上海充通大粤 SHANGHAI JIAO TONG UNIVERSITY Synchrotron Radiation Properties and production 王宇杰 上海交通大学物理与天文学院
Synchrotron Radiation Properties and Production 王宇杰 上海交通大学物理与天文学院
上海充通大粤 X-rays Were Discovered in 1895 SHANGHAI JIAO TONG UNIVERSITY X-rays were discovered (accidentally) in 1895 by Wilhelm Konrad Roentgen. Roentgen won the first Nobel Prize in 1901 "for the discovery with which his names is linked for all time:the... so-called Roentgen rays,as he himself called them,X-rays
X-rays Were Discovered in 1895 • X-rays were discovered (accidentally) in 1895 by Wilhelm Konrad Roentgen. 2 • Roentgen won the first Nobel Prize in 1901 “for the discovery with which his names is linked for all time: the... so-called Roentgen rays, as he himself called them, X-rays…
上海充通大兽 X-ray Sources SHANGHAI JIAO TONG UNIVERSITY water The standard X-ray tube(top right)was developed by Coolidge (at GE)around X-rays anode 1912. It is desirable to produce the maximum electrons intensity of x-rays;a Cu target tube might be able to deliver 2 kW.The limiting cathode factor is the heat that the target (anode) Filament can handle;cold water is used to remove heat. Higher power can be delivered by rotating anode dissipating the heat over a larger volume, water with a rotating anode (bottom right). in out However,this is not normally used for XRF. X-rays X-rays Power in watts current [amps]x electrons voltage [volts] cathode Filament
X-ray Sources The standard X-ray tube (top right) was developed by Coolidge (at GE) around 1912. It is desirable to produce the maximum intensity of x-rays; a Cu target tube might be able to deliver 2 kW. The limiting factor is the heat that the target (anode) can handle; cold water is used to remove heat. Higher power can be delivered by dissipating the heat over a larger volume, with a rotating anode (bottom right). However, this is not normally used for XRF. * Power in watts = current [amps] x voltage [volts]
上海充通大粤 X-ray Spectrum SHANGHAI JIAO TONG UNIVERSITY Ka 50 kV 40 kV (Kususu)3oT 30 kV Bremsstrahlung 20 kV Energy
X-ray Spectrum
上海充通大粤 Synchrotron Radiation-Some Background SHANGHAI JIAO TONG UNIVERSITY Excerpted from Handbook on Synchrotron Radiation, Volume 1a,Ernst-Eckhard Koch,Ed.,North Holland,1983
Synchrotron Radiation - Some Background Excerpted from Handbook on Synchrotron Radiation, Volume 1a, Ernst-Eckhard Koch, Ed., North Holland, 1983. 4