulse radiolysis of 1 and aqueous solutions of perchloric acid in a 2 mm cell (filled squares and empty circles, respectively). The solid lines are exponential decay functions convoluted with a Gaussian. The electron rapidly decays in a reaction with hydronium ion. (c) The kinetics and the fit from panel (b) shown separately (open circles and solid line, respectively). The dashed line shows the Gaussian “generation pulse.”

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/content/aip/journal/jap/101/5/10.1063/1.2696204
2007-03-01
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Ultrafast pulse radiolysis using a terawatt laser wakefield accelerator
http://aip.metastore.ingenta.com/content/aip/journal/jap/101/5/10.1063/1.2696204
10.1063/1.2696204
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