首页>
外文期刊>Journal of Applied Physics
>Coronary angiography using laser plasma sources: X-ray source efficiency and optimization of a bent crystal monochromator
【24h】
Coronary angiography using laser plasma sources: X-ray source efficiency and optimization of a bent crystal monochromator
A monochromator has been developed for coronary angiography, comprising a single bent crystal of silicon in Laue transmission geometry. K spectra of laser irradiated solid tin and tantalum (Z=50 and 73, respectively) targets were measured. The high resolution crystal spectrometer resolve the Sn and Ta Kα doublets, allowing in a proof-of-principle experiment the absolute Kα photon numbers emitted by the source to be determined. The Ta Kα yield is measured as a function of the laser pulse energy, allowing an assessment to be made of the suitability of such sources for medical applications.
展开▼
机译:已经开发出一种用于冠状动脉造影的单色器,由劳厄透射几何形状的单弯曲硅晶体组成。测量了激光照射固体锡和钽(Z=50和73)靶材的K光谱。高分辨率晶体光谱仪可解析 Sn 和 Ta Kα 双峰,从而在原理验证实验中确定源发射的绝对 Kα 光子数。Ta Kα 产率是作为激光脉冲能量的函数来测量的,从而可以评估此类光源是否适合医疗应用。
展开▼