Superlattice Channeling Radiation as an Intense, Quasi- Monochromatic X-Ray Source

超晶格通道辐射作为强准单色 X 射线源

• 批准号: 9060218
• 负责人: Melvin Piestrup
• 金额: $ 5万
• 依托单位: Adelphi Technology, Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-01-01 至 1992-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9060218&HistoricalAwards=false
• 关键词: Superlattice; Channeling; Radiation; Intense; Quasi

Superlattice channeling radiation is being investigated as an intense, quasi-monochromatic X-ray source. A strained layer superlattice possesses bent planes which alternate direction with each layer of the superlattice crystal. A high energy charged particle which is channeled along a bent plane will follow the bends in the crystal and this oscillation will cause it to emit radiation. High energy (10-100 McV) electrons channeled along the bent planes of a strained layer superlattice emit X-ray radiation in a single peak of .10% full width half maximum (FWHM). This radiation is collimated into a narrow beam, more intense than standard channeling radiation and far more intense than the background radiation produced. The characteristics of superlattice channeling radiation make it a promising X-ray source for non-invasive digital subtraction angiography, which requires intense, tunable radiation peaks.

超晶格沟道辐射是一种 强烈的、准单色的X射线源。 应变层 超晶格具有弯曲的平面， 超晶格晶体的每一层。 一个高能量的 沿着弯曲平面引导的颗粒将沿着 晶体的弯曲，这种振荡会使它发射出 辐射 高能（10 - 100 McV）电子沿沿着引导 应变层超晶格的弯曲平面发射X射线， 在.10%半峰全宽的单峰中的辐射 （半高宽）。 这种辐射被准直成窄光束， 比标准的通道辐射还要强烈 产生的背景辐射。 的特点 超晶格沟道辐射使其成为一种很有前途X射线 用于无创数字减影血管造影术的源， 需要强烈的可调辐射峰值