| Article | |
| Report number | arXiv:1510.04505 |
| Title | Bright X-ray source from a laser-driven micro-plasma-waveguide |
| Author(s) | Yi, Longqing (Heinrich Heine U., Dusseldorf) ; Pukhov, Alexander (Heinrich Heine U., Dusseldorf) ; Thanh, Phuc Luu (Heinrich Heine U., Dusseldorf) ; Shen, Baifei (Shanghai, Inst. Optics, Fine Mech. ; CICIFS, Shanghai) |
| Publication | 2016 |
| Imprint | 15 Oct 2015 |
| Number of pages | 8 |
| Note | Comments: 5 pages, 4 figures |
| In: | Phys. Rev. Lett. 116 (2016) 115001 |
| DOI | 10.1103/PhysRevLett.116.115001 |
| Subject category | Other Fields of Physics ; 13: Novel Acceleration Techniques (ANAC2) ; 13.2: Achievement of high brightness electron beam with laser plasma accelerators |
| Abstract | Bright tunable x-ray sources have a number of applications in basic science, medicine and industry. The most powerful sources are synchrotrons, where relativistic electrons are circling in giant storage rings. In parallel, compact laser-plasma x-ray sources are being developed. Owing to the rapid progress in laser technology, very high-contrast femtosecond laser pulses of relativistic intensities become available. These pulses allow for interaction with micro-structured solid-density plasma without destroying the structure by parasitic pre-pulses. The high-contrast laser pulses as well as the manufacturing of materials at micro- and nano-scales open a new realm of possibilities for laser interaction with photonic materials at the relativistic intensities. Here we demonstrate, via numerical simulations, that when coupling with a readily available 1.8 Joule laser, a micro-plasma-waveguide (MPW) may serve as a novel compact x-ray source. Electrons are extracted from the walls by the laser field and form a dense self-organized helical bunch inside the channel. The electrons are efficiently accelerated along the channel axis while rotated around it by the optical waveguide modes in the MPW. This helical motion of relativistic electrons results in a bright, well-collimated emission of hard x-rays in the range of 1 100 keV. |
| Copyright/License | arXiv nonexclusive-distrib. 1.0 |
Record created 2015-10-16, last modified 2021-05-03