Abstract
| Language | English |
|---|---|
| Pages | 324-328 |
| Number of pages | 4 |
| Journal | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |
| Volume | 445 |
| Issue number | 1-3 |
| DOIs | |
| Publication status | Published - 1 May 2000 |
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Keywords
- surface plasmons
- ultrafast electron acceleration
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Evanescent-wave acceleration of femtosecond electron bunches. / Zawadzka, J.; Jaroszynski, D.A.; Carey, J.J.; Wynne, K.
In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 445, No. 1-3, 01.05.2000, p. 324-328.Research output: Contribution to journal › Article
TY - JOUR
T1 - Evanescent-wave acceleration of femtosecond electron bunches
AU - Zawadzka, J.
AU - Jaroszynski, D.A.
AU - Carey, J.J.
AU - Wynne, K.
PY - 2000/5/1
Y1 - 2000/5/1
N2 - A 150-fs 800-nm 1-μJ laser was used to excited surface plasmons in the Kretschmann geometry in a 500-Å silver film. Multiphoton excitation results in the emission of femtosecond electron bunches (40 fC) as had been seen before. The electron beam is highly directional and perpendicular to the prism surface. A time-of-flight setup has been used to measure the kinetic-energy distribution of the photoelectrons. Surprisingly, we find that this distribution extends to energies as high as 40 eV. Theoretical calculations show that these high energies may be due to acceleration in the evanescent laser field that extends from the silver film out into the vacuum. These results suggest that femtosecond pulses with more energy per pulse or longer wavelength may be used to accelerate electrons to the keV or even MeV level.
AB - A 150-fs 800-nm 1-μJ laser was used to excited surface plasmons in the Kretschmann geometry in a 500-Å silver film. Multiphoton excitation results in the emission of femtosecond electron bunches (40 fC) as had been seen before. The electron beam is highly directional and perpendicular to the prism surface. A time-of-flight setup has been used to measure the kinetic-energy distribution of the photoelectrons. Surprisingly, we find that this distribution extends to energies as high as 40 eV. Theoretical calculations show that these high energies may be due to acceleration in the evanescent laser field that extends from the silver film out into the vacuum. These results suggest that femtosecond pulses with more energy per pulse or longer wavelength may be used to accelerate electrons to the keV or even MeV level.
KW - surface plasmons
KW - ultrafast electron acceleration
UR - http://dx.doi.org/10.1016/S0168-9002(00)00136-4
U2 - 10.1016/S0168-9002(00)00136-4
DO - 10.1016/S0168-9002(00)00136-4
M3 - Article
VL - 445
SP - 324
EP - 328
JO - Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
T2 - Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
SN - 0168-9002
IS - 1-3
ER -