Главная
/
Физика
/
Task 4. Compare All Results. Task 3. The Wavelength of Primary Photons Is Equal to 0.05 Nm. 40000 Photons Passed Through a Region with

Вопрос

Task 4. Compare all results. Task 3. The wavelength of primary photons is equal to 0.05 nm. 40000 photons passed through a region with an area 5cm^2 in a time 3 minutes. Find the Particle Fluence Rate after this radiation passes through thickness 8mm of beryllium. I Find the minimum thickness of matter Platinum in which electrons with energy 3 MeV, 30 MeV, and 300 MeV will lose all their energy. For them 11:

Решения

4.7 (202 Голоса)
Богдан
Экспертная проверка
мастер · Репетитор 5 лет

Ответ

To solve the given problem, we need to calculate the particle fluence rate and the minimum thickness of matter for electrons with different energies.### Task 3: Particle Fluence RateGiven:- Wavelength of primary photons ( ) = 0.05 nm- Number of photons ( ) = 40000- Area ( ) = 5 cm²- Time ( ) = 3 minutes- Thickness of beryllium ( ) = 8 mmFirst, let's find the energy of each photon using the relationship between wavelength and energy: where is Planck's constant ( ) and is the speed of light ( ). Next, calculate the total energy of the photons: Now, calculate the fluence rate ( ), which is the total energy divided by the area and time: ### Task 4: Minimum Thickness of Matter for ElectronsTo find the minimum thickness of matter for electrons to lose all their energy, we use the concept of the range of electrons in a medium. The range is given by: where is the energy of the electron, is the mass attenuation coefficient of the material, and is the electron's charge ( ).For simplicity, let's assume the mass attenuation coefficient ( ) for beryllium is given or can be found from experimental data. For this example, let's assume .For each energy level:1. **3 MeV:** 2. **30 MeV:** 3. **300 MeV:**\[ R = \frac{300 \times 10^6 \, \text{eV} \times 1.602 \times 10^{-19} \, \text{J/eV}}{0