A simulation for electron trapping and accelerationin parabolic density profile and ongoing experimental plan

Kim, J.U.; Kim, C.; Kim, H.; Hafz, N.; Lee, H.J.; Suk, Hyyong

doi:10.1109/pac.2003.1288696

Cited by 2 publications

(1 citation statement)

References 10 publications

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“…The suggested plasma density modulations include: gradually declining plasma density [6], very steep density transitions [4], and parabolic plasma density profiles [7]. While gradual density slopes and parabolic density profiles are relatively straightforward to produce experimentally, they do not provide the same level of control over the trapping process that sharp density transitions provide.…”

Section: Introductionmentioning

confidence: 99%

Creation of plasma density transitions short compared to the plasma skin depth

Thompson

Rosenzweig

Travish

2004

Review of Scientific Instruments

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A plasma based electron beam source apparatus is described which creates a plasma with two distinct density regions separated by a transition which is shorter than the plasma skin depth k −1 p of either region. This sharp density modulation is achieved by using a perforated stainless steel screen to filter half of a diffusing plasma column. A simple physical model predicts that the length of the plasma density transition will vary with the distance from the screen. For a weakly magnetized plasma, the transition length will be twice the distance, on a line normal to the screen plane, from the screen edge to the location where the transition is measured. The plasma column is generated using an argon discharge plasma source. It has a peak density of approximately 3.5 x 10 13 cm −3 and a FWHM width of 5 cm. The discharge source utilizes a 7.5 cm diameter LaB 6 disc cathode heated to 1300• C using a graphite heater.

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Section: Introductionmentioning

confidence: 99%

Creation of plasma density transitions short compared to the plasma skin depth

Thompson

Rosenzweig

Travish

2004

Review of Scientific Instruments

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show abstract

Laser wakefield bubble regime acceleration of electrons in a preformed non uniform plasma channel

Kumar

Tripathi

2012

Laser Part. Beams

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A model of bubble regime electron acceleration by an intense laser pulse in non uniform plasma channel is developed. The plasma electrons at the front of the pulse and slightly off the laser axis in the plasma channel, experience axial and radial ponderomotive and space charge forces, creating an electron evacuated non uniform ion bubble. The expelled electrons travel along the surface of the bubble and reach the stagnation point, forming an electron sphere of radius re. The electrons of this sphere are pulled into the ion bubble and are accelerated to high energies. The Lorentz boosted frame enabled us to calculate energy gain of a test electron inside the bubble.

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A simulation for electron trapping and accelerationin parabolic density profile and ongoing experimental plan

Cited by 2 publications

References 10 publications

Creation of plasma density transitions short compared to the plasma skin depth

Creation of plasma density transitions short compared to the plasma skin depth

Laser wakefield bubble regime acceleration of electrons in a preformed non uniform plasma channel

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