Betatron-type laser-plasma x-rays are recorded simultaneously with their corresponding relativistic electron spectra in a laser wakefield acceleration scheme. The role of the multi-electron gas target in the betatron-type x-ray efficient generation is experimentally examined. A proof of principle experimental study shows that by using a multi-electron gas target and appropriately adjusting the pumping laser intensity an increase in betatron-type x-rays efficiency could be achieved. This is attributed to sophisticated control of the type of the electron injection inside the plasma bubble related to the tunneling ionization process occurring after the laser pulse peak. This method depends primarily on the gas target charge state chosen for attaining the ionization injection scheme and could be extended to a wide range of relativistic laser intensities.
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29 March 2021
Research Article|
March 31 2021
Betatron-type laser-plasma x-ray sources generated in multi-electron gas targets
A. Grigoriadis;
A. Grigoriadis
1
Department of Physics, University of Ioannina
, 45110 Ioannina, Greece
2
Institute of Plasma Physics and Lasers, Hellenic Mediterranean University Research Centre
, 74100 Rethymno, Greece
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G. Andrianaki;
G. Andrianaki
2
Institute of Plasma Physics and Lasers, Hellenic Mediterranean University Research Centre
, 74100 Rethymno, Greece
3
School of Production Engineering and Management, Technical University of Crete
, 73100 Chania, Greece
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M. Tatarakis;
M. Tatarakis
2
Institute of Plasma Physics and Lasers, Hellenic Mediterranean University Research Centre
, 74100 Rethymno, Greece
4
Department of Electronic Engineering, Hellenic Mediterranean University
, 73133 Chania, Greece
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E. P. Benis
;
E. P. Benis
a)
1
Department of Physics, University of Ioannina
, 45110 Ioannina, Greece
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N. A. Papadogiannis
N. A. Papadogiannis
a)
2
Institute of Plasma Physics and Lasers, Hellenic Mediterranean University Research Centre
, 74100 Rethymno, Greece
5
Department of Music Technology and Acoustics, Hellenic Mediterranean University
, 74133 Rethymno, Greece
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Appl. Phys. Lett. 118, 131110 (2021)
Article history
Received:
February 01 2021
Accepted:
March 14 2021
Citation
A. Grigoriadis, G. Andrianaki, M. Tatarakis, E. P. Benis, N. A. Papadogiannis; Betatron-type laser-plasma x-ray sources generated in multi-electron gas targets. Appl. Phys. Lett. 29 March 2021; 118 (13): 131110. https://doi.org/10.1063/5.0046184
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