Question

The tube in a medical reserach X-ray unit uses nickel (Z = 29') as it's target

1. Use the Bohr model to estimate the minimum kinetic energy electrons must have to in order for Ka X-rays to just appear in the X-ray spectrum of the tube.

E(e) = 9914.4 eV -- correct

2. Assuming the electrons are accelerated from test through a voltage, V, what is the minimum voltage necessary to produce the Ka-rays?

V = 9914.4 V ---- correct

3. Assume the electrons are accelerated through the voltage calculated in part 2. What is the length of the Ka line?

I used (6.63 x 10^-34)(3.0 x 10^8)/(9914.4)(1.6 x 10^-19)

4. Now assume that the electrons are accelerated through twice the voltage calculated in part 2. What is the wavelength of the Ka line?

Answer 1