scholarly journals Low-density plasma formation in aqueous biological media using sub-nanosecond laser pulses

2014 ◽  
Vol 105 (6) ◽  
pp. 063701 ◽  
Author(s):  
Suzanne L. Genc ◽  
Huan Ma ◽  
Vasan Venugopalan
Keyword(s):  
Laser Pulses ◽  
Plasma Formation ◽  
Nanosecond Laser ◽  
Low Density ◽  
Biological Media ◽  
Nanosecond Laser Pulses ◽  
Low Density Plasma ◽  
Density Plasma

Generation of very low energy-spread electron beams using low-intensity laser pulses in a low-density plasma

2011 ◽  
Vol 18 (3) ◽  
pp. 033109 ◽  
Author(s):  
Ajay K. Upadhyay ◽  
Sushil Arun Samant ◽  
Deepangkar Sarkar ◽  
Pallavi Jha ◽  
Srinivas Krishnagopal
Keyword(s):  
Electron Beams ◽  
Laser Pulses ◽  
Low Energy ◽  
Energy Spread ◽  
Low Density ◽  
Low Intensity ◽  
Low Density Plasma ◽  
Intensity Laser ◽  
Density Plasma

scholarly journals Diagnostics of peak laser intensity based on the measurement of energy of electrons emitted from laser focal region

2015 ◽  
Vol 33 (3) ◽  
pp. 361-366 ◽  
Author(s):  
M. Kalashnikov ◽  
A. Andreev ◽  
K. Ivanov ◽  
A. Galkin ◽  
V. Korobkin ◽  
...  
Keyword(s):  
Laser Intensity ◽  
Laser Pulses ◽  
Maximum Energy ◽  
Beam Waist ◽  
Focal Region ◽  
Low Density ◽  
Particle In Cell ◽  
Peak Intensity ◽  
Low Density Plasma ◽  
Density Plasma

AbstractA new method to determine the peak intensity of focused relativistic laser pulses is experimentally justified. It is based on the measurement of spectra of electrons, accelerated in the beam waist. The detected electrons were emitted from the plasma, generated by nonlinear ionization of low-density gases (helium, argon, and krypton) in the focal area of a laser beam with the peak intensity >1020 W/cm2. The measurements revealed generation of particles with the maximum energy of a few MeV, observed at a small angle relative to the beam axis. The results are supported by numerical particle-in-cell simulations of a laser–low-density plasma interaction. The peak intensity in the focal region derived from experimental data reaches the value of 2.5 × 1020 W/cm2.

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