1. ＴＨＥ ＰＨＹＳＩＣＳ ＯＦ ＲＡＤＩＯＬＯＧＹ
ＴＨＥ　ＰＨＹＳＩＣＳ　ＯＦ　ＲＡＤＩＯＬＯＧＹ
The Production and Properties of X Rays
Part One
BME College
Sherman sheen

2. X-Ray Tubes and Simplified Circuit
Q: How to produce X radiation?
Substance bombarded by high speed electrons
X-ray tube
Q: Structure of an X ray tube?
cathode, anode,
filament, focusing cup

3. X-Ray Tubes and Simplified Circuit
A big problem ?
----efficiency
----Nobel prize
Understand X-ray tube in a circuit
space charge effect
tube voltage increased
filament emission
saturation

4. X-Ray Tubes and Simplified Circuit

5. X-Ray Tubes and Simplified Circuit
Three important parameters
Tube current
Filament current
KV anode-cathode
A kind of special tubes
grid-controlled tubes
rapid switching and short exposure time

6. Self-rectified X ray circuit