Explain the exictance of modified and unmodified components in Compton effect
Explain the exictance of modified and unmodified components in Compton effect
Ritu Nimje , 6 Years ago
Grade 12th pass
Modern Physics> Explain the exictance of modified and unm...
1 Answers
Arun
Last Activity: 6 Years ago
Compton Effect :
When a beam of monochromatic X-ray, is scattered by a scattering material (like graphite), the
scattered radiation contains two components of X-rays. One of the components having the same
wavelength as that of the incident beam called as Primary or Unmodified component denoted by
λi or λ and the other component having a longer wavelength than that of the incident x-rays is
called as Secondary or Modified Component λf or λ’. This phenomenon of change in
wavelength due to scattering is known as Compton Effect. The change in the wavelength
(difference) ∆λ= λ’ - λ is called the Compton shift.
In Compton scattering , the scattered radiation consists of two component wavelengths namely the
modified and unmodified wavelength.
The Unmodified component (Wavelength) arises when photons are scattered by tightly bound
electrons . In this case , the whole atom of scattering substance is involved in the collision and hence
the value of mass of electron (m0 ) in the equationis to be replaced by the mass of the atom ( M). Since the mass of the atom is many times larger than
that of an electron , the Compton shift is negligible and correspondingly there is no change in
wavelength.
i.e.
Compton Effect :
When a beam of monochromatic X-ray, is scattered by a scattering material (like graphite), the
scattered radiation contains two components of X-rays. One of the components having the same
wavelength as that of the incident beam called as Primary or Unmodified component denoted by
λi or λ and the other component having a longer wavelength than that of the incident x-rays is
called as Secondary or Modified Component λf or λ’. This phenomenon of change in
wavelength due to scattering is known as Compton Effect. The change in the wavelength
(difference) ∆λ= λ’ - λ is called the Compton shift.
In Compton scattering , the scattered radiation consists of two component wavelengths namely the
modified and unmodified wavelength.
The Unmodified component (Wavelength) arises when photons are scattered by tightly bound
electrons . In this case , the whole atom of scattering substance is involved in the collision and hence
the value of mass of electron (m0 ) in the equation
∆λ = h (1-cos θ)
M c
As M>> m0
∆λ = λf - λi = 0
λf = λi i.e. Unmodified component
Hence the intensity of unmodified component is large. In case of higher atomic number elements
(Heavy elements), number of tightly bound electrons are more and hence Unmodified component is
stronger (intense) in Higher atomic number elements.
The modified wavelength arises due to the collision of X-ray photon with either free or loosely
bound electrons. For high energy photons , most of the atomic electrons appear free and hence
large fraction of incident X-rays undergoes a wavelength shift. Therefore in case of low atomic
number elements (Light elements) the modified component will be more intense.
When a beam of monochromatic X-ray, is scattered by a scattering material (like graphite), the
scattered radiation contains two components of X-rays. One of the components having the same
wavelength as that of the incident beam called as Primary or Unmodified component denoted by
λi or λ and the other component having a longer wavelength than that of the incident x-rays is
called as Secondary or Modified Component λf or λ’. This phenomenon of change in
wavelength due to scattering is known as Compton Effect. The change in the wavelength
(difference) ∆λ= λ’ - λ is called the Compton shift.
In Compton scattering , the scattered radiation consists of two component wavelengths namely the
modified and unmodified wavelength.
The Unmodified component (Wavelength) arises when photons are scattered by tightly bound
electrons . In this case , the whole atom of scattering substance is involved in the collision and hence
the value of mass of electron (m0 ) in the equationis to be replaced by the mass of the atom ( M). Since the mass of the atom is many times larger than
that of an electron , the Compton shift is negligible and correspondingly there is no change in
wavelength.
i.e.
Compton Effect :
When a beam of monochromatic X-ray, is scattered by a scattering material (like graphite), the
scattered radiation contains two components of X-rays. One of the components having the same
wavelength as that of the incident beam called as Primary or Unmodified component denoted by
λi or λ and the other component having a longer wavelength than that of the incident x-rays is
called as Secondary or Modified Component λf or λ’. This phenomenon of change in
wavelength due to scattering is known as Compton Effect. The change in the wavelength
(difference) ∆λ= λ’ - λ is called the Compton shift.
In Compton scattering , the scattered radiation consists of two component wavelengths namely the
modified and unmodified wavelength.
The Unmodified component (Wavelength) arises when photons are scattered by tightly bound
electrons . In this case , the whole atom of scattering substance is involved in the collision and hence
the value of mass of electron (m0 ) in the equation
∆λ = h (1-cos θ)
M c
As M>> m0
∆λ = λf - λi = 0
λf = λi i.e. Unmodified component
Hence the intensity of unmodified component is large. In case of higher atomic number elements
(Heavy elements), number of tightly bound electrons are more and hence Unmodified component is
stronger (intense) in Higher atomic number elements.
The modified wavelength arises due to the collision of X-ray photon with either free or loosely
bound electrons. For high energy photons , most of the atomic electrons appear free and hence
large fraction of incident X-rays undergoes a wavelength shift. Therefore in case of low atomic
number elements (Light elements) the modified component will be more intense.
Hope it helps
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