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    radiation therapy tagged posts

    Invention could make Particle Accelerators 10 times Smaller

    September 29, 2020, Categories  Physics

    Terahertz acclerator structure
    SLAC scientists have invented a copper accelerator structure that could make future X-ray lasers and accelerators for radiation therapy more compact. It feeds terahertz radiation into a tiny cavity to boost particles to tremendous energies. This image shows one half of the structure with the cavity in the circled area. Inset: Scanning electron microscope image of a section of the cavity, which is 3.5 millimeters long and 280 microns wide at its narrowest point. (Chris Pearson/Emilio Nanni/SLAC National Accelerator Laboratory)

    It uses terahertz radiation to power a miniscule copper accelerator structure...

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    Radiation that knocks electrons out of matter

    December 7, 2016, Categories  Physics, Technology/Electronics, Health/Medical, Biology/Biotechnology

    Scientists have elucidated a surprising novel mechanism of cascading electron emission caused by the Coulombic interaction between highly excited atoms.

    Scientists have elucidated a surprising novel mechanism of cascading electron emission caused by the Coulombic interaction between highly excited atoms.

    Tohoku University research could have implications for radiation therapy. Physical chemist Kiyoshi Ueda’s team used a free electron laser (FEL) at Japan’s SPring-8 Compact SASE Source test accelerator to investigate how electrons are ‘knocked out’ of neon atom clusters. Intense extreme ultraviolet FEL pulses were directed at the clusters and the resultant energy distribution of electrons knocked out of the clusters was measured using a ‘velocity map imaging spectrometer’.

    Electrons inside a material absorb energy when the material is exposed to light. Normally, this energy is used to ‘knock electrons out’ of the material...

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