what is the wavelength of thermal neutrons? what
"type" of light would this correspond to (X-ray,...
what is the wavelength of thermal neutrons? what
"type" of light would this correspond to (X-ray, UV, VIS,
IR)?
hint: a thermal particle has an average kinetic energy of ekin=3/2
KT with KT= 25 meV. m(neutron) = 1.674x10^-27 kg.
Consider an X-ray beam of wavelength 0.1 nm and a gamma ray beam
of wavelength 0.00188 nm. if each is scattered by an angle of 90
degrees by a free electron, what is the compton shift in the
wavelength of the rays? in each case also determine the kinetic
energy transferred to the recoiling electron and how much of the
incident energy in the rays is lost.
A light ray of wavelength 589 nm is incident at an angle θ on
the top surface of a block of crown glass surrounded by air, as
shown in the figure below. (The index of refraction of crown glass
is 1.52.)
(a) Find the maximum value of θ for which the refracted ray will
undergo total internal reflection at the left vertical face of the
block.
°
(b) Repeat the calculation for the case in which the crown glass
block...
An photon with a wavelength in the X-ray region of 0.69 nm
undergoes Compton scattering by colliding with a free electron. 1)
Assume the photon just barely grases the electron, so that the
deflect angle, θ, can be considered zero.
1)What is the wavelength of the outgoing photon after the
collision? λ' =
2)What the energy of the outgoing photon? Eγ
=
3)Now assume the photon deflects off at a small angle of
49o. What is the wavelength of the...
An X-ray photon with a wavelength of 0.120 nm scatters from a
free electron at rest. The scattered photon moves at an angle of
105° relative to its incident direction. (a) Find the initial
momentum of the photon. kg·m/s (b) Find the final momentum of the
photon. kg·m/s
An X-ray photon with a wavelength of 0.979 nm strikes a surface.
The emitted electron has a kinetic energy of 984 eV.
What is the binding energy of the electron in kJ/mol? [Note that
KE = 12mv2 and 1 electron volt (eV) =
1.602×10−19J.]
An X-ray photon of wavelength 0.958 nm strikes a surface. The
emitted electron has a kinetic energy of 978 eV .
What is the binding energy of the electron in kJ mol−1?
[KE = 12mv2; 1 electron volt (eV) =
1.602×10−19J]
1. An x-ray photon of initial wavelength (λ 0) = 0.097 nm is
scattered off an electron (initially at rest). If the photon is
backscattered (scattering angle = 180°), what is the resulting
wavelength of the scattered photon? Give your answer in nm, but
enter only the numerical part in the box.
2. An x-ray photon of initial wavelength (λ 0) = 0.093 nm is
scattered off an electron (initially at rest). If the photon is
backscattered (scattering angle =...
a) Calculate the wavelength of x ray emitted when 35-keV
electron collies with on molybdenum target.
b) A single electron orbiting a hydrogen nucleus moves from
energy level E4 to E2.
Calculate the energy in joules of the photon emitted due to this
energy change.
c)As an electron orbits the nucleus, it can be thought of as a
standing wave. Calculate the frequency of the wave if the electron
is in the 4th energy level of hydrogen atom