Collimated beam of MeV electrons accelerated by a terawatt laser

R. Wagner, S. Y. Chen, A. Maksimchuk, E. Dodd, J. K. Kim, D. Umstadter

Research output: Contribution to conferencePaper

Abstract

It is demonstrated that a laser wake field can produce a collimated beam of MeV electrons and that the laser may be guided by relativistic self-focusing and electron cavitation. The experiment is remarkably simple. A high-power laser is focused into a molecular beam produced by a gas jet. The laser used in the experiment has a pulse duration of τ = 400 fs, and an energy up to 10 J, corresponding to a peak power of 25 TW. When focused in vacuum with an f/5 off-axis parabolic mirror, the laser can reach an intensity of up to 1019 W/cm2. To create the plasma, the gas from a pulsed valve is tunnel-ionized by the laser pulse itself, reaching a peak electron density on axis of 1019 cm-3. The electron source size is estimated to be 10 μm and the electron pulse duration, a few picoseconds.

Original languageEnglish (US)
Number of pages1
StatePublished - Jan 1 1996
EventProceedings of the 1996 6th Quantum Electronics and Laser Science Conference, QELS - Anaheim, CA, USA
Duration: Jun 2 1996Jun 7 1996

Conference

ConferenceProceedings of the 1996 6th Quantum Electronics and Laser Science Conference, QELS
CityAnaheim, CA, USA
Period6/2/966/7/96

Fingerprint

lasers
electrons
pulse duration
gas jets
electron sources
self focusing
cavitation flow
wakes
high power lasers
molecular beams
tunnels
mirrors
vacuum
pulses
gases
energy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Wagner, R., Chen, S. Y., Maksimchuk, A., Dodd, E., Kim, J. K., & Umstadter, D. (1996). Collimated beam of MeV electrons accelerated by a terawatt laser. Paper presented at Proceedings of the 1996 6th Quantum Electronics and Laser Science Conference, QELS, Anaheim, CA, USA, .

Collimated beam of MeV electrons accelerated by a terawatt laser. / Wagner, R.; Chen, S. Y.; Maksimchuk, A.; Dodd, E.; Kim, J. K.; Umstadter, D.

1996. Paper presented at Proceedings of the 1996 6th Quantum Electronics and Laser Science Conference, QELS, Anaheim, CA, USA, .

Research output: Contribution to conferencePaper

Wagner, R, Chen, SY, Maksimchuk, A, Dodd, E, Kim, JK & Umstadter, D 1996, 'Collimated beam of MeV electrons accelerated by a terawatt laser' Paper presented at Proceedings of the 1996 6th Quantum Electronics and Laser Science Conference, QELS, Anaheim, CA, USA, 6/2/96 - 6/7/96, .
Wagner R, Chen SY, Maksimchuk A, Dodd E, Kim JK, Umstadter D. Collimated beam of MeV electrons accelerated by a terawatt laser. 1996. Paper presented at Proceedings of the 1996 6th Quantum Electronics and Laser Science Conference, QELS, Anaheim, CA, USA, .
Wagner, R. ; Chen, S. Y. ; Maksimchuk, A. ; Dodd, E. ; Kim, J. K. ; Umstadter, D. / Collimated beam of MeV electrons accelerated by a terawatt laser. Paper presented at Proceedings of the 1996 6th Quantum Electronics and Laser Science Conference, QELS, Anaheim, CA, USA, .1 p.
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AU - Chen, S. Y.

AU - Maksimchuk, A.

AU - Dodd, E.

AU - Kim, J. K.

AU - Umstadter, D.

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N2 - It is demonstrated that a laser wake field can produce a collimated beam of MeV electrons and that the laser may be guided by relativistic self-focusing and electron cavitation. The experiment is remarkably simple. A high-power laser is focused into a molecular beam produced by a gas jet. The laser used in the experiment has a pulse duration of τ = 400 fs, and an energy up to 10 J, corresponding to a peak power of 25 TW. When focused in vacuum with an f/5 off-axis parabolic mirror, the laser can reach an intensity of up to 1019 W/cm2. To create the plasma, the gas from a pulsed valve is tunnel-ionized by the laser pulse itself, reaching a peak electron density on axis of 1019 cm-3. The electron source size is estimated to be 10 μm and the electron pulse duration, a few picoseconds.

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