Improving the dose distributions in minibeam radiation therapy: Helium ions vs protons.
Sign Up to like & getrecommendations! Published in 2019 at "Medical physics"
DOI: 10.1002/mp.13646
Abstract: PURPOSE Charged particle minibeam radiation therapy is a novel therapeutic strategy aiming at reducing the normal tissue complication probability by combining the normal tissue sparing of submillimetric, spatially fractionated beams with the improved dose deposition… read more here.
Keywords: helium ions; radiation therapy; minibeam; minibeam radiation ... See more keywords
Transmission electron microscopy and high-resolution electron microscopy studies of structural defects induced in Si single crystals implanted by helium ions at 600 °C
Sign Up to like & getrecommendations! Published in 2018 at "Applied Surface Science"
DOI: 10.1016/j.apsusc.2018.05.228
Abstract: Abstract The implantation-induced defects of crystalline silicon implanted with helium ions to a dose of 5 × 1016/cm2 at 600 °C were investigated. The sample was analyzed by transmission electron microscopy and high-resolution electron microscopy. Faceted cavities are… read more here.
Keywords: helium ions; microscopy; electron microscopy; implanted helium ... See more keywords
Large plastic deformation blistering and helium retention in 5% tantalum doped tungsten under 60 keV helium ions implantation
Sign Up to like & getrecommendations! Published in 2018 at "Fusion Engineering and Design"
DOI: 10.1016/j.fusengdes.2018.06.014
Abstract: Abstract Tantalum (5 mass-% Ta) doped tungsten and pure tungsten in comparison were exposed to 60 keV helium ions implantation with a fluence of 1.04 × 1022 ion m−2. It was obvious that the W-5%Ta featured large plastic blisters… read more here.
Keywords: ions implantation; helium ions; tantalum; kev helium ... See more keywords
Electronic interaction of slow hydrogen and helium ions with nickel-silicon systems
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review A"
DOI: 10.1103/physreva.100.032705
Abstract: Electronic stopping cross sections (SCS) of nickel, silicon and nickel-silicon alloys for protons and helium (He) ions are studied in the regime of medium and low energy ion scattering, i.e., for ion energies in the… read more here.
Keywords: helium ions; interaction slow; velocity; electronic interaction ... See more keywords
Disparate Energy Scaling of Trajectory-Dependent Electronic Excitations for Slow Protons and He Ions.
Sign Up to like & getrecommendations! Published in 2020 at "Physical review letters"
DOI: 10.1103/physrevlett.124.096601
Abstract: We have simultaneously measured angular distributions and electronic energy loss of helium ions and protons directly transmitted through self-supporting, single-crystalline silicon foils. We have compared the energy loss along channeled and random trajectories for incident… read more here.
Keywords: energy loss; helium ions; geometry; energy ... See more keywords
Complementary study of the internal porous silicon layers formed under high-dose implantation of helium ions
Sign Up to like & getrecommendations! Published in 2017 at "Crystallography Reports"
DOI: 10.1134/s106377451702016x
Abstract: The surface layers of Si(001) substrates subjected to plasma-immersion implantation of helium ions with an energy of 2–5 keV and a dose of 5 × 1017 cm–2 have been investigated using high-resolution X-ray reflectivity, Rutherford… read more here.
Keywords: complementary study; helium ions; layer; implantation helium ... See more keywords
Radiotherapy with Helium Ions Has the Potential to Improve Both Endocrine and Neurocognitive Outcome in Pediatric Patients with Ependymoma
Sign Up to like & getrecommendations! Published in 2022 at "Cancers"
DOI: 10.3390/cancers14235865
Abstract: Simple Summary Radiotherapy is a mainstay in the treatment of pediatric ependymoma. It requires precise dose application and optimal protection of organs at risk to minimize long-term sequelae. Compared to photon radiation treatment, proton therapy… read more here.
Keywords: therapy; helium ions; treatment; target coverage ... See more keywords