Improving a high-power laser based relativistic electron source: the role of laser pulse contrast and gas jet density profile

Author(s):  
Anastasios Grigoriadis ◽  
Georgia Andrianaki ◽  
Ioannis Fitilis ◽  
Vasilis Menelaos Dimitriou ◽  
Eugene Lawrence Clark ◽  
...  

Abstract A relativistic electron source based on high power laser interaction with gas jet targets has been developed at the Institute of Plasma Physics & Lasers of the Hellenic Mediterranean University. Initial measurements were conducted using the “Zeus” 45 TW laser with peak intensities in the range of 1018-1019 W/cm2 interacting with a He pulsed gas jet having a 0.8 mm diameter nozzle. A significant improvement of the electron signal was measured after using an absorber to improve the laser pulse contrast from 10-10 to 10-11. A high stability quasi-monoenergetic electron beam of about 50 MeV was achieved and measured using a magnetic spectrometer for pulsed gas jet backing pressure of 12 bar. Supplementary studies using a 3 mm diameter nozzle for backing pressures in the range of 35 to 40 bar showed electron beam production with energies spread in the range from 50 to 150 MeV. The pulsed jet density profile was determined using interferometric techniques. Particle-in-cell (PIC) simulations, at the above experimentally determined conditions, support our experimental findings.

2021 ◽  
Vol 51 (11) ◽  
pp. 1009-1018
Author(s):  
V F Kovalev ◽  
V Yu Bychenkov

2016 ◽  
Vol 23 (11) ◽  
pp. 113106 ◽  
Author(s):  
Naveen Pathak ◽  
Alexei Zhidkov ◽  
Shinichi Masuda ◽  
Tomonao Hosokai ◽  
Ryosuke Kodama

1969 ◽  
Vol 1 (5) ◽  
pp. 255-258 ◽  
Author(s):  
F.W. Lunau ◽  
E.W. Paine ◽  
M. Richardson ◽  
M.D.S.P. Wijetunge

2000 ◽  
Vol 30 (3) ◽  
pp. 191-206 ◽  
Author(s):  
Sergei Yu Gus'kov ◽  
A Caruso ◽  
Vladislav B Rozanov ◽  
C Strangio

2004 ◽  
Vol 30 (2) ◽  
pp. 183-186 ◽  
Author(s):  
E. A. Bolkhovitinov ◽  
B. L. Vasin ◽  
S. Yu. Gus’kov ◽  
I. Ya. Doskach ◽  
A. A. Erokhin ◽  
...  

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