Quasi-monoenergetic proton beams by laser-plasma X-rays

Plasma Physics by Laser and Applications 2013 Conference

Delle Side, D.^1 ; Krása, J.^2 ; Nassisi, V.^1 ; Velardi, L.^1

LEAS-Dipartimento di Matematica e Fisica Ennio de Giorgi, Universitá Del Salento, INFN Section of Lecce, Via per Arnesano s.n., 73100, Lecce, Italy^1

Institute of Physics, ASCR, V.v.i., Na Slovance 2, 182 21 Praha 8, Czech Republic^2

关键词: Accelerating voltages;    Applied voltages;    Buffer gas;    Laser plasma;    Low-energy;    Quasi-monoenergetic;    Soft X-ray;    Time of Flight methods;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/508/1/012003/pdf
DOI  :  10.1088/1742-6596/508/1/012003

来源: IOP

【 摘 要 】

We report the details of a technique for the production of proton beams with very low energy spread exploiting the short soft X-rays obtained by laser ablation. These beams have been generated by the dissociation and ionization of an hydrogen buffer gas induced by the laser-plasma X-rays and then accelerated by means of an electrostatic accelerator. Their properties have been analyzed through the time-of-flight method applying different accelerating voltages. The resulting energetic spread ranges between 6 and 11%, as a function of the applied voltage. Such a system could be extremely useful for producing quasi-monoenergetic proton beams.