Novel target design for enhanced laser driven proton acceleration | Zendy

Malay Dalui | Zendy; M. Kundu | Zendy; Sheroy Tata | Zendy; Amit D. Lad | Zendy; J. Jha | Zendy; Krishanu Ray | Zendy; M. Krishnamurthy | Zendy

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Novel target design for enhanced laser driven proton acceleration

Author(s) -

Malay Dalui,

M. Kundu,

Sheroy Tata,

Amit D. Lad,

J. Jha,

Krishanu Ray,

M. Krishnamurthy

Publication year - 2017

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4993704

Subject(s) - acceleration , laser , proton , foil method , atomic physics , electron , materials science , pulse duration , optics , chemistry , physics , nuclear physics , composite material , classical mechanics

We demonstrate a simple method of preparing structured target for enhanced laser-driven proton acceleration under target-normal-sheath-acceleration scheme. A few layers of genetically modified, clinically grown micron sized E. Coli bacteria cell coated on a thin metal foil has resulted in an increase in the maximum proton energy by about 1.5 times and the total proton yield is enhanced by approximately 25 times compared to an unstructured reference foil at a laser intensity of 1019 W/cm2. Particle-in-cell simulations on the system shows that the structures on the target-foil facilitates anharmonic resonance, contributing to enhanced hot electron production which leads to stronger accelerating field. The effect is observed to grow as the number of structures is increased in the focal area of the laser pulse

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