Question

What is the mean electron energy in MeV if the half value depth is 3.0?

Answer #1

The relation between the mean energy of the electrons and the half value depth is given by,

Where, is the mean energy and is the half value depth.

The value of the constant C depends on the medium.

For example, for water C=2.33 Mev/cm.

If =3.0 cm, then

=7 MeV

What is the speed of an electron whose kinetic energy is 1.80
MeV ?

An electron and an antielectron (positron) each have a rest
energy of 0.511 MeV , or approximately 8.2×10-14 J .
When an electron and a positron are both stationary and located
next to each other during an annihilation process, their mass
energy converts to electromagnetic energy released as photons,
electromagnetic particles that have momentum but no mass and that
travel at the speed of light. What is the minimum number of photons
that could be released, and how much energy...

In a head-on collision of an electron of kinetic energy of 2.044
MeV with a positron at rest, the two particles are replaced by two
photons of equal energy. If each photon is traveling at an angles θ
with respect to the electron’s direction of motion, What is the
energy E, momentum p (you can leave the answer in terms of c) and
angle of θ of each photon? (For electron and positron mc2 = 0.511
MeV)

In a Compton collision between a 10 MeV photon and an electron,
the energy of the photon scattered at a right angle is
approximately

A electron is accelerated to a kinetic energy of 100 MeV at the
end of a linac and then drifts 1.45 m to a target in the
laboratory
a) What is the distance from the end of the linac to the target
in the rest frame of the electron?
b) As measured in the laboratory, what is the velocity of the
electron and how much time does it take for the electron to hit the
target after it exits the...

A particle of rest mass energy 18 MeV decays from rest into an
electron.
(a) Assuming that all the lost mass is converted into the
electron’s kinetic energy, find ? for the electron.
(b) What is the electron’s velocity?
Please show all steps and equations used

An electron and a positron, each with a kinetic energy of 2.50
MeV, annihilate, creating two photons that travel away in opposite
directions.What is the frequency of each photon?

Determine the wavelength associated with an electron having
kinetic energy equal to 0.988 MeV. Electron mass is
me=9x10-31 kg, speed of light is
3x108 m/s, 1 eV= 1.6x10-19 J,
h=6.6x10-34 J.s, you must apply relativistic correction
for mass.

Calculate the binding energy (in MeV) of a deuterium nucleus
consisting of one proton and a neutron as the nuclear mass is
2.014102 unit.
The half- life of radium-226 is 1.6 × 103 If a
sample initially contains 3.0 × 1016 such nuclei, what
is the number of radium nuclei remaining after 4.8 × 103
years?

What is the Kinetic Energy of an electron traveling at 0.8c. Its
rest mass energy is 0.511 Mev. (b) What is the total energy? (c)
What is the momentum ? Mass = 9.11 x 10^-31

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