Purpose. Use in x-ray phase-contrast tomographs for early diagnosis of oncological, cardiovascular and neurological diseases.
Specifications.
- Period of grating templates, µm 4-100
- Template height, µm 1-40
- Type of H+ beam ions
- Beam energy, MeV 0.2-1.7
- Template size, µm2 2000×500.
Application area. Medicine.
Advantages. A feature of the proposed method is the ability to irradiate a resistive sample along the entire line simultaneously, in contrast to lithographic technologies, where axial optics and a beam in the form of a round spot are used, sequentially irradiating the line. This makes it possible to significantly reduce the irradiation time of the resistive sample and obtain grating templates in a few seconds.
Description. The physical principles of focusing a MeV proton beam into a line using a quadrupole probe-forming system of a nuclear scanning microprobe using proton-beam lithography are used.