Lighting up a nest for X-ray emission

Пегораро, Ф.

doi:10.1038/s41566-022-01146-0

Cited by 3 publications

(1 citation statement)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, progress has recently been slow and novel concepts would be highly appreciated [4,5]. Although X-ray sources with high brilliance are available, for example, Thomson scatter sources [6], synchrotron sources [7][8][9], laser plasma sources [10], and X-ray tubes based on liquid-metal jet anodes [11,12], alternative sources producing both the sufficient intensity and the total output required in medical CT do not exist.…”

Section: Introductionmentioning

confidence: 99%

Microparticle Hybrid Target Simulation for keV X-ray Sources

Behling,

Hulme,

Tolias

et al. 2024

Instruments

View full text Add to dashboard Cite

The spatiotemporal resolution of diagnostic X-ray images obtained with rotating-anode X-ray tubes has remained limited as the development of rigid, high-performance target materials has slowed down. However, novel imaging techniques using finer detector pixels and orthovolt cancer therapy employing narrow X-ray focal spots demand improved output from brilliant keV X-ray sources. Since its advent in 1929, rotating-anode technology has become the greatest bottleneck to improvement. To overcome this limitation, the current authors have devised a novel X-ray generation technology based on tungsten microparticle targets. The current study investigated a hybrid solution of a stream of fast tungsten microparticles and a rotating anode to both harvest the benefits of the improved performance of the new solution and to reuse known technology. The rotating anode captures energy that may pass a partially opaque microparticle stream and thereby contributes to X-ray generation. With reference to fast-rotating anodes and a highly appreciated small focal spot of a standardized size of 0.3 for an 8° target angle (physical: 0.45 mm × 4.67 mm), we calculated a potential output gain of at least 85% for non-melting microparticles and of 124% if melting is envisioned. Microparticle charging can be remediated by electron backscattering and electron field emission. The adoption of such a solution enables substantially improved image resolution.

show abstract

Section: Introductionmentioning

confidence: 99%

Microparticle Hybrid Target Simulation for keV X-ray Sources

Behling,

Hulme,

Tolias

et al. 2024

Instruments

View full text Add to dashboard Cite

show abstract

Carbon nanotubes as outstanding targets for laser-driven particle acceleration

2023

Nano Res.

View full text Add to dashboard Cite

A compact X-ray source via fast microparticle streams

Behling,

Hulme,

Poludniowski

et al. 2024

Commun Eng

View full text Add to dashboard Cite

The spatiotemporal resolution of diagnostic X-ray images is limited by the erosion and rupture of conventional stationary and rotating anodes of X-ray tubes from extreme density of input power and thermal cycling of the anode material. Conversely, detector technology has developed rapidly. Finer detector pixels demand improved output from brilliant keV-type X-ray sources with smaller X-ray focal spots than today and would be available to improve the efficacy of medical imaging. In addition, novel cancer therapy demands for greatly improved output from X-ray sources. However, since its advent in 1929, the technology of high-output compact X-ray tubes has relied upon focused electrons hitting a spinning rigid rotating anode; a technology that, despite of substantial investment in material technology, has become the primary bottleneck of further improvement. In the current study, an alternative target concept employing a stream of fast discrete metallic microparticles that intersect with the electron beam is explored by simulations that cover the most critical uncertainties. The concept is expected to have far-reaching impact in diagnostic imaging, radiation cancer therapy and non-destructive testing. We outline technical implementations that may become the basis of future X-ray source developments based on the suggested paradigm shift.

show abstract

Lighting up a nest for X-ray emission

Cited by 3 publications

References 11 publications

Microparticle Hybrid Target Simulation for keV X-ray Sources

Microparticle Hybrid Target Simulation for keV X-ray Sources

Carbon nanotubes as outstanding targets for laser-driven particle acceleration

A compact X-ray source via fast microparticle streams

Contact Info

Product

Resources

About