Speaker
YOUNG-MIN SHIN
(Northern Illinois University)
Description
Crystals behave like a non-equilibrium medium (e.g. plasma), but at a relatively low temperature, if heated by a high-power driving source. The warm dense matter contains many more ions (n0 ~ 10^19 – 10^23 cm^-3) available for plasma acceleration than gaseous plasmas, and can possibly support electric fields of up to 30 TV/m of plasma oscillation [1 - 4]. Atomic lattice spaces in solid crystals are known to consist of 10 – 100 V/Å potential barriers capable of guiding and collimating high energy particles with continuously focused acceleration/deceleration by the exceptionally high electromagnetic fields. Nanostructured crystals (e.g. carbon nanotube) with dimensional flexibilities can accept a few orders of magnitude larger phase-space volume of channeled particles than natural crystals. Our PIC simulation results [5, 6] obtained from two plasma acceleration codes, VORPAL and EPOCH, indicate that in the linear regime (nb ≤ n0) the beam-driven and laser-driven electrons channeled in a 100 micrometer long effective nanotube gain 10 MeV (G = 1 – 10 TeV/m). Experimental tests, including slit-mask beam modulation and pump-probe electron diffraction, are designed in Fermilab and NIU to identify a wakefield effect in a photo-excited crystal.
Acknowledgement
This work was supported by the DOE contract No.DEAC02-07CH11359 to the Fermi Research Alliance LLC. We also thank the FAST Department team for the helpful discussions and technical support.
References
[1] T. Tajima, and J. M. Dawson, Phys. Rev. Lett. 43(4), 267 (1979)
[2] I. Y. Dodin and N. J. Fisch, Phys. Plasmas 15, 103105 (2008)
[3] L. B. Fletcher, et. al., Nature Photonics 9, 274 (2015)
[4] T. Tajima, Eur. Phys. J. 223, 1037 (2014)
[5] Y. M. Shin, Appl. Phys. Lett. 105, 114106 (2014)
[6] Y. M. Shin, Dean A. Still, and Vladimir Shiltsev, Physics of Plasmas 20, 123106 (2013)
Primary author
YOUNG-MIN SHIN
(Northern Illinois University)
Co-authors
Dr
Alex Lumpkin
(Fermilab)
Mr
Deano Farinella
(University of California -Irvine)
Prof.
Peter Taborek
(University of California - Irvine)
Dr
Randy Thurman-Keup
(Fermilab)
Prof.
Toshiki Tajima
(University of California - Irvine)
Dr
Vladimir Shiltsev
(Fermilab)
Prof.
Xiaomei Zhang
(Shanghai Institute of Optics and Fine Mechanics)
