Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Article number | 055012 |
---|---|
<mark>Journal publication date</mark> | 05/2016 |
<mark>Journal</mark> | Plasma Physics and Controlled Fusion |
Issue number | 5 |
Volume | 58 |
Number of pages | 8 |
Publication Status | Published |
Early online date | 30/03/16 |
<mark>Original language</mark> | English |
Single photon counting techniques were used with an x-ray CCD camera to measure features of synchrotron-like x-ray spectra generated by betatron oscillations of electrons in a laser wakefield accelerator (LWFA) with different injection techniques. Measurements were made using the Hercules laser system at the University of Michigan. With a single stage gas cell, we demonstrate that pure helium gas in our wakefield accelerator will produce spectra with higher critical energies than when helium mixed with nitrogen is used. This result was not evident when a two stage gas cell was used.