Question

What is the area of the tungsten target called where the high speed electrons strike the surface?

Answer 1

Actual focal spot-

Step-by-step explanation:

Actual focal spot-

it is referred to that spot of focal where beam of electron converge to one place.

focal sopt size for different process are

1) for mammography - 0.3 mm to 0.6 mm

2) for radiography - 1.00 to 1.2 mm

Focal length of focal spot can be calculated by using following relation

`focal\ length = actual\ focal\ length * sin\theta`

where
`\theta` is angle of anode